The links of all the interconnected pathways of energy and matter flowing through a community is called a food web.
Energy is the fuel that any living organism uses to carry out its life processes. All the body functions require energy to be accomplished. Most organisms uses energy in the form of ATP. This energy is formed inside the body by the breakdown of the ingested food.
Food web is the interconnection of all the food chains in the environment. A single organism can be the part of multiple food chains in an ecosystem. Hence there are no fixed trophic levels of any organism in a food web. A food chain is of linear direction, but a food web gas a zig-zag pattern.
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What did the microbiologist conclude? the hypothesis is supported because on average s. aureus was more susceptible to antibiotics than e. coli. the hypothesis is not supported because on average s. aureus was less susceptible to antibiotics than e. coli.
A microbiologist studies the microbes and the disease they cause. The bacterium that will be more responsive to antibiotic treatment will be Staphylococcus aureus.
What are antibiotics?Antibiotics are said to be the medication and drug class that works against bacterial infections. They are used to kill and slow the rate of growth or reproduction of microbes like bacteria to stop diseases or infections like flu, cold, cough, etc.
Antibiotic exposure can be used to evaluate whether the bacteria are susceptible or resistant to the drug. Staphylococcus aureus species are susceptible, thus the antibiotic therapy will prevent them from growing. Escherichia coli will grow because it is resistant, however.
Therefore, Staphylococcus aureus will become more responsive to antibiotics.
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Answer: A.
The hypothesis is supported because on average S. aureus was more susceptible to antibiotics than E. coli.
which of the following is an advantage of electron microscopy? choose one: a. specimens can be observed at high resolution. b. the microscope is inexpensive and easy to use. c. living specimens can be observed. d. motile specimens can be observed.
The microscope is inexpensive and easy to use is an advantage of electron microscopy. High resolution images of both biological and non-biological specimens can be obtained using the electron microscopy (EM) technique. In order to fully understand the structure of tissues, cells, organelles, and macromolecular complexes, it is employed in biomedical research.
There are various kinds of electron microscopes, such as the scanning electron microscope (SEM), the transmission electron microscope (TEM), and the reflection electron microscope (REM.). Magnification and better resolution are possible thanks to the utilization of electrons as opposed to light waves, allowing for the analysis of structures that would otherwise be invisible.
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What is the most prevalent form of an allele called?
a. neutral
b. normal
c. dominant
d. recessive
e. wild type
The most prevalent form of an allele called wild type.
So, the correct option is (e).
Natural allele refers to a type of gene that, when carried by an organism, has no effect on that organism's FITNESS to live and reproduce.An allele is one of two or more variations of a certain genomic location's DNA sequence. For each genomic region with such variation, an individual inherits two alleles, one from each parent. The person is homozygous for the allele if the two alleles are the same.A recessive allele is a form of genetic coding that, in the absence of a dominant allele, has no effect on phenotype.The wild type allele is the one that codes for the phenotype that predominates in a specific natural population.To learn more about allele.
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Now that the lab is complete, it is time to write your lab report. The purpose of this guide is to help you write a clear and concise report that summarizes the lab you have just completed.
The lab report is composed of two sections:
Section I: Overview of Investigation
o Provide background information.
o Summarize the procedure.
Section II: Observations and Conclusions
o Include any charts, tables, or drawings required by your teacher.
o Include answers to follow-up questions.
o Explain how the investigation could be improved.
To help you write your lab report, you will first answer the four questions listed below based on the lab that you have just completed. Then you will use the answers to these questions to write the lab report that you will turn in to your teacher.
You can upload your completed report with the upload tool in formats such as OpenOffice.org, Microsoft Word, or PDF. Alternatively, your teacher may ask you to turn in a paper copy of your report or use a web-based writing tool.
Questions
Section I: Overview of Lab
1. What is the purpose of the lab?
2. What procedure did you use to complete the lab?
Outline the steps of the procedure in full sentences.
Section II: Observations and Conclusions
3. What charts, tables, or drawings would clearly show what you have learned in this lab?
Each chart, table, or drawing should have the following items:
a. An appropriate title
b. Appropriate labels
4. If you could repeat the lab and make it better, what would you do differently and why?
There are always ways that labs can be improved. Now that you are a veteran of this lab and have experience with the procedure, offer some advice to the next scientist about what you suggest and why. Your answer should be at least two to three sentences in length.
