Most cells are relatively small for reasons related to the of substances into and out of cells. True or false?.
It is true that most cells are relatively small for reasons related to the of substances into and out of cells
All cells, whether prokaryotic or eukaryotic, must be tiny. Consider the volume and size of a typical cell. Not all cells are spherical, although most are. The formula for a sphere's surface area is 4πr2, whereas the formula for its volume is 4πr3/3. As a cell's radius grows, its surface area grows as the square of its radius, while its volume grows as the cube of its radius (much more rapidly).
As a result, as a cell grows larger, its surface area-to-volume ratio drops. The same idea would apply if the cell were shaped like a cube (below). If the cell becomes too big, the plasma membrane will not have enough surface area to sustain the increased diffusion rate. In other words, when a cell develops, its efficiency decreases. Divide to become more efficient; create organelles that conduct specialized jobs to become more efficient.
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Polymers are formed by hydrolytic reactions of monomers.
true or false
The given statement was (false) , Polymers are not formed by hydrolytic reactions.
Hydrolysis process is defined as the process of breakdown of Polymers into monomers. The polymer separates into its two components as a result of the hydrolysis process.
If the constituents are unionised, a split water molecule gives one a hydrogen atom (H-) and the other a hydroxyl group (OH-). If they are ionised, one receives two hydrogen atoms and a positive charge, while the other receives an oxygen atom and a negative charge.
Polymers are mainly formed by two processes known as condensation and addition polymerisation.
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The ________ is the liquid portion of the cell between the plasma membrane and nucleus.
The cytoplasm is the liquid portion of the cell between the plasma membrane and nucleus. The cytoplasm is anything between the plasma membrane and the nuclear envelope in eukaryotic cells with nuclei. The cytoplasm in prokaryotes, which lack a nucleus it simply refers to the anything contained inside the plasma membrane.
The lipid bilayer that surrounds the entire cell is known as the cell cytoplasm membrane. The nuclear membrane, on the other hand, completely encircles the nucleus. The cell membrane is a single the continuous sheet. The cell membrane controls the passage of materials into and out of the cell.
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Sodium losing an electron is an ________ process and fluorine losing an electron is an _______ process.
endothermic process, endothermic process
Both the removal of an electron from sodium and the removal of an electron from fluorine are endothermic processes. Ionization enthalpies are always positive because removing an electron from an atom always requires energy. It is always an endothermic process.
Endothermic processes:
Heat transfer from the environment to the systems is an endothermic process. As a result, the system has absorbed heat from the environment. An endothermic process has a positive delta H change in enthalpy. Ice cube melting is one instance.
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Most bacteria have a cell wall. the material that a bacterial cell wall is made up of is most commonly:_____.
In general, the higher the intensity of exercise, the greater the contribution of:______
In general, the higher the intensity of exercise, the greater the contribution of anaerobic energy production/ fast glycolysis and is denoted as option B.
What is Exercise?This is referred to as a type of physical activity which helps to keep the body fit and improves the general well being of individuals.
Anaerobic glycolysis is also referred to as fast glycolysis and occurs during short intense exercises. During this process, glucose is transformed into to lactate when there are limited amounts of oxygen present in the cells.
There is no adequate energy produced in this process unlike in aerobic glycolysis which has sufficient amount of oxygen and the exercises are less intense.
This is therefore the reason why option B was chosen as the most appropriate choice.
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The options are:
a. aerobic energy production/slow glycolysis
b. anaerobc energy production/ fast glycolysis
c. the Kreb cycle to the production of ATP
d. the electron transport chain to produce ATP
Which organelle plays a role in intracellular digestion?
a) lysosome chloroplast
b) ribosome golgi
c) apparatus plasmodesmata
Lysosome organelle plays a role in intracellular digestion.
What is intracellular digestion?To function, every living thing needs energy. Cells must not only take molecules from their surroundings but also degrade them in order to obtain energy from their external environment. Intracellular digestion is the term for this process.
Intracellular digestion is the process where food is taken directly into the cells and digested there. It happens in unicellular organisms like amoebas.
In intracellular digestion, food components are broken down into small molecules inside the food vacuoles of the cell. In extracellular digestion, food components are broken down into small molecules outside of the cell, either on the organic matter that is decomposing or in the alimentary canal lumen.
