Answer:False. Tetracycline is not effective against viruses because it targets bacterial ribosomes, not viral ribosomes.
Tetracycline is a broad-spectrum antibiotic that inhibits protein synthesis by binding to bacterial ribosomes and preventing the attachment of aminoacyl-tRNA molecules to the ribosomal acceptor site. However, viruses do not have ribosomes, and instead rely on host cell machinery to produce proteins. Therefore, tetracycline has no effect on viral protein synthesis and is not used to treat viral infections.
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What is poor flexibility caused by?
Many variables affect the loss of normal joint flexibility including injury, inactivity or a lack of stretching. The range of motion will be influenced by the mobility of the soft tissues that surround the joint. These soft tissues include: muscles, ligaments, tendons, joint capsules, and skin.
At the end of anaphase I how many chromosomes are on each side?
Answer:
23
Explanation:
At the conclusion of anaphase, each end of the cell has an identical and complete set of 46 chromosomes or 23 pairs of homologous chromosomes; they are still diploid. Telophase: Telephase begins once the chromosomes have completed separating and reached the opposite poles of the cell.
Commercial meat tenderizer often contain papain, a proteolytic (protein-digeting) enzyme. How might uch product make meat more tender?
The fruit papaya includes the enzyme papain, which aids in the breakdown of proteins by severing the bonds between amino acids, gradually softening the meat.
As a result, it is perfect for use as a meat tenderizer because its enzyme gives meat a softer texture and more flavor. Meat would become more soft thanks to a protein-digesting enzyme that would reduce lengthy, fibrous protein chains into smaller protein chains. An enzyme will accomplish the same type of cutting, but on a smaller scale, just as repeatedly piercing a tough piece of meat with a fine blade will cut long protein strands into shorter, more delicate fibres.
Papaya and a few other plants contain the protein-cleaving enzyme known as papain. Complex molecules called enzymes are created by living things to catalyze (fast-track) chemical reactions inside of cells.
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Write a short story using the vocab words: DNA, Alleles, genes, chromosomes.
Answer:
Dna Is a double stand made of two stands twist together
Explanation:
alleles is the alternative form of genes
genes are small section of dna
chromosome long.thread like structure which carries genetic information
If you put a red blood cell into a glass of pure water, what would happen?
When red blood cells are placed into a solution with higher concentration as compared to their contents (eg pure water) will gain water by osmosis, burst and swell up.
Osmosis is termed as the net movement of water across with semipermeable membrane. This across of membrane, water will moves from an area of higher concentration to lower concentration.
If red blood cells are placed in water, then water enters the cell by osmosis. Because the membrane is quite very weak the cell will burst as the volume and therefore the pressure in the cell will increases. Red blood cells shrink when it placed in the concentrated solutions of sugar as water moves out of them by the osmosis.
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How often is it recommended that adults get at least 30 minutes of vigorous physical activity a week?
Get at least 150 minutes (for instance, 30 minutes a day, five days a week) of aerobic exercise of a moderate intensity per week.
And Participate in muscle-strengthening exercises involving all major muscle groups at least twice each week.
The more physical exercise you engage in, the more benefits there will be for your health. a minimum of 150 minutes per week for instance, 30 minutes per day, five days per week of moderate intensity exercise like brisk walking. Or they require 75 minutes per week of intense action like jogging, running, or mountaineering.
Older persons should be as physically active as possible even if they are unable to complete 150 minutes of weekly moderate-intensity aerobic activity (for instance, 30 minutes five days a week).
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What is an important function of mitochondria (the powerhouse of the cell)?
converting sunlight into energy in ATP
converting glucose (sugar) into chemical energy in ATP
converting sunlight into glucose
Answer:
option b is correct pls mark brainliest if u r girl
How do forensic investigators use insect activity to determine tod?
Forensic scientists can determine the cause of death, the postmortem index, and any changes in the position of the corpse by observing the insect population and its developing larval stages.
How can this stage of breakdown be determined by insect activity?As decay progresses more quickly, more blowflies, beetles, and mites are drawn to the body by the odors and bodily fluids that start to leak from it. The predatory flies and beetles that arrive later consume both the decomposing flesh and maggots.
Which forensic entomology technique can he employ to establish the moment of death?Since other forensic techniques are equally or more accurate before this point than the bug evidence, the majority of cases involving a forensic entomologist are 72 hours or older.
