Answer:
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Explanation:
Many foods, for example, bacon and salt cod, are preserved with high concentrations of salt applied to the outside of the meat. how can high concentrations of salt inhibit the growth of bacteria?
High concentrations of salt can inhibit the growth of bacteria by causing the bacteria to shrink because water leaves the bacterial cell.
What is a Hypertonic solution?This is defined as a type of solution which has a large amount of particles which are dissolved thereby making it have a high concentration.
High concentrations of salt applied to the outside of the meat means it is hypertonic and therefore causes the bacteria to shrink because water molecule leaves the cells thereby destroying their structure preventing metabolic reactions from occurring which leads to their death.
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Produced in the nucleus, this molecule specifies the exact sequence of amino acids of the protein to be made. group of answer choices
a. synthetase enzymes
b. transfer rna
c. ribosomal rna
d. messenger rna
e. atp
The exact sequence of amino acids of the protein to be made messenger RNA option (d) is correct.
What is an amino acid?Proteins are made of substances named amino acids. Antibodies and amino acid sequences are the elements of living.
The messenger RNA functions as a copy of chromosomal DNA and dictates the sequence of amino acids in proteins.
Produced in the nucleus, this molecule specifies the exact sequence of amino acids.
Thus, the exact sequence of amino acids of the protein to be made messenger RNA option (d) is correct.
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what is RNA stand for
A prominent part of the reward pathway of the brain is the _______, located at the base of the frontal lobe.
a) locus coeruleus
b) suprachiasmatic nucleus
c) nucleus accumbens
d) reticular formation
A prominent part of the reward pathway of the brain is the a) locus coeruleus located at the base of the frontal lobe.
What causes the brain's reward centre to become active?Dopamine is a neurotransmitter that facilitates communication across the brain areas that make up the "reward system." To assess rewards and encourage humans to pursue them, dopamine-producing neurons in the ventral tegmental area (VTA) connect with neurons in the nucleus accumbens.
The hypothalamus plays a crucial role in balancing a person's desire for rewards with their physiological status. This area combines brain activity with the organism's physiological requirements.
According to studies, the most widely used substances in human misuse (such as cocaine, alcohol, nicotine, amphetamines, and opiates) trigger a neurochemical reaction that greatly raises the quantity of dopamine produced by neurons in the reward area of the brain.
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If you made a change in the promoter sequence in the dna, what would happen at the rna level?.
If you made a change in the promoter sequence in the DNA, the RNA would not be made.
Transcription can be defined as a process through which mRNA transcripts are made from the DNA. These mRNA transcripts form the proteins by translation.
For the transcription to start, an RNA polymerase recognizes and binds to a specific site known as the promoter sequence for a particular DNA segment. Other than the RNA polymerase, transcription factors that are necessary for transcription also recognize and bind to this site.
If a change in the promoter sequence is made, then the RNA polymerase will not be able to recognize and bind the promoter sequence. As a result, transcription will not initiate. Hence, no mRNA will be formed.
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True or false? an arteriogram is a procedure that uses contrast material to study the flow of blood in large arteries and to identify areas of narrowing or obstruction.
It is true that an arteriogram is a procedure that uses contrast material to study the flow of blood in large arteries and to identify areas of narrowing or obstruction.
Arteriogram is also known as angiogram. It uses X-rays and dyes to view the inside if the arteries. The dye in inserted into an artery in the leg and its path is tracked down to view the status of the arteries. The insertion is done through a very thin tube.
Blood is the red-colored fluid present inside the body of an organism. It consists of plasma, red blood cells, white blood cells and platelets. The red color of the blood is due to pigment called hemoglobin.
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When a peptide bond is formed between two amino acids, one is attached to the trna occupying the p site and the other _______.
Is joined to the tRna taking up space at site A.
When a peptide bond is formed between two amino acids, one is attached to the tRna occupying the p site and the other is joined to the tRna taking up space at site A.
A dehydration synthesis or reaction takes place at the molecular level to create a peptide bond. This process, which is often referred to as a condensation reaction, typically takes place between amino acids. Two amino acids join together to form a peptide bond through a process called dehydration synthesis.What holds two amino acids together?Each amino acid is joined to another amino acid via a covalent connection, sometimes referred to as a peptide bond. As two amino acids are covalently connected by a peptide bond, the carboxyl group of one amino acid and the amino group of the incoming amino acid interact and release a molecule of water.To learn more peptide bond visit:
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Darwin called the units of inheritance that pass traits from parents to offspring.