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QUESTION 2
Destroying the rainforest causes a number of problems. Which of the following would NOT change as a result?
O The amount of biodiversity in the biosphere.
O The transfer of energy in all food chains..
O Levels of carbon dioxide in the atmosphere.
O The potential to find cures for illnesses.
Answer: D
Explanation:
A stroke victim is experiencing memory loss and impaired learning capacity. the nurse knows that brain damage has most likely occurred in which lobe?
Answer:
Experts believe this occurs due to impaired memory and perception skills after injury to the "temporal lobe" from a stroke.
Explanation:
The belief that women were neither concerned nor troubled with sexual feelings was typical of:__________
The belief that women were neither concerned nor troubled with sexual feelings was typical of the Victorian Era.
Women in the Victorian era were suppressed and treated unequally to men. They were not even allowed to talk about undergarments to buy them and were forced to stay committed to a single man, her husband, after marriage. Women at that time were expected to stay modest and pure.
In the Victorian era, sex was not discussed openly, and ideas were confined. Dealing with inequality, women were expected to stay in a marriage with their husbands and not be involved in sex with any other man except their spouse. However, men were allowed to have extramarital affairs and women could not even ask for a divorce.
Women were not allowed to fulfill their physical desires. Instead, it was believed that sexual relations for women could not be of any concern for desires or feelings. But this was a luxury reserved for men.
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Can the model explain the patterns of the seasons on Earth? Explain.
Answer:
the circle around the sun and there's a small structure called planets.
The effect of high blood ph (alkalosis) on the respiratory centers in the brain is/are?
Answer:
Whenever the blood's acid-base equilibrium is affected by increasing quantities of carbon dioxide, pulmonary alkalosis results. People who have fast, uncontrolled breathing regularly face it (hyperventilation). Treatments that reduce the chance of hyperventilation are a component of the therapy. Alkalosis leads to cerebral vasoconstriction, which as a result decreases the brain's processing power and likely contributes to misperceiving and misreading. Hyperventilation is a subsequent disease to respiratory alkalosis. The most common causes of hyperventilation include shocks like hypoxia, metabolic acidosis, discomfort, stress, or a rise in metabolic demand. The body mostly uses the lungs to make up for both acidosis and alkalosis. When we breathe, the lungs let a certain amount of carbon dioxide leave, which alters the overall alkalinity of our blood. Additionally, the kidneys contribute by regulating the release of bicarbonate ions.
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Which code represents telephone calls by a registered nurse to a disease management program member for monitoring purposes, per month?
HCPCS S0320 represents telephone calls by a registered nurse to a disease management program member for monitoring purposes, per month
The term HCPCS is the abbreviation for Health Care Common Procedure Coding System. It refers to procedure codes by American Medical Association aimed at health care. The mentioned coding system was established in 1978. HCPCS codes were under the category of voluntary use. But, in 1996, under the HIPAA act, the usage of this coding system became mandatory. HIPAA is the abbreviated form for Health Insurance Portability and Accountability Act.
The codes are divided into three levels - level I code, level II code and level III code. Level I code is numeric in nature. It contains codes as per Current Procedural Terminology (CPT). Level II code is alpha numeric in nature. The constituents of this level of code are non physician services and prosthetic devices. Level III codes were the local codes that have been discontinued in 2003. The HCPCS S0320 is referred in short form as "Rn telephone calls to dmp".
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An individual with type b blood has ______ on the plasma membranes of the red blood cells and __________ in the plasma.
An individual with type b blood has Antibody b on the plasma membrane of the red blood cells and antigen A in plasma.
What is the meaning of blood group?There are mainly four types of blood groups A, AB, O, and B. Blood group O is the universal donor, and blood group AB is the universal receiver.
Blood group A has antibody A on the plasma membrane of the red blood cells and Antigen B in plasma. Blood group AB does not have any antibodies in plasma. Blood group O does not have any antigen in red blood cells.
Blood groups are classified as Rh positive and Rh negative on basis of the presence and absence of Rh antigen. If Rh antigen is present blood group is called Rh positive and if Rh antigen is absent it is called Rh negative.