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Can someone help me before I leave class
Answer:
Explanation:
atp
Pretend you are MEIOSIS. Write a letter to your body letting it know how important MEIOSIS is for your body to function and carry out life. You must include the following words: gametes, haploid, diploid, chromosomes, crossing-over, fertilization.
The letter to my body letting it know how important MEIOSIS is for your body to function and carry out life is given below
The letterDear body,
I am writing to remind you of the crucial role I, Meiosis, play in your function and ability to carry out life. Without me, the process of creating genetically diverse gametes, the cells responsible for fertilization, would not be possible.
As you may know, my primary function is to reduce the number of chromosomes in a cell from the diploid number to the haploid number. This process, also known as cell division, is essential for the formation of healthy and viable gametes. Without the reduction of chromosomes, fertilization would not occur and the continuation of life would be impossible.
During my process, genetic diversity is also increased through the process of crossing-over, in which genes from different chromosomes can be exchanged. This leads to the formation of unique combinations of genetic information in each gamete, which is vital for the survival of future generations.
In short, my role in your body is to ensure the creation of healthy and genetically diverse gametes through the reduction of chromosomes and the process of crossing-over. Without me, fertilization and the continuation of life would not be possible. Please remember to take good care of me and the cells that I work with.
Sincerely,
Meiosis
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What is the number of nitrogen molecules that reacted with excess hydrogen to make 2 x 1010 molecules of ammonia?.
The number of nitrogen molecules that react with excess hydrogen to produce 2x10^10 ammonia molecules is 1×10¹⁰.
Stoichiometry is the calculation of a balanced chemical equation that determines the ratio between reactants and products in a chemical reaction.
Equilibrium in chemical equations obeys conservation principles and Dalton's model of the atom, such as the Law of Conservation of Mass, which states that:
mass of reactants = mass of products
In this sense, the equation must have equal weight on both sides of the equation.
In terms of reactions, both are in equilibrium 3H₂ + N2 ⟷ 2 NH₃
If 1 molecule of nitrogen produces 2 molecules of ammonia
2 x 10¹⁰ ammonia molecules will be produced if 2 x 10¹⁰ × 1/2= 1 × 10¹⁰ molecules.
So, the number of susceptible nitrogen molecules is 1 × 10¹⁰.
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2. Agarose gel is used to in electrophoresis. Molecules that are small move _______ than large molecules. (1pt)
Answer:
Agarose gel electrophoresis is commonly used to separate DNA fragments following a restriction digest or PCR amplification. Fragments are detected by staining the gel with the intercalating dye, ethidium bromide, followed by visualization/photography under UV light.
Which a round body that contains dna and regulates gene expression
A round body that contains DNA and regulates gene expression is the nucleus.
What is a nucleus?The nucleus is а membrаne-enclosed orgаnelle found in most eukаryotic cells. The nucleus is the lаrgest orgаnelle in the cell аnd contаins most of the cell's genetic informаtion (mitochondriа аlso contаin DNА, cаlled mitochondriаl DNА, but it mаkes up just а smаll percentаge of the cell’s overаll DNА content). The genetic informаtion, which contаins the informаtion for the structure аnd function of the orgаnism, is found encoded in DNА in the form of genes.
The function of the nucleus is to mаintаin the integrity of these genes аnd to control the аctivities of the cell by regulаting gene expression. Gene expression is the process by which the informаtion in а gene is "decoded" by vаrious cell molecules to produce а functionаl gene product, such аs а protein molecule or аn RNА molecule.
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What value would be returned in Excel cell A49?
In MS Excel, the returned value from cell A49 is 4, which is based on the "count" function.
In MS Excel, a count function is used to calculate the number of entries in a cell or the number of fields that meet a predefined value set by the user.
In the given picture, 'NP*' is the predefined value that is set by the user, and therefore the value that would be returned in cell A49 based on the formula "[=COUNTIF(A43:A47, "NP*")]" is 4. It is because the calls A43, A44, A45, and A46 are containing the value "NP."
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It is question that you are trying to seek answer or solve in a scientific method?a. hypothesisb. materialsc problemd. variables
Option a. hypothesis is question that you are trying to seek answer or solve in a scientific method.
A theory proposed to explain a fact is known as a hypothesis. A hypothesis cannot be a research hypothesis unless it can be tested using the research methodology. Research hypotheses are frequently founded on earlier results that the existing body of knowledge is unable to adequately address.
The variable which the scientist modifies or manipulates in an investigation is known as the independent variable. The observed reaction is the dependent variable. The dependent variable is based on the variation in the independent variable, to put it another way.
