Covalent and phosphodiester bonds help proteins maintain their shape is not true.
How do covalent bonds maintain the structure of proteins?Amino acid polymers make up proteins. In order to create the linear structures known as polypeptides, amino acids must establish a particular sort of covalent link (peptide bond). The functional protein conformation is created by folding the polypeptides into designated structures.
The linear chain of amino acids created by joining together amino acids through peptide bonds is referred to as the primary structure of a protein. The secondary structure, which comprises -helix and -pleated sheet structures, is the result of local interactions between segments of a polypeptide chain. The three-dimensional folding known as the tertiary structure is generally caused by interactions between R groups.
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what is holoendemic and examples of diseases under it
Holoendemic is a kind of disease in which affects majority of people in a population are affected by this type of endemic sickness. Early in life, this infection is extremely common. As opposed to youngsters, adults do not exhibit disease signs as frequently.
Hepatitis B in parts of the Marquesas Islands and ocular trachoma in several regions of sub-Saharan Africa, where almost all children in those groups have been infected are examples of holoendemic disease.
more examples of holoendemic diseasesMalaria: A parasite transmitted by mosquitoes that affects millions of people in Africa, Asia, and South America.
Chagas disease: A parasitic disease caused by the Trypanosoma cruzi parasite that is found in Latin America and affects millions of people.
Schistosomiasis: A parasitic disease caused by a type of flatworm that affects millions of people in sub-Saharan Africa, South America, and Southeast Asia.
Dengue fever: A viral disease transmitted by mosquitoes that affects hundreds of millions of people in tropical and subtropical regions.
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A scientist has found a protein that is involved in an important chemical
reaction. She sets up two tests: one with the protein and one without the protein.
What should she measure to determine whether the protein is an
enzyme?
O The amount of products bound to the active site
The amount of protein consumed
O The rate of the chemical reaction
O The temperature change of the reaction
Answer:
The rate of the chemical reaction
Explanation:
The rate of the chemical reaction is the key measurement that the scientist should make to determine whether the protein is an enzyme. This is because enzymes are biological catalysts that increase the rate of chemical reactions without being consumed themselves in the process. By comparing the rate of the chemical reaction in the presence and absence of the protein, the scientist can determine whether the protein is acting as an enzyme and thus playing a role in the reaction.
Which is the first step that geologists must do to compare rock layers at distant locations?
Answer:
compare a layer at one location to layers at other locations
Explanation: took the quiz
In a baseball game, joseph hits a ball to the outfield. When does the ball have the most potential energy?.
Answer: When the ball is at its highest point, it has potential energy. When the ball is falling towards the table, it has kinetic energy. It has the most kinetic energy at the very end of its descent when it is moving the fastest.
Explanation:
Select the correct answer. Simplify the following expression. (4x + 7)2 a. 16x2 - 49 b. 16x2 + 56x + 49 c. 16x2 + 28x + 49 d. 16x2 + 49.
To simplify the expression (4x + 7)2, we need to apply the formula for squaring a binomial
Step 1: Identify the values of a and b in the formula[tex](a + b)2.[/tex]
In this case, a = 4x and b = 7.
Step 2: Substitute the values of a and b into the formula and simplify.
[tex](a + b)2 = a2 + 2ab + b2(a + b)2 = a2 + 2ab + b2[/tex]
where a = 4x and b = 7.
Substituting these values into the formula, we get:
[tex](4x + 7)2 = (4x)2 + 2(4x)(7) + 72[/tex]
[tex]= 16x2 + 56x + 49[/tex]
Therefore, the correct answer is (b) [tex]16x2 + 56x + 49.[/tex]
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229771af467a5e... 1/2 | 87% + 1 H 1. List two parts of a prokaryote that are also in plant or animal cells? (2) 2. A type of bacteria that causes pneumonia is Pneumococcus. Which part of the name tells you the shape? What is a common English word that would describe the shape of this bacteria? (2) 3. Why is knowledge about cyanobacteria important? List two reasons. (2) 4. Why is knowledge about bacteria such as salmonella or e-coli important? List two reasons. (2) 5. What is the name of the process that allows bacteria to reproduce? (1)
Answer:
Two parts of a prokaryote that are also found in plant or animal cells are the cell wall and the ribosomes.
