Answer:
Fission occurs when a neutron slams into a larger atom, forcing it to excite and split into two smaller particles—also known as fission products. Additional neutrons are also released that can initiate a chain reaction. When each atom splits, a tremendous amount of energy is released.
Explanation:
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A natural disaster is an example of what type of density factor
A. Density-Dependent
B. Density-Independent
C. Limiting factor
A natural disaster is an example of a density-independent factor. Therefore, the correct option is B.
What are density-independent factors?Density-independent factors are environmental factors that affect a population regardless of its size or density, and they can include natural disasters such as earthquakes, hurricanes, floods, droughts, wildfires, and volcanic eruptions. These events can cause mass mortality and have a significant impact on populations, irrespective of their size or density.
On the other hand, density-dependent factors, such as competition for resources, predation, disease, and migration, have a greater impact on populations as they become denser, and may cause population regulation by reducing birth rates or increasing death rates as population density increases.Therefore, the correct option is B.
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Digestion of carbohydrates is performed by several enzymes. (T/F)
True, A number of enzymes are responsible for the digestion of carbohydrates. Amylase and maltase convert starch and glycogen into glucose. The enzymes sucrase and lactase, respectively, break down lactose (milk sugar) and sucrose (table sugar).
Enzymes are much more specialised catalysts than the majority of other catalysts. Other chemicals, such as activators and inhibitors, can impact the activity of enzymes. Activators lower enzyme activity whereas inhibitors increase it. Enzyme inhibitors are present in many drugs and toxins. In addition, many enzymes get (permanently) denatured when exposed to high temperatures, losing their structure and catalytic characteristics. An enzyme's activity reduces significantly when its ideal temperature and pH range are surpassed. Some enzymes are used in the production of goods like antibiotics. Two examples are biological washing powders, which remove protein, starch, or fat stains from clothing, and meat tenderizers, which break down proteins into smaller molecules to make meat easier to chew.
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What is an example of a first class lever system?
When the fulcrum is closer to the load, it requires less effort to move the weight a shorter distance. If the fulcrum is closer to the effort, more effort is required to shift the weight further. First-rate levers include a teeter-totter, a car jack, and a crowbar.
A first-class lever is a fairly straightforward device made out of a beam supported by a fulcrum. A beam has a load applied to one end, and force is applied to the other end to balance the load. Arrows in the pictures show where the forces are being applied.
First-class levers can also include pliers, scissors, a crowbar, a claw hammer, a see-saw, and a weighing scale. With a first-class lever, the fulcrum is located between the effort (force) and the load, and the effort (force) moves over a significant distance to move the load over a smaller distance.
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Chordate characteristics Chordates possess several distinguishing characteristics that separate them from other animal groups. Check all of the features that one would use to classity members into this phylum. Check All That Apply ok nt postanal tail. cranium 臼 < Prev 20 of 22 Next> 20 pharyngeal slits 10 points notochord. eBook Print References dorsal hollow nerve cord. vertebral column.
They can be differentiated from these other animal groups by their post tail, pharyngeal slits, notochord, and dorsal hollow nerve cord.
How do pharyngeal slits work?The third characteristic of chordates is pharyngeal slits, which are holes here between or mouth, and the exterior world. Over the history of evolution, they have undergone significant modification. These apertures are utilized by early chordates to remove food particles out of the water.
What are the pharyngeal slits used for?Pharyngeal slits help fish species primitive chordates breathe and feed by allowing water from the mouth to exit via the slits. Fish gills developed into connected with these slits because micro organisms can remove unwanted this seawater for food.
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what is h's and t's?
Hypothermia. Tension pneumothorax. Tamponade – Cardiac. Toxins. Thrombosis (pulmonary embolus).
The "H's and T's" mnemonic system will assist you in remembering the elements that lead to pulseless arrest, which include pulseless electrical activity (PEA), asystole (flatline), ventricular fibrillation (VFib or VF), and ventricular tachycardia (VTach or VT).