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The process of genetic engineering usually involves altering the dna of an organism so that.
Changing an organism's DNA in order to transfer the resulting hybrid DNA into the organism to create new microbial genetic combinations.
How is DNA altered for genetic engineering purposes?DNA is inserted into an organism's genome as part of the GM technology. New DNA is introduced into plant cells to create a GM plant. The cells are typically cultured in tissue culture after which they transform into plants. The modified DNA will be passed along to the seeds that these plants generate.
What does genetic engineering serve?The goal of genetic engineering is to alter the genes to increase the organism's capabilities beyond what is typical. The potential application of both of these technologies in nonhuman animals and plants has generated ethical debate.
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Which feed is mostly eaten by birds?
Answer:
worms, seeds, some nuts, other small animals if the bird is bigger, berrys
Which of the following forms of cellular transport is being illustrated below?
The form of cellular transport is being illustrated below in the given diagram is known as exocytosis.
What is Cellular transport?Cellular transport may be defined as the process of movement of substances across the cell membrane either into or out of the cell. Cell transport includes passive and active transport. Passive transport does not require energy whereas active transport requires energy to proceed.
Exocytosis is the process through which cells move materials from within the cell into the extracellular fluid. It significantly occurs when a vesicle fuses with the plasma membrane, allowing its contents to be released outside the cell.
Therefore, the form of cellular transport is being illustrated below in the given diagram is known as exocytosis.
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An atom of iron has an atomic number of 26 and a mass number of 56. How many protons plus neutrons are in the nucleus?.
The number of protons in an atom is also referred to as the atomic number, so an atom of iron has 26 protons in its nucleus. The mass number of an atom is the sum of the number of protons and neutrons in the nucleus. So, to find the number of neutrons in the atom, we can subtract the number of protons (26) from the mass number (56):
56 - 26 = 30 neutrons.
So, the number of protons plus neutrons in the nucleus is:
26 protons + 30 neutrons = 56.
Pls help 35 points dont look in the internet
contrast how is facilitated diffusion from active transport
Answer:
join
Explanation:
dab-uwgx-xcg the world of Hindi
Warm air rises because:
Question 7 options:
It is made of helium
As it warms the particles spread out making it less dense
As it warms the particles get closer together making it more dense
Air always moves towards the sun or moon due to gravity
Answer:
helium
Explanation:
balloon
The pedigree suggests that the gene is on a nuclear chromosome, and not on mitochondrial DNA, because
Given that maternal mitochondrial mutations are transmitted by all of a mother's offspring, the pedigree shows that the gene is on a nuclear chromosome rather than a mitochondrial DNA.
What distinguishes nuclear DNA from mitochondrial DNA?The majority of cellular operations are carried out by nuclear DNA, which is DNA found in the nuclei of cells. The form of nuclear DNA is very different from that of mitochondrial DNA, which is related to animals, plants, and fungi.
Why is nuclear DNA better than mitochondrial DNA for our needs?In contrast, nDNA is more conserved than mtDNA, especially the nuclear rRNA genes. The highly conserved sequences in nuclear rRNA genes make them a potentially valuable source of genetic markers for resolving higher taxonomic levels for species.
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During ___________, the cell grows, makes a DNA copy, and prepares to split into two cells
Answer:
Interphase
Explanation:
Ronald pushes a box up an inclined plane with 35% efficiency. If 224 joules of energy went into moving the box, how much energy did ronald put into the inclined plane?.
Energy put into the inclined plane is 640 joules.
How would you define efficiency?The ability to do a task with little to no waste, effort, or energy is referred to as efficiency. Being effective is using the resources you have as effectively as possible to attain your goals. Simply put, if there is no wastage and all procedures are optimizer, something is efficient.
What does "work efficiency" mean?When employees complete the proper jobs in the proper manner with the least amount of time and effort wasted, they are being efficient. Ultimately, increasing workplace productivity involves assisting workers in doing more with less.
Solution:-
Ronald applied 640 joules of energy to the inclined plane.
How to calculate the energy input
Efficiency, as we all know, is the ability to complete a task with little to no waste. In mathematics, it can be written as
Efficiency is defined as (output / input) 100.
The input energy can be found using the formula above as follows:
224 joules equal output work
35% efficiency
Work entered =?
Efficiency is defined as (output / input) 100.
35% = 224 / input
0.35 = 224 / input
multiply by cross
0.35 × input = 224
Add 0.35 to both sides.