The word "Pneumococcus" tells you the shape of this bacteria. The word "coccus" is derived from the Greek word for "sphere" and it refers to the spherical shape of this bacteria. A common English word that would describe the shape of this bacteria would be "round".
Knowledge about cyanobacteria is important because they are the oldest known form of life on Earth, and they produce oxygen through photosynthesis, which is necessary for the survival of many other organisms. Additionally, cyanobacteria are an important source of biofuel.
Knowledge about bacteria such as salmonella or e-coli is important because these bacteria can cause food poisoning if consumed, and can also spread from person to person through physical contact or through contact with contaminated surfaces.
The process that allows bacteria to reproduce is called binary fission
If left alone, vines can eventually ‘choke’ a tree from getting the sunlight it needs to survive. What is the best description for this relationship?
A. Consumer - consumer
B. Producer - Consumer
C. Predator - Prey
D. Parasite - Host
Answer: D. Parasite - Host
Explanation:
The vines are taking the nutrients away from the tree, but not necessarily consuming the tree
Organisms exhibit different types of adaptations as a means of survival. What type of adaptations do the caterpillar and the plant show in this interaction?
The green color of the caterpillar is an example of a _____ adaptation to avoid predators, while the release of bioactive chemicals by the plant to protect itself from the insect’s attack is a ______ adaptation.
Answer: The green colour of the caterpillar is an example of a structural adaptation to avoid predators, while the release of bioactive chemicals by the plant to protect itself from the insect's attack is a physiological adaptation.
The green color of the caterpillar is an example of a structural adaptation to avoid predators, while the release of bioactive chemicals by the plant to protect itself from the insect's attack is a physiological adaptation.
Microbes, plants, and animals all live in surroundings that may alter to become drier, hotter, colder, more acidic, darker, and sunnier – with an almost unlimited number of variations.
Organisms have genetic benefits, such as a mutation that helps them survive the new environment, transmit the change down to their progeny, and the change becomes common enough in the population to be manifested as an adaptation.
Adaptations are key attributes that allow species to survive in their environments. There are three basic types of adaptations: structural, physiological, and behavioral.
Most creatures have a blend of all of these categories.
Structural adaptations are changes to the way an animal's body operates or appears on the outside. Body components (such as feet and ears) and body coverings (such as fur and scales) are examples of structural adaptations.
The interior workings of an animal's body are referred to as physiological adaptations. This involves changes in an animal's cells, molecules, and processes.
Behavioral adaptations describe how an animal behaves. This covers activities such as sleeping and conversing.
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what is endometrium ?
The endometrium is the inner lining of the uterus, which is a female reproductive organ.
What is the role of the endometrium?It is a highly vascularized tissue that undergoes cyclic changes in response to hormonal signals from the ovaries. Every menstrual cycle, the endometrium thickens in preparation for a potential pregnancy, and if pregnancy does not occur, the endometrium is shed in the form of menstrual bleeding.
In addition to its role in fertility and menstruation, the endometrium is also involved in implantation of a fertilized egg and the growth and nourishment of the developing fetus during pregnancy.
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after during the activity, give your own definition of culture
Which government agency is responsible
for enforcing RCRA?
A. USGS
B. EPA
C. NPS
D. NOAA
Answer:
The government agency responsible for enforcing RCRA (the Resource Conservation and Recovery Act) is the Environmental Protection Agency (EPA). The EPA is a federal agency that works to protect human health and the environment by regulating and enforcing various environmental laws and regulations, including RCRA. The EPA's mission is to ensure that all Americans have access to clean air, land, and water, and that they are protected from environmental hazards and risks.
Explanation:
what are the factors that influence the development of fishing industries
What can humans do to make the renewable forest resources last longer?