These characteristics are mostly connected with PEA, but understanding them may help you detect the underlying etiology of any ACLS-related arrhythmia. Understanding the ACLS H's and T's can help you prepare for any ACLS scenario.
The ACLS H's and T's mnemonic is designed to aid memorize the key contributing elements to pulseless arrest, which include PEA, Asystole, Ventricular Fibrillation, and Ventricular Tachycardia. These H's and T's are most typically associated with PEA, but they can help you narrow down your search for underlying causes to any of the arrhythmias associated with ACLS.
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Show the position of carpal bones labeled on ____
Show the position of carpal bones labeled on Acronym carpal bones.
Carpal bones are the eight small bones that make up the wrist, also known as the carpus, which connects the hand to the forearm.. The Latin word "carpus" and the Greek word "karpós," which both mean "wrist," are the origins of the word "carpus." In the human anatomy, the wrist's primary function is to assist the positioning of the hand correctly and the appropriate use of the extensors and flexors of the forearm. The mobility of the separate carpal bones increases the wrist's range of motion.
The only group of bones in the wrist of tetrapods between the radius and ulna and the metacarpus is the carpus. In contrast to the metacarpus, the carpus contains bones that are not specific to individual fingers (or toes in quadrupeds). The tarsus is the equivalent portion of the foot.
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which epidermal stratum is the thickest layer in thin skin?
The stratum spinosum is the thickest layer in thin skin.
What is stratum spinosum?The epidermis, or the skin's outermost layer, contains a layer called stratum spinosum. Between the stratum basale and stratum granulosum layers, it is situated. Desmosomes, protein-based structures that hold the cells together, join the cells in this layer. The name "spinosum" comes from the flattened and spiny projections on these cells. By acting as a barrier against external elements including UV radiation, chemicals, and viruses, the stratum spinosum layer plays a crucial part in the skin's protective function. A fibrous protein called keratin, which gives the skin its strength and flexibility, is also produced by this layer. Psoriasis, eczema, and skin cancer are just a few of the skin disorders that can be brought on by abnormalities in the stratum spinosum.
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Our growing understanding of how proteins fold allows researchers to make predictions about protein structure based on primary amino acid sequence data. Consider the following amino acid sequence.
Ile - Ala â His â Thr â Tyr â Gly â Pro â Phe-Glu â Ala â
Ala â Mat â Cys â Lys â Trp â Glu â Ala â Gln-Pro â Asp â
Gly âMet â Glu â Cys â Ala â Phe â His - Arg
(a) Where might bends or β turns occur?
(b) Where might intrachain disulfide cross-linkages be formed?
(c) Assuming that this sequence is part of a larger globular protein, indicate the probable location (external surface or interior of the protein) of the following amino acid residues: Asp, Ile, Thr, Ala, Gln, Lys. Explain your reasoning.
Researchers can now anticipate proteins' structures based solely on sequence information because to advances in our knowledge of how proteins fold.
Describe a protein.
Protein is a highly complex molecule found in all living things. Proteins have a high nutritional value and play a crucial role in many of the chemical reactions required for life. In the early nineteenth century, scientists, such as Swedish chemist Jöns Jakob German chemist, realized the significance of proteins.
What's a protein's structure?
A supplementary amine (in proline), a molecule with the amino group (NH2) attached to the aliphatic carbon chain, and an amino with five atoms of carbon (glutamic acid), are also found in proteins. Aspartic and glutamic acids both have two carboxylic acid groups (COOH), making them dicarboxylic acids.
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not counting roadsides, the majority of turfgrass acreage in the u.s. is in non-rural areas. true or false ?
not counting roadsides, the majority of turfgrass acreage in the u.s. is in non-rural areasis true .
What is a turfgrass?Turfgrasses are narrow-leaved grass species that form a uniform, long-lived ground cover that can tolerate traffic and low mowing heights (usually two inches or below). Only a few grass species produce acceptable turf in the northern U.S. These grasses are referred to as the cool-season turfgrasses.