Therefore, An individual with type b blood has Antibody b on the plasma membrane of the red blood cells and antigen A in plasma.
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A package of peanut butter crackers contains 7g of fat, 16g of carbohydrates and 4g of protein. what are the alories for protein?
Protein: 4 x 4 = 16 calories
The number of calories per gram in each macronutrient is as follows: 4 calories are found in carbohydrates, 9 calories from fat, 4 calories in protein.
So on multiplying based on their calories per gram we get:
Calories of each molecule:Fat: 7 x 9 = 63 cal
Carbohydrates: 16 x 4 = 64 cal
Protein: 4 x 4 = 16 cal
Definition of caloriesCalories are the units of energy used by your body during food digestion and absorption. A food might provide your body extra energy if it has more calories. Your body stores extra calories as body fat when you consume more calories than you need. Even foods without fat might have a lot of calories.What kinds of calories are there?Each of the three primary macronutrients we consume—carbohydrates, fats, and proteins—contains calories. The number of calories per gram in each macronutrient is as follows: 4 calories are found in carbohydrates, 9 calories from fat, 4 calories in protein.To learn more about calories visit:
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The hypermetabolic state leading to cachexia in terminal cancer is thought to be because of:_______.
Tumor necrosis factor is hypothesised to be the source of the hypermetabolic condition that results in cachexia in terminal cancer patients.
The function of the tumour necrosis factorA multipurpose cytokine called tumour necrosis factor (TNF) is crucial for many distinct biological processes, including cell survival, proliferation, differentiation, and death.
Inflammatory cells release TNF, a pro-inflammatory cytokine that may contribute to inflammation-related carcinogenesis.
Tumor necrosis factor is made somewhere, right?The inflammatory cytokine tumour necrosis factor alpha (TNF alpha), which is produced by macrophages and monocytes during acute inflammation, is in charge of a wide range of signalling events inside of cells that result in necrosis or apoptosis.
Tumor necrosis factor was produced by which cells?TNF is a multifunctional cytokine that is mostly produced by macrophages, natural killer (NK) cells, and lymphocytes.
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Can you please answer this question I really need it today to be complete.
Answer:
Im pretty sure that it's, "Lunar Rhythm"
Explanation:
Lunar Rhythm- the regular ebb and flow of oceans and very large inland bodies of water; typically two high and two low tides occur each day (about 24.8 hours).
Answer:
A. Lunar rhythm
Explanation:
Their clocks are set by the tides of the lunar rhythm.
Which additional model component is necessary to explain how geranium plant leaves produce carbohydrates?
Magnesium is a further model component necessary to explain how geranium plant leaves produce carbohydrates.
What is geranium?
Geranium is a genus of 422 species of flowering annual, biennial, and perennial plants that are commonly referred to as the cranesbills. they're found throughout the temperate regions of the world and the mountains of the tropics, but mostly within the eastern part of the Mediterranean region. The long, palmately cleft leaves are broadly circular in form
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Many antibiotics kill bacteria because they hinder translation by prokaryotic _____.
Many antibiotics kill bacteria because they hinder translation by prokaryotic ribosomes.
What are ribosomes?An intercellular structure made of both RNA and protein, and it is the site of protein synthesis in the cell is said to be ribosomes.
The ribosome reads the messenger RNA (mRNA) sequence and translates that genetic code into a specified string of amino acids, which grow into long chains that fold to form proteins.
Ribosomes was present both in plants cells and animal cells.
Some ribosomes, which are the protein manufacturing organelles in the cell, are suspended in the cytosol of a cell, whereas other ribosomes are attached to the outside of the nucleus. Many antibiotics kill bacteria because they hinder translation by prokaryotic ribosomes.
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In the stomach, food processing continues and secreations from stomach glands aid the initial digestion of?
In the stomach, food processing continues and secretions from stomach glands aid the initial digestion of Proteins
Proteins are large, complex molecules that play many critical roles in the body. They do most of the work in cells and are required for the structure, function, and regulation of the body's tissues and organs
Pepsin would be a stomach enzyme used to break down proteins in food that has been consumed. Pepsin is produced by the main cells of the stomach as pepsinogen, an inactive zymogen. The stomach's lining's parietal cells also secrete hydrochloric acid, which reduces the pH of the stomach. Pepsin is activated at a pH between 1.5 and 2.