Darwin called the units of inheritance that pass traits from parents to offspring gemmules.
Charles Darwin proposed the pangenesis theory to describe the units of inheritance between parents and offspring. The minute particles of inheritance that are derived from parent cells were referred to as gemmules. His theory suggested that these gemmules can be modified in any part of the body and are transferred into the reproductive organs of the parents. The gemmules then are transferred to the offspring.
As of now, Charles Darwin's theory is replaced by the chromosomal theory of inheritance, and the concept of gemmules is replaced by that of genes. A theory of inheritance of acquired characteristics (IAC) was further considered by Darwin from which he explained the concept of gemmules.
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What is the main fuel source for the work of the cell?
glucose
deoxyribose sugar
oxygen
adenosine triphosphate
Answer:
Glucose
Explanation:
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Egg is composed of the shell, egg white and egg yolk
yr own word please
Agree or disagree explain why
In his cross, what did mendel do?
a) he did not use pure-breeding plants in his crosses.
b) he used plants that were heterozygous in his initial crosses.
c) he studied traits controlled by a single gene.
In his cross, Mendel studied traits that are typically controlled by a single gene. Thus, the correct option for this question is C.
Who is Mendel?John Gregor Mendel is known as the father of genetics. He performed his experiments on pea plants. But initially, he tried his experiments on honey bees, mice, and hawkweed.
Later, he selected 34 varieties of pea plants and works for 2 years, and then he selected one out of 34 i.e. Pisum sativum. The most important concept of his experiments is that he only studied traits controlled by a single gene. For example, seed color, seed coat, flower color, stem length, etc. The genes of these are located on differents sets of chromosomes.
Therefore, in his cross, Mendel studied traits that are typically controlled by a single gene. Thus, the correct option for this question is C.
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The growing area of genetics and gene therapy may allow psychologists to focus on ______ of psychological disorders rather than on ______ only.
The growing area of genetics and gene therapy may allow psychologists to focus on prevention of psychological disorders rather than on treatment only.
What is gene therapy?Utilizing a gene or genes to treat, prevent, or cure a disease or medical condition is known as gene therapy. Gene therapy frequently involves replacing a damaged gene in a patient's cells with a healthy copy of that gene or inserting new copies of a damaged gene. Ex vivo, in vivo, and in situ gene therapy are the three main subtypes. Ex vivo gene therapy involves removing the patient's affected cells and modifying them genetically, either by introducing the therapeutic gene or through other means, to rectify the disease's phenotype. Gene therapy aims to address genetically based disorders (the source).Learn more about the Gene therapy with the help of the given link:
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A client with a diagnosis of anemia is receiving packed red blood cells. which nursing action is important when administering the transfusion?
The nursing action that is important when administering the transfusion is Monitoring the client's response, particularly within the first 10 minutes.
What is anemia?Anemia is defined as the absence of functional red blood cells in the blood or its drastic reduction following an on going deficiency.
Blood transfusion is the procedure that involves the transfer of blood or blood products from a screened donor to its recipient.
Transfusion reactions are those side effects that a recipient experiences few minutes into transfusion of blood.
Therefore, the nursing action that is important when administering the transfusion is Monitoring the client's response, particularly within the first 10 minutes.
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8. Consider some of the widespread global issues that we face here on Earth and
briefly describe them. Then, choose one of the space research technologies
discussed in the unit OR that you find online through some brief research (but
may not be one discussed in the video) and explore how it could help us
research, learn more about, or address this particular issue (similar to how
Wood did in the video) in one to three paragraphs.
One of the widespread global issues that we face here on earth is that of Environmental Pollution. Environmental pollutants have a wide range of negative health effects beginning in infancy.
Some of the most serious are
perinatal disorders, infant mortality, respiratory disorders, allergy, malignancies, cardiovascular disorders, increased oxidative stress, endothelial dysfunction, mental disorders,and a variety of other conditions.What technologies can help to address this issue?Using a more specific example, the impact of air pollution on the environment, the economy, and people's health in impacted nations cannot be overstated.
Environmental drones (E-drones) are used in this way to autonomously monitor the air quality in a specified place. Every hour, the E-drone flies at a specified height (altitude), monitors air pollutants there, applies onboard pollution control solutions for pollutants beyond the prescribed threshold, and then returns to Earth.