What is the difference between lawn grass and turf grass?Grass used in a landscape customarily is referred to as a "lawn" while grass used on a baseball field or golf course is referred to as "turf." By definition, a lawn is a piece of residential, commercial or industrial land on which grass grows.
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which structure of the urinary system is responsible for filtering out blood of toxins?
Healthy kidneys sift about half a cup of blood, eliminating wastes and surplus water to create urine. Two skinny muscle tubes called ureters, on each side if your bladder, carry urine from your kidneys to the bladder.
What do they use to remove poisons from urine?Your kidneys are situated on either side of your ribcage, close to the centre of your back. They are roughly the size as your fist and resemble kidney beans. They have minuscule filtering organs called nephrons that filter blood and produce urine so that waste materials can exit the body.
In what way does the body remove toxins?We exhale carbon dioxide, a waste product and toxin, to get rid of it. Your liver, skin, kidney, intestines, lymph nodes, blood arteries, and other organs also aid in toxin removal. We expel toxins through breathing out as well as through faeces, urine, and sweat.
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What are thickened regions of muscle that function like valves to control the flow of contents at various points in the GI tract?
Sphincters are thickened regions of muscle that function like valves to control the flow of contents at various points in the GI tract.
Sphincters are muscles organized in an annular manner that raise intraluminal pressure, thereby reducing the rate of movement of luminal contents from one compartment to another. Spontaneous tone generation is also a feature of these sphincter muscles. Four distinct smooth muscle sphincters are present in the GI tract: the lower esophageal sphincter (LES), the pyloric sphincter (PS), the ileocecal sphincter (ICS), and the internal sphincter of anus(IAS). The lower esophageal sphincter present at the top of the stomach regulates food passing through the esophagus into the stomach and prevents regurgitation of the contents of the stomach into the esophagus. The pyloric sphincter at the bottom of the stomach controls the passage of food out of the stomach into the small intestine.
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alternate forms of the same gene are called
Alternate forms of the same gene are called alleles.
Each gene has a specific location on a chromosome, and different versions of the same gene can exist at that location. These different versions are the alleles.
Each allele may have a slightly different DNA sequence, leading to different variations in the trait that the gene controls. For example, the gene for eye color may have different alleles for brown eyes, blue eyes, and green eyes. It is important to note that while each individual has two copies of each gene, one from each parent, they may have the same or different alleles for that gene.
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How does salt concentration effect on osmosis in potato and its percentage of mass
Osmosis will result in a greater loss of mass for the potato if the concentration of the salt solution is raised.
How does the rate of osmosis change depending on the salt concentration?
Osmosis is started by salt, which draws water to it and causes it to traverse the membrane. A solute is salt. Water diffuses when added to a solute, dispersing the salt concentration and forming a solution.
Water will flow from the potato into the cup if the salt concentration in the cup is greater than that in the cell walls of the potato. This causes the potato cells to shrink, which is why the potato strips' length and diameter decrease.
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Which statements describe the characteristics of an individual protein? Select two options.
The branch of science which deals with chemistry uses in biology is called biochemistry.
What the digestion of protein requires?
The digestion of protein requires the enzyme which catalyzes the reactant and speeds up the reaction by decreasing the activation energy.The protein molecule has an active binding site that is specific to each protein. Each protein has a specific type of enzyme that catalyzes the reaction.
It is specific to one biochemical reaction and It slow down the rate of a biochemical reaction.
Therefore, The branch of science which deals with chemistry uses in biology is called biochemistry.
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Considering the intensity of Insolation for New York and Lincoln, explain the differences in the temperature curves for the two cities.
Overall, the differences in the temperature curves for New York and Lincoln can be attributed to a combination of factors, including the intensity of insolation ,latitude, proximity to water, and prevailing winds. While insolation is an important factor, it is not the only one that determines temperature, and other factors can play a significant role in shaping temperature patterns for a particular location.
What is Temperature?
Temperature is a measure of the average kinetic energy of the particles in a substance or system. In other words, it is a measure of how hot or cold a substance or system is. The SI unit for temperature is the Kelvin (K), although temperature can also be measured in other units such as degrees Celsius (°C) and degrees Fahrenheit (°F).