Answer:
Sustainable forestry practices: This involves using techniques such as selective logging and reforestation to ensure that forest resources are used in a responsible and sustainable manner, without damaging the ecosystem.
Protection of forests: Protecting forests from illegal logging, fires, and other forms of destruction can help to ensure that these resources remain intact for future generations.
Reduced deforestation: Deforestation is a major contributor to the loss of forest resources, so reducing deforestation is crucial in maintaining forest cover. This can be achieved by promoting sustainable agriculture and other land-use practices that reduce the need to cut down forests.
Efficient use of forest products: Making more efficient use of forest products, such as paper and wood, can reduce the amount of resources required and help to extend their lifespan.
Increased reforestation: Planting new trees can help to replace those that have been lost, and increase the overall forest cover.
Restoration of degraded forests: Restoring degraded forests can help to rebuild the health of these ecosystems and support the recovery of forest resources.
Explanation:
Answer:
Reducing the use of forest resources can enable humans to make it last longer.
Explanation:
A reduction in the use of forest resources can help with the mitigation process. Mitigation can be defined as the reduction of loss during any natural disaster. Forest is a rich source of oxygen, so we have to be very careful about the conservation of forest resources. It also serves numerous others functions like it can be used as a shelter for different animals and birds. We have to minimize the use of forest products.
Indicate the expected number of Barr bodies in interphase cells of individuals with the following karyotypes.1. 46 XY
2. 45 XO (Turner's syndrome)
3. 47 XXX
4. 48 XXYY
The expected number of Barr bodies in interphase cells of individuals with the following karyotypes: In 46 XY Barr bodies is 0, In 45 XO Barr bodies is 1, In 47 XXX Barr bodies is 2, and In 48 XXYY Barr bodies is 1.
Barr bodies are inactivated X chromosomes found in female mammals. The number of Barr bodies in interphase cells depends on the number of X chromosomes in the cell.
46 XY: This is the normal male karyotype, which has one X chromosome and one Y chromosome. Since males only have one X chromosome, they do not have Barr bodies in their interphase cells. The expected number of Barr bodies in this karyotype is 0.
45 XO (Turner's syndrome): This karyotype is a female with only one X chromosome. In this case, the single X chromosome will become the Barr body. The expected number of Barr bodies in this karyotype is 1.
47 XXX: This karyotype is a female with three X chromosomes. In this case, two of the X chromosomes will become Barr bodies, and one will remain active. The expected number of Barr bodies in this karyotype is 2.
48 XXYY: This karyotype is a male with two X chromosomes and two Y chromosomes. Since males only need one X chromosome, one of the X chromosomes will be inactivated and become a Barr body. The expected number of Barr bodies in this karyotype is 1.
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How fast are you moving relative to the chair relative to the Sun?
The answer to the question of how fast you are moving relative to the chair relative to the Sun would be the same, as you and your chair are effectively moving at the same speed as the Earth.
However, if we assume that you are sitting in a chair and ask how fast you are moving relative to the Sun, the answer would depend on the reference frame. From the perspective of someone standing on the Sun, the Earth (and therefore you and your chair) is moving in an elliptical orbit around the Sun at an average speed of about 30 kilometers per second (67,000 miles per hour). From the perspective of someone standing on the Earth, you and your chair are stationary (ignoring the rotation of the Earth) while the Earth is rotating on its axis and orbiting the Sun at the same speed mentioned above.
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Which of the following claims best explains why keratinocytes do not produce melaninChoose matching definitiona. The TYRTYR, TRP2TRP2, and TRP1TRP1 genes may be located on different chromosomes but are activated by the same transcription factor.b. Keratinocytes do not express the MITFMITF gene.c. A knock-out mutation results in a total absence of the mutated protein. A knock-out mutation refers to the loss of a protein's function but not necessarily to its complete absence.d. Deletion.The original sequence has lost the base C.
The TYRTYR, TRP2TRP2, and TRP1TRP1 genes may be located on different chromosomes but are activated by the same transcription factor. Thus, the correct option is A.