Once a protein source enters the human stomach, it is broken down into smaller molecules called amino acids by the stomach's hydrochloric acid as well as proteases enzymes.
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If a wide-spectrum fungicide that kills all fungal species were used extensively in a forest, what effects would you expect the treatment to have on the forest vegetation?
The majority of plants' capacity to absorb water and nutrients from soil would be significantly diminished.
Fungicide- Pesticides known as fungicides work to eradicate or stop the development of fungus and their spores. They are effective against rusts, mildews, and other plant-damaging fungi. They could also be used elsewhere to manage mold and mildew.
Fungus- Eukaryotic creatures known as fungi include yeasts, molds, and mushrooms as well as other microbes. These creatures fall under the category of fungus. The creatures that make up the Kingdom Fungi are pervasive and have a cell wall. They fall under the category of heterotrophs among living things.
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With incomplete dominance, a likely ratio resulting from a monohybrid cross would be ________. 1:2:1 3:1 9:3:3:1 1:2:2:4 3:3
With incomplete dominance, a likely ratio resulting from a monohybrid cross would be 1:2:1.
A monohybrid cross is a cross between two homozygous individuals, which produces the contrary phenotype for a particular genetic characteristic. A monohybrid cross is a cross between two organisms of P generation (parental generation) that differ from each other in a single specific characteristic. The organisms of the P generation are homogenous for the specified characteristic. However, the alleles for that specific trait vary between each parent. Based on chance, the potential genetic results of a monohybrid cross can be predicted using a Punnett square. A dihybrid cross, or genetic cross between parents that differ in two features, can also be subjected to this kind of genetic study.
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Which microorganism is often found associated symbiotically with the roots of bean plants?
a. cyanobacteria
b. rhizobium spp.
c. archaea
d. gram-positive bacteria
The microorganism Rhizobium spp is frequently seen living symbiotically with the roots of bean plants.
The best option is B.
Where does a microorganism belong?We are accompanied by microbes, which are incredibly tiny living things that are invisible to the unaided eye. They are organisms that are both terrestrial and avian. The human body is home to millions of these bacteria, often known as microorganisms. While certain bacteria cause disease in us, others are essential to our health.
What are microorganisms so important?For instance, the human body includes 10 bacteria for each and every human cell, and these microbes aid in the production of vitamin K, stimulate the growth of the immune system, and detoxify poisons. Of course, many of the items we enjoy, like bread, cheese, and wine, must be produced by microbes.
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Between 23 and 30 weeks connections form between the cerebral cortex and the brain regions that recognize _______ sensitivity.
Between 23 and 30 weeks connections form between the cerebral cortex and the brain regions that recognize pain sensitivity.
Your cerebral cortex, which is located on top of your cerebrum, is its outer layer. The greatest part of your brain is called your cerebrum. Your brain is split into two hemispheres by your cerebrum. The corpus callosum, a network of nerve fibres, connects the hemispheres together.The brain is a sophisticated organ that manages every bodily function as well as thought, memory, emotion, touch, motor skills, vision, respiration, temperature, and hunger. The central nervous system, or CNS, is made up of the spinal cord that emerges from the brain.The anterior cingulated cortex, insular cortex, prefrontal cortex, thalamus, primary somatosensory cortex (S1), secondary somatosensory cortex (S2), and the insular cortex are some of these areas. These areas comprise the pain neuromatrix that Melzack has described.To learn more about cerebral cortex.
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Specialized myoepithelial cells can be found amid the secretory cells of which glands?
Specialized myoepithelial cells can be found amid the secretory cells of apocrine and merocrine sweat glands.
What are Glands?Glands may be defined as the cluster of cells in an animal's body that significantly synthesizes substances like hormones and liberate them into the bloodstream specifically. There are two types of glands that are typically present in humans.
Endocrine glands release the substances directly into the bloodstream.Exocrine glands release the substances into a duct or opening to the inside or outside of the body.Specialized myoepithelial cells are found amid the secretory cells at the deep end of the glands like apocrine and merocrine. Both of them are sweat glands.