Work input = 224 / 0.35
Work input = 640 joules
The energy input is 640 joules as a result.
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:
Which best describes a correct order of the water
cycle?
A. precipitation, runoff, condensation,
evaporation, precipitation
B. precipitation, runoff, evaporation,
condensation, precipitation
C. precipitation, evaporation, condensation,
runoff, precipitation
D. precipitation, evaporation, runoff,
condensation, precipitation
!
Answer:
B. precipitation, runoff, evaporation, condensation, precipitation.
Explanation:
A is incorrect because in order for the water to get to the point of condensation, it needs to be evaporated into the clouds. B is correct because the first thing that needs to happen is for precipitation to occur. Then, the precipitation can become runoff and wait in a puddle, lake, ocean, etc. The precipitation is then evaporated into the clouds, where it condenses and the process starts all over. C is incorrect because in order for the precipitation to be evaporated again, it needs to run down the sides of things and gather somewhere to wait. Then, it can be evaporated. D is incorrect because it is impossible for precipitation to be evaporated before it can be one runoff. Therefore, the order is wrong.
Hope this helps! :)
In Australia, for example (where our study was performed), many of the birds can fly great distances, sometimes across the whole of Australia, often because of unpredictable weather. Birds in other parts of the world where the weather is more predictable, such as England and America, do not have to fly such long distances.
1. Observation
2. Question
3. Hypothesis
4. Collect Evidence
Which characteristic of life is demonstrated by the chemical reactions in a snake's body to produce venom?
homeostasis
metabolism
growth and development
response
The characteristic of life that is demonstrated by the chemical reactions in a snake's body to produce venom is b. metabolism (and then response).
What is the capacity of response in evolutionary terms?The capacity of response in evolutionary terms refers to the adaptative responses that a species have in order to face a challenging enviroment such as occurs in this case for the production of venom, which is a response to obtain foods in a very competitive enviroment (venom paralyze the prey in order to eat them during the coevolution between the prey and the depredator species).
Therefore, with this data, we can see that the capacity of response by metabolism in evolutionary terms is a type of ability that organisms have in order to obtain foods in an ever changing environment such as occurs in this case with the synthesis of venom by snakes.
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Due to their fertile soil, grasslands and estuaries are being used for which purpose?
Agriculture
Fishing
Manufacturing
Tourism
The purpose of estuaries are being used for agriculture.
What does an estuary serve as?In order to provide cleaner waters for people and marine life, estuaries filter out silt and impurities from streams and lakes before they run into the ocean.
Estuaries serve as free-standing filters. Runoff from the land can carry sediments, fertilisers, and pollutants into estuaries, where a natural filtration mechanism can help keep some of them from entering the water supply.
Benefits of estuaries:They serve as barriers, defending lands from storms and pounding seas.They aid in halting soil erosion.They absorb extra floodwater as well as tidal surges.They provide as crucial habitat for migratory birds, fish, and invertebrates of ecological and commercial importance.What are the top three benefits of estuaries?Estuaries are valuable from a business standpoint, and the resources they provide are profitable for the tourist, catching fish, and recreational industries. Estuaries, which provide harbours and ports essential for shipping and transit, also support significant public infrastructure in their protected coastal waters.
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Who was Charles Darwin and why was he important to the field of biology?
Darwin's greatest contribution to science is that he completed the Copernican Revolution by drawing out for biology the notion of nature as a system of matter in motion governed by natural laws. With Darwin's discovery of natural selection, the origin and adaptations of organisms were brought into the realm of science.
What are two characteristics of r-selected species?
These characteristics of R-selected species perfectly:
Rapid development. High reproductive rate. Early reproductive age. Small body size. One reproductive cycle. Short lifespan. Poor competitive ability. High mortality of offspring.What is r-selected species
r-selected species, also called r-strategist, species whose populations are governed by their biotic potential (maximum reproductive capacity, r). Such species make up one of the two generalized life-history strategies posited by American ecologist Robert MacArthur and American biologist Edward O. Wilson; K-selected species—that is, species whose population sizes fluctuate at or near their carrying capacity (K)—make up the second strategy.
The production of numerous small offspring followed by exponential population growth is the defining characteristic of r-selected species. They require short gestation periods, mature quickly (and thus require little or no parental care), and possess short life spans. Unlike K-selected species, members of this group are capable of reproduction at a relatively young age; however, many offspring die before they reach reproductive age.
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