What are Keratinocytes?Keratinocytes represent the major cell type of the epidermis layer of cells, the outermost layers of the skin, it has been found to making up to about 90 percent of the cells in the body. Keratinocytes originate in the deepest layer of the epidermis, the stratum basal and also move up to the final barrier layer of the skin, which is the stratum corneum.
The interaction of keratinocytes and the melanocyte cells is also crucial for the homeostasis of the epidermis layer of cells. Melanocytes are the cells which produce melanin pigment, which absorbs ultraviolet waves and prevents DNA damage to the keratinocytes. Keratinocytes do not produce melanin because these cells do not contain the TYRTYR, TRP2TRP2, and TRP1TRP1 genes.
Thus, the correct option is A.
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Which sectioning technique would cut the wrist cleanly away from the shoulder at the elbow?
Keat is describing the conditions on early Earth. Which line contains an error? (4 points)
Atmosphere has low levels of oxygen, and prokaryotic cells use anaerobic respiration.
Carbon dioxide builds up, and autotrophs evolve and begin producing oxygen.
Increased nitrogen levels kill off most anaerobic cells.
Aerobic autotrophs and heterotrophs become the dominant life forms.
Line 1
Line 2
Line 3
Line 4
6. How is prokaryote reproduction similar to mitosis? How is it different? (2) 7. A scientist is studying a type of thermophilic prokaryote. Are these most likely archaea or bacteria? How do you know? (2) Part 2: Eukaryotes 8. What two features do algae have that make them like plant cells? (2) 9. Why do you think scientists had problems deciding if euglenoids were more similar to plants or animals? (2)
Prokaryote reproduction is similar to mitosis in that it involves the replication and division of the genetic material, followed by cell division.
Explaining Procaryotes, and answers to other parts of the questionProkaryote reproduction is similar to mitosis in that it involves the replication and division of the genetic material, followed by cell division. However, prokaryotes do not have a nucleus, so the process is simpler and does not involve the formation of a mitotic spindle or the separation of chromosomes into daughter nuclei.
Thermophilic prokaryotes are most likely archaea, as they are known to thrive in extreme environments such as hot springs and deep-sea vents, whereas bacteria are more commonly found in moderate environments.
Algae have two features that make them like plant cells: they contain chloroplasts for photosynthesis and have a cell wall made of cellulose.
Scientists had problems deciding if euglenoids were more similar to plants or animals because they possess characteristics of both groups. Like plants, they have chloroplasts and can perform photosynthesis, but like animals, they can move using a flagellum and can consume other organisms for nutrients. This led to some debate about how to classify them, but they are now generally considered to be a type of protist.
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What iS one reason scientists have developed a system to classify organisms?
Classification allows for organisms to interbreed and change.
A system was needed to better
track genetic changes in an organism.
Classification allows for better identification of new organisms.
A system was needed to see microscopic organisms with more detail.
Answer:
Classification allows for better identification of new organisms
1.If a person moved from San Pedro, CA (112' elevation) to Big Bear, CA (6,752' elevation) how would that affect cellular respiration for this person? *higher elevation = less oxygen
2.Jack is running a marathon. He is halfway through and is exeriencing muscle fatigue, rapid breathing and pain in his thigh muscles. What is happening to his ceullular repiration process? Which type of cellular respiration is his body completing? Why? Why is he experiencing those symptoms?
1. At higher elevations, the air is thinner and contains less oxygen, which can affect cellular respiration.
What do you mean by respiration?
Respiration is the process by which organisms take in oxygen and release carbon dioxide as a byproduct of the chemical reaction that produces energy for the body. It is a vital part of life for all organisms, as it helps to convert glucose into energy for the body to use.
This means that the person would require more energy and oxygen to perform the same amount of work as they would have at lower elevations. The person would also have to adapt to the decreased oxygen levels in order to maintain their energy levels.