The benefits of this system include:
the capacity to assess CO2, CO, NH3, SO2, PM, O3, and NO3 concentrations in the air, identify when they are too high, and deploy onboard pollution remedies if necessary.This device is unique in that it not only detects excessive pollution but also automatically directs and decreases the carbon emissions detected above the ground.
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Functional groups help define the properties of macromolecules. the _____ functional group(s) is/are found within amino acids, while carbohydrates contain the _____ functional group(s).
Functional groups help define the properties of macromolecules. the amino and carboxyl functional group(s) is/are found within amino acids, while carbohydrates contain the hydroxyl functional group(s).
Because it is made up of two functional groups—a carboxyl group and a hydroxyl group attached to a carbonyl group—the carboxyl functional group that distinguishes carboxylic acids is uncommon. It is frequently written as -CO2H or -COOH in condensed form.A functional group with the chemical formula -OH and consisting of one oxygen atom covalently linked to one hydrogen atom is known as a hydroxy or hydroxyl group. Alcohols and carboxylic acids both include one or more hydroxy groups in organic chemistry.A macromolecule, such as a protein or nucleic acid, is a very big molecule crucial to biophysical processes. It is made up of many atoms that are covalently bound.To learn more about Functional groups.
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For soap molecules to remove and dissolve oil in water, what molecular features are needed?
Soap needs to possess two distinct characteristics in order to remove dissolved oil from water. It must have a charged and/or positive end at a non-polar end, I'm sorry. Each pin-shaped molecule that makes up soap has a hydrophilic head that easily forms bonds with water and a hydrophobic tail that avoids water and favors forming bonds with fats and oils.
Because it draws water, the sodium or potassium end of the chain is hydrophilic. Soap's cleansing abilities come from its distinctive structure. When your hands are unclean, it's typically because oils have drawn dirt particles to them, making them stick to your hands.
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In their resting state, all body cells exhibit a resting membrane potential; therefore, all cells are polarized. True or false?.
The given statement "In their resting state, all body cells exhibit a resting membrane potential; therefore, all cells are polarized." is True.
What is resting membrane potential?The ground value for trans-membrane voltage, which is a relatively static membrane potential. As opposed to the specific dynamic electrochemical processes known as action potential and graded membrane potential, quiescent cells' relatively static membrane potential is referred to as the resting membrane potential (or resting voltage). The different membrane permeabilities for potassium, sodium, calcium, and chloride ions, which in turn result from the functional activity of numerous ion channels, ion transporters, and exchangers, are what cause the resting potential to exist. According to conventional definitions, the transmembrane voltage during resting membrane potential in animal and plant cells is a relatively steady, ground value.Learn more about the resting membrane potential with the help of the given link:
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What does shading of a molecule indicate about the density of electrons around oxygen atom as compared to the density of electrons around a hydrogen atoms
Hydrogen is less dense than oxygen. The electron density of every atom depends on the quantity of electrons present, despite the fact that pictures of the electron densities of each atom were not displayed.
Since hydrogen only has one electron and oxygen has eight, this makes sense. If the relative electron densities are used to determine an atom's density, then oxygen with eight electrons is denser than hydrogen with one electron.
Why do hydrogen bonds in water seem stronger?Due to the higher electron density on oxygen in the water molecule that contributes the hydrogen atom to the HB, the hydrogen bond is more likely to form. The hydrogen-accepting water molecule has a lower electron density on hydrogen atoms, which is advantageous for additional hydrogen atom donations[16].
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Hydrogen is a smaller amount dense than oxygen. The electron density of each atom depends on the quantity of electrons present, despite the very fact that pictures of the electron densities of each atom were not displayed.
Reason:
Since hydrogen only has one electron and oxygen has eight, this is sensible . If the relative electron densities are wont to determine an atom's density, then oxygen with eight electrons is denser than hydrogen with one electron.
Why is electron density important?
The electron density is vital to the bonding and geometry of a molecule because the forces holding the nuclei together in a molecule are the attractive forces between the electrons and the nuclei. These attractive forces are opposed by the repulsions between the electrons and therefore the repulsions between the nuclei.
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During osmosis, water diffuses across a selectively permeable membrane from the region of higher.