The intensity of insolation, or the amount of incoming solar radiation, is one of the key factors that affects the temperature of a location. However, there are other factors that can also influence temperature, such as latitude, altitude, proximity to water, and prevailing winds.
New York and Lincoln are located at different latitudes, with New York being further north than Lincoln. This means that New York receives less intense insolation than Lincoln, particularly during the winter months when the sun is lower in the sky. As a result, the temperature in New York tends to be colder than in Lincoln during the winter months.
In addition, New York is located on the coast, which moderates its temperature somewhat by keeping it cooler in the summer and warmer in the winter than locations further inland. Lincoln, on the other hand, is located inland and is not influenced by coastal effects. This means that Lincoln tends to have larger temperature swings than New York, with hotter summers and colder winters.
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What are the 4 quadrants of the body?
Answer:
The four quadrants are:
Left upper quadrant (LUQ)
Left lower quadrant (LLQ)
Right upper quadrant (RUQ)
Right lower quadrant (RLQ)
How many odor sensitive olfactory receptor cells do humans have?
The olfactory epithelium Bowman's glands produce a layer of mucus that is approximately 60 microns thick and covers about 2.5 cm² of the human olfactory area,
Human olfactory area, which is home to approximately 50 million receptor cells with 8–20 cilia.
Which four main glands are there?The endocrine system's glands make hormones, which are chemical messengers that travel through the blood to other parts of the body. The pituitary, thyroid, parathyroid, thymus, and adrenal glands are all important endocrine glands.
Is an organ a gland?an organ that is responsible for the production of one or more substances, such as milk, hormones, digestive juices, sweat, tears, or saliva. The substances are released directly into the bloodstream by endocrine glands.
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How could a protein kinase signal transduction pathway that involves cAMP as a second messenger be turned offA. The pathways would not turn off.B. Activate a kinase that activates phosphodiesteraseC. G protein-linked receptor, GTP, and effector proteinD. change in shape and function of the proteins.
A protein kinase signal transduction pathway that involves cAMP as a second messenger can be turned off by Option (B) activating a phosphodiesterase enzyme.
Phosphodiesterase breaks down cAMP, leading to a decrease in the intracellular concentration of cAMP. This, in turn, reduces the activation of downstream signaling molecules and eventually turns off the signal transduction pathway. Another way to turn off the pathway is through the inactivation of the upstream signaling molecules, such as G protein-linked receptors, GTP, and effector proteins. Additionally, a change in the shape and function of the proteins involved in the pathway can also lead to the inhibition of the pathway. Overall, the key to turning off this signal transduction pathway is to decrease the concentration of cAMP and/or disrupt the signaling cascade by inactivating the key players involved.
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members of which bacterial phylum share a unique morphology? Firmicutes, Chloroflexi, Chlorobi, Proteobacteria, Cyanobacteria
Members of Chloroflexi, bacterial phylum share a unique morphology.
Many of the filamentous bacteria found in activated sludge wastewater treatment facilities around the world are Chloroflexi members. Chloroflexi seem to be more frequently observed in phosphorus (P) and nitrogen (N) removal treatment facilities, the majority of which run at extended sludge ages and subject the biomass to anaerobic conditions.
The Chloroflexi appear to play a crucially advantageous role in providing the filamentous framework around which flocs are formed, feeding on the remains of lysed bacterial cells, fermenting carbohydrates, and breaking down other complex polymeric organic compounds into low molecular weight substrates to support Chloroflexi growth and that of other bacterial populations.
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what makes a cell a target of a particular hormone?
Answer:
receptors for the hormone
Hormones target specific cells by binding to receptors on the cell surface, initiating cellular responses based on receptor-hormone interaction.
Hormones exert their effects on specific target cells by binding to receptors that are present on the cell surface. These receptors are proteins that are specifically designed to recognize and interact with a particular hormone molecule. When a hormone circulates in the bloodstream, it will only affect cells that possess the corresponding receptors.