Writing the Lab Report
Now you will use your answers from the four questions above to write your lab report. Follow the directions below.
Section I: Overview of Lab
Use your answers from questions 1 and 2 (above) as the basis for the first section of your lab report. This section provides your reader with background information about why you conducted this lab and how it was completed. It should be one to two paragraphs in length.
Section II: Observations and Conclusions
Use your answers from questions 3 and 4 (above) as the basis for the second section of your lab report. This section provides your reader with charts, tables, or drawings from the lab. You also need to incorporate your answers to the follow-up questions (from the Student Guide) in your conclusions.
Overall
When complete, the lab report should be read as a coherent whole. Make sure you connect different pieces with relevant transitions. Review for proper grammar, spelling, punctuation, formatting, and other conventions of organization and good writing.
I'll give someone brain if they answer right
The purpose of this lab is to investigate the effect of temperature on the activity of an enzyme, specifically catalase, which breaks down hydrogen peroxide into water and oxygen gas. The experiment aims to determine the optimum temperature range for catalase activity and to observe the effect of temperature beyond this range.
What procedure did you use to complete the lab?To complete this lab, we first prepared a solution of hydrogen peroxide and collected it in a gas syringe. We then added a small amount of catalase to the hydrogen peroxide solution and placed the syringe in a water bath at a specific temperature. The reaction between the enzyme and the substrate produced oxygen gas, which displaced the water in the syringe. We recorded the volume of oxygen gas produced at different temperatures to investigate the effect of temperature on enzyme activity. The temperature range we tested was from 10°C to 60°C, with increments of 10°C.
What charts, tables, or drawings would clearly show what you have learned in this lab?A line graph with temperature on the x-axis and volume of oxygen gas produced on the y-axis would clearly show the effect of temperature on enzyme activity. The graph should have the following items:
a. Title: Effect of Temperature on Catalase Activity
b. X-axis label: Temperature (°C)
c. Y-axis label: Volume of Oxygen Gas Produced (cm3)
If you could repeat the lab and make it better, what would you do differently and why?If I could repeat this lab, I would increase the number of temperature increments from 10°C to 5°C or even 2°C. This would provide more precise data and allow for a more accurate determination of the optimum temperature range for catalase activity. Additionally, I would use a more sensitive instrument for measuring the volume of oxygen gas produced, such as a gas burette or a digital gas sensor. This would reduce measurement errors and improve the reliability of the results.
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Regions of distinctly different physical areas that serve as boundaries between different communities are called?
The Regions of the distinctly different physical areas that has serve as the boundaries between the different communities are called as ecotone
An ecotone is the transition area between the two biological communities, where the two communities must meet and integrate. It may be the narrow or wide, and it may be the local ("the zone between a field and forest") or regional ("the transition between forest and grassland ecosystems").
The Ecotones are the areas of the steep transition between the ecological communities, the ecosystems, and/or ecological regions along with the environmental or other the gradient. Ecotones may occur at multiple spatial scales and the range from the natural ecotones between the ecosystems and biomes by the human-generated boundaries
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Living organism(s) composed of one or more cells with a distinct nucleus and cytoplasm are:________-
Living organism(s) composed of one or more cells with a distinct nucleus and cytoplasm are eukaryotes.
In the field of science, eukaryotes can be described as those kinds of organisms that have well-defined nucleus. On the other hand, prokaryotes are organisms that lack a membrane-bound nucleus.
A eukaryote can be single-celled or possess more than one cell. The genome of eukaryotes is present inside the nucleus of a cell. For prokaryotes, who lack a well-defined nucleus, the DNA is present inside the cytoplasm.
The eukaryotes have numerous kinds of organisms such as animals, plants, protists, etc.
The eukaryotes cell is properly organized with various organelles which play an active role in the maintenance of an organism. The cytoplasm is the fuid-like organelle in which all the other organelles of a cell float.
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Predict which type of fatty acid should offer the greatest benefit for membranes of plants and microbes in the coldest places on earth:________
The type of fatty acid that would offer the greatest benefit for membranes of plants and microbes in the coldest places on earth: Polyunsaturated fatty acid.