Therefore, apocrine and merocrine are the glands that secrete specialized myoepithelial cells.
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In dna sequencing, how does the addition of dideoxynucleoside triphosphates (ddntps) terminate the synthesis of new dna? \
ddNTPs have a hydrogen at 3' position which terminates synthesis of DNA.
ddNTPs is the abbreviated form for dideoxynucleotides triphosphates. They are known as chain elongating inhibitors. The Sanger method is a sequencing technique that is used to increase the number of DNA copies. The DNA synthesis requires magnesium ions, a single-stranded DNA template, oligonucleotide primer, and nucleotide precursors like dATP, dGTP, dTTP, and dCTP. Also, DNA polymerase is required which is an essential component for DNA synthesis.
The Sanger sequencing method is a significant process evident by its use in Human Genome Project which helped scientists in sequencing the human genome. The small sequenced fragments are joined together to form large regions subsequently forming chromosomes.
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For the polymerization of amino acids to form a protein, one would expect the entropy change in the reaction to be negative . this entropy change is expected because _________ .
For the polymerization of amino acids to form a protein, one would expect the entropy change in the reaction to be negative . this entropy change is expected because small monomers are joining to form polymer which decreases the degree of freedom.
Negative entropy change occurs when non-spontaneous change occur in the system. It means something which is more disordered will become less disordered hence energy will be required for the process.
As the monomers of the amino acids binds together to form a long polypeptide chain. It will lead to decrease in the degree of freedom of the amino acids molecule. Hence it can be called as negative entropy change.
Whenever monomers are joined together to form a macromolecule it will be show a negative entropy change.
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Most cells are relatively small for reasons related to the of substances into and out of cells. True or false?.
It is True to say that most cells are tiny due to the diffusion of chemicals into and out of cells.
What three forms of diffusion are there?Simple diffusion is the movement of ions or molecules from a high concentration area to a low concentration area.
The moving components in osmosis are water molecules. Through a semi-permeable barrier, they travel from a region of low solute concentration to a region of high solute concentration.
The passage of hydrophilic ions or molecules over the plasma membrane is known as facilitated diffusion. The distinction is that transport proteins enhance the diffusion.
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What challenges would the wildlife of the Southwest encounter after the jet stream shifted? predict what would happen to the population of the saber-tooth cats and mammoths
According to a recent analysis, the extinction of woolly mammoths and other huge animals more than 10,000 years ago was triggered by the same "trophic cascade" of ecosystem disturbance that top predators like wolves, cougars, and sharks are causing now. Researchers claim that this mass extinction was brought about by newly arriving humans tipping the scales of power and competing with powerful predators like sabre-tooth cats in a study that was just published in the journal Bioscience. A long-lasting equilibrium was upset, which could be the reason why two-thirds of North America's huge mammals disappeared during this time. Ripple stated, "We think the evidence suggests that substantial ecosystem changes, leading to these domino consequences, can be induced either by removing or introducing a major predator. "The difficulties may have started by adding a predator, in this case, humans, much as they did with woolly mammoths and sabre-tooth cats," says the author.
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carbon from glucose is essential for the formation of amino acids. which process is responsible for the production of glucose in plants?(1 point) citric acid cycle citric acid cycle dehydration synthesis dehydration synthesis photosynthesis photosynthesis glycolysis
Carbon from glucose is essential for the formation of amino acids the process which is responsible for the production of glucose in plants is photosynthesis.
Photosynthesis is the process by which plants or other organisms transforms light energy into chemical energy. During the process of photosynthesis, plants need three basic things to live: water, sunlight and carbon dioxide.
Photosynthesis is the process by which a plant produces its food using energy from sunlight, carbon dioxide from the air and water from the soil. The word photosynthesis can be separated to make two smaller words: ‘photo’ which means light ‘synthesis’ which means putting together
In this process, light energy from the Sun is absorbed by the green substance, called chlorophyll, present in leaves. This energy allows the production of glucose (food) by the reaction between carbon dioxide and water. Oxygen is also produced as a by-product.
Carbon dioxide + Water → Glucose + Oxygen
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