The binding of the hormone to its receptor triggers a cascade of cellular events, which can include changes in gene expression, activation of signaling pathways, and modifications in cellular functions. The presence or absence of specific hormone receptors on a cell's surface determines whether that cell will respond to a particular hormone. Therefore, the specificity of hormone action is dictated by the interaction between hormone molecules and their specific receptors on target cells.
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a cell with a large volume will have a more difficult time doing what?
Even a cell with a huge volume cannot provide the interior of the cell with all the nutrients it requires. when a cell's surface area is insufficient to support it.
The ratio of surface area to volume decreases when a cell enlarges because the volume develops much more quickly than the surface area. The issue is that the cell would not be able to remove waste products and get enough oxygen and nutrients.
A cell's DNA is put under increased stress as it grows, and it has a harder time getting adequate nutrients and wastes to cross the cell membrane. Surface to Volume Ratios: It is important to note that a cell's surface area to volume ratio diminishes with size.
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how is a person’s daily life affected by cystic fibrosis?
Cystic fibrosis is a malignant disorder that primarily affects the functioning of delicate organs like lungs, digestive tract etc.
Cystic fibrosis is a genetically acquired disease which is caused by the improper gene expression in offspring from the parent organism and this could pass on from generation to generation.
This condition affects the cells associated with sweat, mucus and digestive juices production. In this the mucus becomes thick causing the clogging in various organs, e.g lungs, pancreas,intestine etc.
Cystic fibrosis affects an individual's life by making him prone to certain chronic problems like malnutrition, respiratory tract disorders, poor growth and critical lung diseases.
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which role does the enzyme helicase play in dna replication?
A. cuts new dna strands away from old B. brings in new nitrogenous bases C. chevron left.
Helicase is a crucial enzyme that plays a crucial role in DNA replication. It is involved in the unwinding of the DNA double helix, which is a necessary step in DNA replication.
DNA replication is the process by which cells make identical copies of their DNA. The process involves the unwinding of the double helix, the separation of the strands, and the synthesis of new complementary strands by DNA polymerase enzymes.
Helicase is responsible for the unwinding of the DNA double helix by breaking the hydrogen bonds that hold the two strands together. The process of DNA replication requires the separation of the two complementary strands of DNA, which are held together by hydrogen bonds between the nitrogenous bases.
Helicase uses energy from ATP hydrolysis to break these hydrogen bonds and separate the two strands. Once the strands are separated, DNA polymerase enzymes can add new nucleotides to the complementary strands, thereby replicating the DNA.
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When you use a field guide to identify a species by its appearance, you are applying the _____.A) Evolutionary species concept B) Morphospecies concept C) Ecological species concept D) Biological species concept
Applying the natural species concept is what you do when you utilize a guide book to recognize a species by its outward appearance.
For detecting species in the wild, which species idea would be most helpful?For recognizing species in the wild, species idea would be most helpful because it emphasizes physical characteristics of the body and structural characteristics, and it's the most common method of identifying species. geographical isolation without sympatric speciation
What benefits do species identification provide?It is essential for both biologists and the general public to comprehend who species is and how to recognize them. As species disappear, biological variety is lost, and the only way to influence the social, economic, and political landscape is to comprehend species.
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Outline four consequence of an outbreak of the COVID-19 disease within a population of your country (include environmental implications)
The global outbreak of coronavirus disease 2019 (COVID-19) is affecting every part of human lives, including the physical world.
What is the definition of a disease?disease, any harmful deviation from the normal structural or functional state of an organism, generally associated with certain signs and symptoms and differing in nature from physical injury. A diseased organism commonly exhibits signs or symptoms indicative of its abnormal state.
What diseases have no cure?Medical conditions such as diabetes, asthma, Alzheimer's and other forms of dementia, cannot be "cured," but they can be managed. In the past, medical treatment was all about treating the disease, but these days, many doctors have shifted their focus to the patient themselves, rather than just the disease.