Fatty acids can be divided into three types saturated, monounsaturated and polyunsaturated fatty acids.
Polyunsaturated fatty acid are the fatty acids that have more than one unsaturated carbon bond or double bond in the molecule. The oil in the remains liquid at room temperature and starts solidifying only when chilled. It includes fats like omega-3 and omega-6.
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The nucleus, mitochondria, endoplasmic reticulum, and golgi complex are examples of what type of organelles?.
The nucleus, mitochondria, endoplasmic reticulum, and golgi complex are examples of membraneous organelles.
This means that they are organelles which are found in the in any eukaryotic cell. Other organelles found in eukaryotic cells include ribosomes, centrosome, centrioles, chloroplast, lysosomes and others
Cytoplasmic organellesThe protoplasm of all living organisms are made up of both nucleus and cytoplasm. All the organelles which are embedded in nucleus of bitg plants and animal cells are known as cytoplasmic organelles.
Organelles found in the cytoplasm include the following:
Mitochondria: This is referred to as the power house of a cell. Ribosomes: It is the site of protein synthesis Golgi complex or golgi apparatus or golgi bodyEndoplasmic reticulumLysosomes and othersSo therefore, the nucleus, mitochondria, endoplasmic reticulum, and golgi complex are examples of membraneous organelles
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The laetoli footprints demonstrate that the foot of australopithecus afarensis was humanlike in having:_________
a. a divergent big toe.
b. elongated toes.
c. a flat foot.
d. a rounded heel.
Option(a)a divergent big toe is the correct answer.
The laetoli footprints demonstrate that the foot of australopithecus afarensis was humanlike in having a divergent big toe.
What makes Australopithecus afarensis unique?One of the most well-known and longest-living early human species is Australopithecus afarensis; more than 300 of its remains have been found by paleoanthropologists.What caused the extinction of Australopithecus afarensis?During glacial maximum, droughts may have become more severe, which may have contributed to the strong australopithecines' extinction. Although Australopithecus africanus may have survived until the time of the formation of Homo, which occurred at around 2.4 Ma, there is evidence that it did so up to about 2.3 Ma (Delson, 1988).Do Australopithecus still exist?An extinct species of australopithecine known as Australopithecus afarensis flourished in the Pliocene of East Africa between 3.9 and 2.9 million years ago (mya). The first fossils were found in the 1930s, but significant fossil discoveries weren't made until the 1970s.
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Biology pls help with this
The conclusions that can be made is because of ringing the area of phloem is cut and the food is not translocated further hence the food gets collected on that area thus it gets swollen.
Girdling, also known as ring-barking, is the full removal of the bark from all around the perimeter of a branch or trunk of a woody plant. This bark is made up of cork cambium, sometimes known as "phellogen," phloem, cambium, and occasionally even xylem. In the ringing experiment, a complete ring of tissue is excised from a dicot plant at a specific height above the ground outside the vascular cylinder. Water can flow freely from roots to the aerial regions because the xylem is intact.
Phloem, or food-carrying tubes, transport food made from leaves to other sections of the plant. Food produced by the leaves will not be able to get to other sections of the plant if the food-carrying tubes are removed. Because of this, the food builds up near the cut, causing the stem to bulge.
Thus we can conclude that the outer bark of the woody plants consist of the phloem tissues which is responsible for the movement of food inside the plant.
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Approximately+________%+of+the+stored+energy+of+an+organism+at+one+level+of+a+food+web+is+transferred+to+the+tissues+of+the+organism+that+consumes+it+at+the+next+level+of+the+food+web.
On an average only about 10 percent of energy stored as biomass in a trophic level is passed from one level to the next.
What is food web and its importance?A food web consists of all the food chains in a single ecosystem. Each living thing in an ecosystem is a part multiple food chains. The importance of food webs is to describe feeding relationship among species in a community.
A food web is a graphical representation of what-eats-what in an ecological community that is formed by the natural interconnection of food chains. The food web is also known as a consumer-resource system.
On an average only about 10 percent of energy stored as biomass in a trophic level is passed from one level to the next.
Approximately 10% of the stored energy of an organism at one level of a food web is transferred to the tissue of the organism that consumes it at the next level of the food web.
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She notices that the muscle cells are loaded with mitochondria while the macrophages have abundant lysosomes. why is this so?