2. Jack's body is undergoing anaerobic respiration. This is the type of cellular respiration that occurs when the body is using up its oxygen reserves and needs to generate energy without oxygen. The body relies on glucose stores to generate energy without oxygen, resulting in the production of lactic acid as a byproduct. The lactic acid builds up in the muscles and causes the muscle fatigue, rapid breathing, and pain that Jack is experiencing.
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Put the following in order from smallest to largest:
Giardia lamblia protozoa (7µm)
Bacterial Plasmids (20nm)
Mastadenovirus (30nm)
Cionorchis sinensis trematode (5mm)
Gram-pos bacteria (6µm)
All together from littlest to biggest: Bacterial Plasmids (20nm)<Mastadenovirus (30nm) < Gram-pos microscopic organisms (6µm) < Giardia lamblia protozoa (7µm) < Cionorchis sinensis trematode (5mm)
Anything more modest than 200 nm can't communicate with noticeable light. Losing on the stage is excessively simple. Noticeable light is just great at frequencies under 390 nm.
Objective Focal point or Mathematical Opening This piece of a compound magnifying instrument is the focal point nearest to the example.
The level stage is where you place your slides. Stage cuts hold the slides set up. Spinning Nosepiece or Turret: This is the part that holds at least two objective focal points and can be pivoted to change power without any problem.
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Question 4 of 10
A scientist performed an experiment to learn how the thickness of a piece of
wood affects its ability to support weight without breaking. The scientist
prepared three different pieces of wood and applied weight until they broke.
What is the responding variable in this experiment?
OA. The breaking weight
OB. The number of pieces of wood
O C. The type of scale used to measure the weight
O D. The thickness of the wood
The responding variable in this experiment is the breaking weight.
The correct option is A.
What is a responding variable in an experiment?In an experiment, a responding variable, also known as a dependent variable, is a variable that is measured or observed to determine the effect of the independent variable. The value of the responding variable may change as a result of changes in the independent variable.
For example, in an experiment to learn how the thickness of a piece of
wood affects its ability to support the weight without breaking. The scientist prepared three different pieces of wood and applied weight until they broke, the responding variable is the breaking weight.
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A mutation occurs in a sequence of dna. How could the dna mutation affect the protein produced?.
A mutation that changes information in a gene responsible for the production of a protein, could result in the production of another protein or make the gene produce no protein at all.
What is mutation?A biological mutation is an alteration to the nucleic acid sequence of the genome of an organism, virus, or extrachromosomal DNA. Mistakes in DNA replication, viral replication, mitosis, meiosis, or other sorts of DNA damage that may then be repaired in a mistake-prone way result in mutations (especially microhomology-mediated end joining)
A mutation may or may not have an impact on the phenotype—the observable characteristics—of an organism. Among the healthy and unhealthy biological processes in which mutations participate are evolution, cancer, and the maturation of the immune system, including junctional variation. Mutation is the source of all genetic variation, and it also serves as the rationale for the operation of evolutionary forces like natural selection.
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Chaz and Bev both have heterozygous genotypes for their tongues
If Chaz and Bev both have heterozygous genotypes (Rr) for their tongues rolling, if they crossed with each other, the possible genotypes of their offspring are RR, Rr, Rr, and rr.
What is a genotype?Genotype may be characterized as the ultimate combination of alleles of those genes which are significantly studied for specific objectives in order to determine traits based on that.
A person with the Rr genotype for tongue rolling would be capable to roll his or her tongue, because he or she has the dominant allele that allows tongue rolling. So “tongue rolling” is his or her phenotype.
The phenotype of the offspring would certainly depend on the genotypes on the basis of their parental attributes. If both parents are heterozygous for any trait, their offspring would show dominant, recessive, and heterozygous genotypes.
Therefore, if Chaz and Bev both have heterozygous genotypes (Rr) for their tongues rolling, if they crossed with each other, the possible genotypes of their offspring are RR, Rr, Rr, and rr.
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Your question seems incomplete. The most probable complete question is as follows:
Chaz and Bev both have heterozygous genotypes for their tongues rolling, if they crossed with each other, what are the probable genotypes of their offspring?