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The __________. of leaves have lowest water potential because they have very high solute concentration due to loss of water during transpiration.
Because of the high solute content present in the phloem channels of leaves as a result of water loss during transpiration, these channels have the lowest water potential.
What happens to the water potential as the concentration of the solute rises?The likelihood that water in a solution may undergo osmosis reduces as a solution's solute concentration rises. As a result, a solution's osmotic (solute) potential becomes more negative the more solute is added to it.
What causes the least amount of transpiration?The amount of transpiration varies depending on the kind of flora, with rainforests producing the most (70%) and steppe and desert producing the least (51%). Geographical location, period, hour of day, and weather patterns can all be used to explain variations in transpiration.
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if a dna sample were composed of 15% adenine, what would be the percentage of guanine?
The composition of the DNA can be calculated using the Chargaff's rule. According to the rule, the number of cytosine will be equal to guanine and the number of thymine will be equal to adenine and vice versa. So, C = 15%, G = 15%, T = 35%, A = 35%.
While thymine is often only found in DNA and uracil is only found in RNA, guanine, along with adenine and cytosine, is present in both DNA and RNA. The two tautomeric forms of guanine are the common enol form and the main keto form (see figures).
It forms three hydrogen bonds with cytosine to attach to it. The C-2 carbonyl and the N-3 amine serve as the hydrogen-bond acceptors in cytosine, while the amino group serves as the hydrogen-bond donor.
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Why do shelters and rescues try to match an animal’s personality with the family that they will go home with?
Shelters and rescues try to match an animal's personality with the family that they will go home with for the following reasons:
Better chance of success.Welfare of the animal.Long-term commitment.Shelters and rescues try to match an animal's personality with the family that they will go home with for the following reasons:Better chance of success: Matching an animal's personality with the right family can increase the chances of a successful adoption. If a family adopts an animal with a personality that is not compatible with their lifestyle or personality, it can lead to a failed adoption and the animal may end up back in the shelter or rescue.Welfare of the animal: By ensuring that an animal's personality is a good match for a family, shelters and rescues can help ensure that the animal will be happy and healthy in its new home. For example, if a high-energy dog is placed with a sedentary family, the dog may become bored and develop behavior problems.Long-term commitment: When a shelter or rescue matches an animal's personality with a family, it is more likely that the family will form a strong bond with the animal and make a long-term commitment to its care. This can help reduce the number of animals that are surrendered to shelters and rescues due to behavior problems or other issues.Note: matching an animal's personality with the right family can help increase the chances of a successful adoption, improve the welfare of the animal, and promote long-term commitment to the animal's care.
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both carrier and ________ proteins are involved in passive transport of molecules through the cell membrane.
Both carrier and channel proteins are involved in the passive transport of molecules through the cell membrane.
Passive transport is the movement of molecules across the cell membrane without the input of energy. It occurs down the concentration gradient, from an area of higher concentration to an area of lower concentration.
The two main types of passive transport are diffusion and facilitated diffusion. In facilitated diffusion, molecules are transported across the cell membrane with the help of specific transport proteins.
Channel proteins provide a hydrophilic pathway for the passage of small, water-soluble molecules, such as ions and water, through the cell membrane. Carrier proteins, on the other hand, bind to specific molecules and undergo a conformational change that allows the molecule to be transported across the cell membrane.
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Which of the following statements about polymers is true?
A: Polymers exist only in the solid state.
B: Polymers contain fewer than a hundred atoms.
C:
Polymers have many bonded subunits.
D: Polymers are organic proteins.
Answer:
C: Polymers have many bonded subunits.
Explanation:
This statement is true. Polymers are large molecules composed of repeating subunits called monomers, which are bonded together through chemical reactions. These subunits can be simple molecules or complex structures, such as amino acids or nucleotides, and can number in the thousands or even millions. Polymers can exist in a variety of physical states, including solid, liquid, and gas. While many polymers are organic compounds, they are not necessarily proteins, which are a specific type of organic polymer made up of amino acid monomers.