The muscle cells are loaded with mitochondria to allow large amounts of ATP production while the macrophages have abundant lysosomes to digest the debris and dead organisms like bacteria.
Mitochondria are known as the powerhouse of a cell. This is because most of the ATP production used by various systems in their operation is produced by mitochondria. A chemical called NADH is produced in the mitochondrial matrix through the Krebs cycle. The enzymes embedded in the mitochondrial membrane use this chemical to produce Adenosine Triphosphate, generally known as ATP.
Macrophages are phagocytic white blood cells involved in engulfing and killing pathogens. They are involved in the innate immune response of the body. Lysosomes have specialized enzymes that can kill these pathogens.
Muscle cells need to contract or expand for which they require energy. Thus, they have abundant mitochondria. Whereas, the macrophages have abundant lysosomes to help them kill disease-causing pathogens like a virus or bacteria.
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Diffusion vs Osmosis in a ven digram
Answer: Venn Diagram
Explanation: Picture -
Answer:
Here it is, the Venn diagram you asked for lara!
- Kit-Kat <3
To the cytoplasm of a cell and is involved in many cellular activities
Answer:
like the building of proteins
Explanation:
Flashcards.
Which organelle plays a role in intracellular digestion? lysosome chloroplast ribosome golgi apparatus plasmodesma
Lysosome organelle plays a role in intracellular digestion.
What is intracellular digestion?To function, all living things need energy. Cells must not only take molecules from their surroundings but also disassemble them in order to get energy from their external environment. Internal digestion is the term for this process.
Intracellular digestion refers to the process of food digestion that occurs directly inside the cells. Species with only one cell, such as amoebas, experience it.
When food is digested intracellularly, food components are broken down into smaller molecules inside of the cell's food vacuoles. When food is broken down into small molecules through extracellular digestion, it happens outside of the cell, either on decomposing organic matter or in the alimentary canal lumen.
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Which of these combinations would be found in a nucleotide? adenine-thymine-uracil base-acid-salt sugar-protein-fat dna-rna-nucleus base-sugar-phosphate
The combinations found in a nucleotide would be C. - "base-sugar-phosphate"
What is a nucleotide?
Nucleotides are organic compounds made up of a phosphate and a nucleoside. They function as monomeric units of the key macromolecules found in all living forms on Earth, deoxyribonucleic acid (DNA), and ribonucleic acid (RNA), which are both nucleic acid polymers. In addition to being produced by the liver from common nutrients, nucleotides can also be received through diet.
The components of a nucleotide are a sugar molecule (either ribose in RNA or deoxyribose in DNA), a phosphate group, and a base that contains nitrogen. Adenine (A), cytosine (C), guanine (G), and thymine are the bases that are employed in DNA (T).
Question:
Which of these combinations would be found in a nucleotide?
(a) base-acid-salt
(b) adenine-thymine-uracil
(c) base-sugar-phosphate
(d) DNA-RNA-nucleus
(e) sugar-protein-fat
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To avoid osmotic shock, the obligate halophile halobacterium salinarum maintains a high intracellular concentration of which chemical?
The obligate halophile halobacterium salinarum maintains a high intracellular concentration of this substance to prevent osmotic shock?
What is osmotic pressure?
Its common way to express the concentration of a solution. Its the pressure that would need to be applied to a pure solvent to keep it from osmosing into the solution through a semipermeable membrane.
The obligate halophile halobacterium salinarum maintains a high intracellular concentration of potassium(K) in order to avoid osmotic shock.
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Dna testing is expensive and takes a lot of time. because of this fact, it is important that _____.
DNA testing is expensive and takes a lot of time. because of this fact, it is important that there is sufficient material from both the suspect. The two DNA strands are referred to as polynucleotides because they are composed of simpler monomeric units called nucleotides.
Each nucleotide is made up of one of four nitrogen-containing nucleobases (cytosine [C], guanine [G], adenine [A], or thymine [T]), deoxyribose, and a phosphttps hate group. Covalent bonds (known as the polynucleotides linkage) are formed between the sugar of one nucleotide and the phosphate of the next, resulting in an alternating sugar-phosphate backbone. To form double-stranded DNA.
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You suspect that changes in the hormone levels of a bird are causing it to sing more frequently. this is an example of a(n)?