Answer:
During osmosis, water diffuses across a selectively permeable membrane from the region of higher free water concentration and lower solute concentration to the side with lower free water concentration and higher solute concentration.
Explanation:
The muscular layer of the uterus that is the functional unit in pregnancy and labor is the:_____.
The muscular layer of the uterus that is the functional unit in pregnancy and labor is the Myometrium.
What are the three layers of uterus?The uterus is situated posterior to the rectum and anterior to the urine bladder. The body, cervix, and fundus are the three sections that make up the uterus.There are three tissue layers in the uterus, and they are as follows:The inner lining, or endometrium, is made up of the functional (superficial) and basal endometrium. Hormones related to reproduction affect the functional layer. Menstrual bleeding happens as a result of this layer shedding. The development of adhesions and fibrosis may follow injury to the basal endometrium (Asherman syndrome).The muscular layer, or myometrium, is made up of smooth muscle cells.The thin, epithelial-cell-based outer layer is known as the serosa or perimetrium.Learn more about the Parts of uterus with the help of the given link:
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The two main divisions of the nervous system are the ____ and the ____. group of answer choices
The two main divisions of the nervous system are the central nervous system and the peripheral nervous system.
The nervous system of higher vertebrates as well as humans consists of two major divisions:-
The central nervous system (CNS)The peripheral nervous system (PNS)The central nervous system comprises of the brain as well as the spinal cord. The peripheral nervous system consists of all the nerves of the body that are linked with the brain as well as the spinal cord, i.e. the CNS.
The central nervous system is associated with functions such as information processing as well as control. The peripheral nervous system is responsible for the transmission of information from the CNS to various parts of the body and forms a connection between them.
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The barrier between the intracellular and extracellular fluid compartments in an animal or plant is the:________
The barrier between the intracellular and extracellular fluid compartments in an animal or plant is the plasma membrane.
The plasma membrane or cell membrane is a double membraned cell organelle that surrounds and protects the cell and other cell organelles. Both prokaryotic and eukaryotic cells have a cell membrane.
The plasma membrane is about 5 - 8 nm in thickness and is composed of proteins, lipids and carbohydrates that come together to form a flexible bilayer. This lipid bilayer gives the cell membrane its ability to separate intracellular and extracellular fluids.
The plasma membrane also plays a role in signalling and communication between cells and anchors the cytoskeleton to provide cell shape and maintain cell potential.
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If a cell has a relatively high energy need, you would expect it to have _________ mitochondria than a cell with a lower energy need.
If a cell has a relatively high energy need, you would expect it to have more mitochondria than a cell with a lower energy need.
Mitochondrion:- Mitochondrion is a double-membrane-bound organelle, where energy is produced through cellular respiration. It is present in the cytoplasm of a cell and generates adenosine triphosphate (ATP), which is the main energy module of a cell. For this reason, mitochondrion is known as the "Powerhouse of the cell".
If a cell has a higher energy need than others, it is required to have more numbers of mitochondria in that cell, since more mitochondria will produce more energy.
Thus we can conclude that, if a cell has a relatively high energy need, you would expect it to have more mitochondria than a cell with a lower energy need.
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Prior to the work of _________blank, scientists did not distinguish between members of the archaea and the bacteria.
Answer:
Prior to the work of Carl Woese blank, scientists did not distinguish between members of the archaea and the bacteria.
Explanation:
Prokaryotes, which comprise two very different species i-e bacteria and archaea, may be found practically everywhere, including within human bodies as well as on every surface of the dwellings. Some inhabit habitats that are too harsh for other types of life, such as the warm pores on the seafloor. Prokaryotes are everywhere, yet they may be challenging to find, quantify, and categorize. Only a small portion of the prokaryotic on the planet that are predicted to exist are represented by those that we now learn about. In reality, in the environment of prokaryotes, the concept of a "species" itself becomes complex. Prokaryotes, meanwhile, are separated into two different branches, or lines of derivation, known as Archaea and Bacteria, according to research done in the mid-1970s by biologist Carl Woese.
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Forming the cell walls of stems, leaves, and roots, what compound is the primary structural constituent of plant tissues? group of answer choices
a. protein
b. chlorophyll
c. enzymes
d. cellulose (carbohydrates)
Forming the cell walls of stems, leaves, and roots, the Cellulose compound is the primary structural constituent of plant tissues. the correct answer is option(d).