The principle of heredity discovered by Mendel states that each diploid individual has two alleles at one locus and these two alleles separate when gametes are formed, one allele enters each gamete. It's called principle?
One of the Mendelian Laws of Inheritance, the Law of Segregation states that the two alleles in a pair separate during gamete production. During anaphases I and II of the meiosis process, Mendel's Segregation Law is put into practise.
Most alleles that have been observed have little to no effect on how well their gene product, for which they encode, works. A range of colours is one independent phenotypic trait that can be periodically produced by various genes. A notable example of this is Gregor Mendel's discovery that the white and purple flower colours in pea plants were caused by a single gene with two alleles. The homologous chromosomes are sorted into two daughter nuclei with their individual versions of each gene during this stage of the first meiotic division. An organism's gametes each contain a single gene copy that is selected at random. The law of segregation is another name for it.
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Which of the following describes how the San Andreas Fault formed on Earth at a transformed boundary?
© Plates moved in closer
• Plates moved away from each other
• Plates slid past each other
• Plates moved with each other in the same direction
Plates moved in closer is best describes how the San Andreas Fault formed on Earth at a transformed boundary. Thus, option A is correct.
What is convergence?The convergence has been known as the a process where both the plates tend to move in closer as one plate overrides the other and the formation of a Himalayas has been described as the range that formed by the movement of the sediments that were bought by the Tethys sea.
Transform boundaries has been forms when the plates has slide past each other. Divergent boundaries has been formed when they moves away from each other. Convergent boundaries forms when the plates move toward each other.
Therefore, Plates moved in closer is best describes how the San Andreas Fault formed on Earth at a transformed boundary. Thus, option A is correct.
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2. Which of the following are possible results of mutated genes? (Choose all that apply)
. minimal effect
beneficial effect
harmful effect
no effect
Answer:
All of the above
Explanation:
Genetic mutations are changes to your DNA sequence that happen during cell division when your cells make copies of themselves. Your DNA tells your body how to form and function. Genetic mutations could lead to genetic conditions like cancer, or they could help humans better adapt to their environment over time
Some mutations don't have any noticeable effect on the organism. This can happen in many situations: perhaps the mutation occurs in a stretch of DNA with no function, or perhaps the mutation occurs in a protein-coding region, but does not affect the amino acid sequence of the protein.
what is koilocytosis
Koilocytosis is the term used to describe the conclusion of particular cellular processes brought on by human papillomavirus infection (HPV)
What is Koilocytosis in detail?Koilocytosis is a histological term that refers to the changes that occur in the appearance of the cells that line the cervical transformation zone, which is a part of the cervix. It is characterized by the presence of small cytoplasmic vacuoles, or "hollows," that give the cells a fragmented or "blown up" appearance.
Koilocytosis is often seen in cervical cells that are infected with certain strains of the human papillomavirus (HPV), particularly the high-risk HPV types that can cause cervical cancer. The presence of koilocytosis can indicate a potential precancerous condition and may warrant further evaluation and treatment.
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An initial characteristic symptom of a simple pneumothorax is a sudden onset of chest pain. True or False
An initial characteristic symptom of a simple pneumothorax is a sudden onset of chest pain the given statement in the question is true.
A pneumothorax is a collapsed lung. A pneumothorax occurs when air leaks into the space between your lung and chest wall. This air pushes on the outside of your lung and makes it collapse. A pneumothorax can be a complete lung collapse or a collapse of only a portion of the lung.
A pneumothorax can be caused by a blunt or penetrating chest injury, certain medical procedures, or from underlying lung disease. Or it may occur for no obvious reason. Symptoms usually include sudden chest pain and shortness of breath. On some occasions, a collapsed lung can be a life-threatening event.
An initial characteristic symptom of a simple pneumothorax is a sudden onset of chest pain. This may be accompanied by shortness of breath, rapid heart rate, and decreased lung function on the affected side.
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