You suspect that changes in the hormone levels of a bird are causing it to sing more frequently. this is an example of a(n):
proximate hypothesis
What is a proximate hypothesis?
An event that is nearest to, or directly accountable for, creating some observed effect is referred to as a proximate cause. This contrasts with a higher-level ultimate cause (also known as a distal cause), which is typically regarded as the "real" cause of an event.
Ex: What caused the ship to sink? A breach beneath the waterline allowed water to enter the hull, making the ship denser than the water that was supporting it, which prevented it from remaining afloat. The ship's collision with a rock, which tore a hole in its hull, was the ultimate reason.
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How is modern Earth different from Earth over four billion years ago?
O Constantly bombarded with comets and asteroids
O Little to no oxygen
O High levels of ultraviolet radiation
O Protective atmosphere
Modern earth has more protective atmosphere.
The growth of Earth's atmosphere over geologic time, or atmospheric evolution. Although the method by which the present atmosphere evolved from past conditions is complex, there is a wealth of indirect evidence for this evolution. The atmospheric composition has changed in the past as a result of chemical reactions with the Earth's crust and, in particular, with biological processes related to life, according to ancient sediments and rocks.The initial atmosphere of Earth was deficient in free oxygen but abundant in methane, ammonia, water vapor, and the noble gas neon. The first biological generation of oxygen by unicellular organisms and its eventual accumulation in the atmosphere most likely occurred hundreds of millions of years apart.Therefore, option D. is correct.
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What disease is a major problem in sub-saharan africa, causing death and leaving many children orphaned?
Among the main causes of disease burden in Sub-Saharan Africa have historically been communicable illnesses including malaria, TB, and HIV.
A transmittable/communicable disease is one that can be transferred from one person to another via a variety of routes, such as contact with blood or body fluids, inhaling an airborne virus, or being bitten by an insect. Sub-Saharan Africa accounted for about 80% of the 3 million HIV/AIDS-related fatalities worldwide by the end of 2002, drastically reducing life span and leaving millions of orphans in its wake. There were seven nations where the prevalence of HIV was higher than 20%.
Making sure our food and water are safe, avoiding ill people, and using safe sex techniques are all significant methods to reduce or stop the spread of communicable disease.
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Explain in your own words how volume is measured.
Answer: Volume is measured by length x width x height.
Explanation: how that helps.
A certain biological molecule has the ability to absorb hydrogen ions. predict and justify what will happen to the ph if this molecule is added to a beaker of water.
In the body, excess hydrogen ions can be absorbed by chemical buffers, which prevent pH changes.
For instance, excess carboxylic acid may be produced by muscle cells during exercise, which raises hydrogen ions. The H2 molecule is chemically fairly inert and only exhibits mild van der Waals type interactions with a solid surface because of strong covalent intermolecular connections.
Therefore, it is generally acknowledged that molecules are physically adsorbed. However, the hydrogen molecule's chemical interaction with the surface atoms is also taken into account.
How do chemical buffers work?A extremely stable pH solution is referred to as a buffer. A buffered solution's pH won't appreciably alter if an acid or basic is added to it.
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A certain biological molecule has the ability to absorb Hydrogen ions. Predict and justify (CER) what is going to happen to the pH if this molecule is added to a beaker of water.--
If the molecule was added to a beaker of water, the PH level of the water would increase, making the answer more basic.
What is pH simple definition?
pH may be a measure of how acidic/basic water is. The range goes from 0 to 14, with 7 being neutral. pHs of but 7 indicate acidity, whereas a pH of greater than 7 indicates a base. pH is basically a measure of the relative amount of free hydrogen and hydroxyl ions in the water.
Why is pH important to the human body?
In humans, pH balance plays a task in keeping the body functioning optimally. the perfect pH of the body is slightly alkaline, which facilitates certain biochemical reactions like oxygenating the blood. The body has numerous corrective measures to stay pH in homeostasis (a stable state)
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Lipophobic molecules that are to be released by cells are stored in membrane-bound structures called:________
secretory vesicles
Lipophobic molecules that are to be released by cells are stored in membrane-bound structures called secretory vesicles.