The polysaccharide cellulose, an organic molecule with the formula n, is made up of a linear chain of several hundred to many thousands of D-glucose units that are covalently bonded. Green plants, numerous types of algae, and oomycetes all have basic cell walls that contain cellulose as an essential structural element.
Because it gives the plant cell wall stability and mechanical and tensile strength, cellulose is crucial for plant cell walls. The maintenance and control of plant cell growth and development are based on the configuration of microfibrils (cellulose). The fundamental structural element of the cell wall, cellulose, is largely responsible for its mechanical strength. Cellular activity is influenced by the positioning of cellulose microfibrils within the cell wall.
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Plant and Animal cells share the following membrane bound organelles.
a
cell wall, plasma membrane, endoplasmic reticulum, mitochondria and a nucleus
b
chloroplasts, plasma membrane, endoplasmic reticulum, mitochondria and a nucleus
c
cilia, plasma membrane, endoplasmic reticulum, mitochondria and a nucleus
d
golgi apparatus, plasma membrane, endoplasmic reticulum, mitochondria and a nucleus
Answer: They both contain membrane-bound organelles such as the nucleus, mitochondria, endoplasmic reticulum, Golgi apparatus, lysosomes, and peroxisomes. Both also contain similar membranes, cytosol, and cytoskeletal elements.
Explanation:
Answer:A or D
Explanation:
If you lift a heavy weight and hold it in your arms, close to your body, how would the bone matrix in the femur be affected?.
Answer:
The lateral sides of the diaphysis would stretch.
Explanation:
Describe the femur.
A femur is just the bone in the thigh. That is the longest and sturdiest bone in the human body. The capacity to stand + walk depends on it. Numerous crucial muscles, ligaments, tendons, other components of the circulatory system are supported by the femur as well.
How bad is a fractured femur?
A fractured femur is a dangerous injury that has to be treated immediately by a doctor. Treatment for broken femurs includes surgery plus physical therapy. The broken femur may need several months to recover. A vehicle accident, a tumble, or even being shot all have the potential to fracture the femur. The majority of femoral fractures recover fully in around four to six months, however one should be capable of returning to most movements before then.
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in a short essay (100–150 words), discuss darwin’s view of how natural selection resulted in both unity and diversity of life on earth.
Natural selection is the mechanism in which an individual is naturally selected for adaptation or for the survival according to the resources availability that explains about the diversity of life.
It also explains that the new species come from pre-existing species and all the species shares a common ancestor that explains about the unity of life.
Darwin's theory on Natural Selection was proposed for the evolution. There are five basic steps, on which natural selection was base Variation, Inheritance, Selection, Time & adaptation
Without the knowledge of natural selection, it is impossible to understand the concept of unity and diversity of life on earth.
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The organelle within the cytoplasm that is involved in the oxidative conversion of foodstuffs into usable cellular energy is the _____.
The cell organelle in the cytoplasm involved in the oxidative conversion of foodstuffs into cellular energy is the mitochondria.
Mitochondria are sausage-shaped, double- membrane bound cell organelles in the cytoplasm of eukaryotic organisms responsible for producing energy for the cell in the form of Adenosine Triphosphate (ATP). They are also called the powerhouse of the cell.
The mitochondrion is filled with many folds that form a layered structure called the cristae. This is to increase surface area to aid in the production of more ATP molecules.
Mitochondria produce energy through a process called oxidative phosphorylation.
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Why is it beneficial for cells to use atp rather than energy directly from the bonds of carbohydrates? what are the greatest drawbacks to harnessing energy directly from the bonds of several different compounds?.
It is beneficial for cells to use ATP rather than energy directly from the bonds of carbohydrates because ATP effectively supplies energy, it is advantageous for cells to use it as opposed to directly using the energy contained in the bonds of carbohydrates.
Adenosine triphosphate, sometimes known as ATP, is the cellular currency of energy. Cells may quickly access them when needed and they are conveniently stored. The key benefit is that it consistently and effectively supplies energy to the body's cells.
ATP gives the cell a method for effectively managing energy. It is possible to charge, store, and use the molecule as required. Additionally, ATP hydrolysis produces a steady flow of energy.
Different amounts of energy would be delivered if energy were captured from the bonds of several different molecules also the energy driving process from the bonds of the carbohydrates will require much time and because all metabolic processes are fast the requirement of energy is needed rapidly and hence direct consumption of ATP is beneficial to cell.
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