What is a secretory vesicle?The secretory vesicle is a type of vesicle that facilitates the delivery of cargo, such as hormones or neurotransmitters, from an organelle to particular locations on the cell membrane, where it docks and fuses to release its contents.What roles does the secretory vesicle play?Along with transport, secretory vesicles have the ability to store and breakdown some released compounds. Neurotransmitters are found in synaptic vesicles. Through secretory vesicles, hormones can be delivered into the bloodstream.Secretory vesicles are produced where?In response to extracellular signals, secretory vesicles that originate from the trans Golgi network exocytose their contents to the cell's exterior. A protein or a tiny molecule, like histamine, can be the released product (such as a hormone or digestive enzyme).
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There are more than 6,000 marine-protected areas (mpas) worldwide accounting for approximately ______ percent of the world's surface ocean.
Only 4.8 percent of the global ocean is protected by MPAs, with 2 percent of that total designated as highly or fully protected areas.
What is a Marine Protected Area?An instrument of spatially based management and conservation intended to lessen human impact on populations, communities, and habitats, typically with a fishing-related focus.
In reefal environments, typical bioturbators include crustaceans, annelid worms (polychaetes, oligochaetes, etc.), gastropods, bivalves, holothurians, fish, and numerous other infaunal and epifaunal organisms that feed on, burrow into, and rework sediment particles in the uppermost sediment layers.
The ability of MPAs to safeguard marine ecosystems and other marine resources is constrained, despite their advantages. The percentage of oceans that are protected globally is only about 1%.
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The surface of the nucleus is bounded by two phospholipid bilayer membranes, collectively called the.
The surface of the nucleus is bounded by two phospholipid bilayer membranes collectively called the nuclear envelope.
Where is the phospholipid bilayer located in the cell membrane?The fundamental structure of the membrane is the phospholipid bilayer ,which forms a stable barrier , between two aqueous compartment. In the case of the plasma membrane ,these compartment are the inside and the outside of the cell.
The boundary of the nucleus is called nuclear envelope . It consists of two phospholipid bilayers an outer membrane and inner membrane .
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Drinking water treatment includes removal of all dissolved chemicals. true false
Answer:
true
Explanation:
because it cleans you inside
A multicellular, photosynthetic, eukaryote that is typically adapted to life on land is a(n):________
A multicellular, photosynthetic, eukaryote that is typically adapted to life on land is a green plant.
What are plants?Plants are organisms that is not an animal, especially an organism capable of photosynthesis.
They are multicellular eukaryotes that includes chloroplasts in their cells, and have a cell wall.
Plants are regarded to be autotrophic in nutrition because they can synthesize their own food through the process of photosynthesis that takes place in their chloroplasts.
This suggests that a multicellular, photosynthetic, eukaryote that is typically adapted to life on land is a green plant.
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Other joints consist of bone ends held together by hyaline cartilage or fibrocartilage. these are classified as ____________ joints, which are amphiarthrotic or ____________ joints.
Other joints consist of bone ends held together by hyaline cartilage or fibrocartilage. These are classified as cartilaginous joints, which are amphiarthrotic or slightly movable joints.
A cartilaginous joint is formed when two bones are joined together by cartilage, a rigid but somewhat flexible form of connective tissue. These joints do not have a cavity and are made up of bones connected around each other by either fibrocartilage or hyaline cartilage.
Amphiarthroses are slightly movable joints. Amphiarthrosis is the singular form. The bones in this joint are held together by fibrocartilage or hyaline cartilage. The costal cartilages that connect the ribs to the sternum are slightly movable joints attached by hyaline cartilage.
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How do lipid soluble hormones, such as steroid hormones, cross the cell membrane?
Lipid-derived (soluble) hormones can enter cells by passing through the plasma membrane, binding to DNA, and controlling gene transcription. They can also alter cellular activity by triggering the creation of proteins that have an overall impact on the cell's long-term structure and function.
How can steroid hormones get inside of the cell?The only known method through which steroid hormones may reach cells is by free diffusion through the plasma membrane. Recent research, however, raises the possibility that carrier-bound steroids have cellular absorption mechanisms.
Once at the target tissue, steroid hormones are liberated from the binding protein and since they are lipophilic, they may readily diffuse through the plasma membrane to enter cells. Only free, unbound steroid is physiologically active, thus once at the target tissue. Steroid hormones exist within the cell.
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