What is dna replication?
Answers
Answer:
In DNA replication, cell machinery copies strands of DNA.
Explanation
DNAs, deoxyribonucleic acids, are long-chain, helical macromolecules made of specific sequences of covalently bonded monomers called nucleotides. These contain genetic information essential for growth, reproduction, and cell repair.
Nucleotide monomers are made up of, a 5-Carbon deoxyribose sugar, one nitrogenous base (adenine, guanine thymine, and cytosine) and a phosphate group.
Nucleotides, deriving their name from their nitrogenous bases, pair up to form base pairs. In base-pair formation, Adenine and Thymine form double bonds, while cytosine forms triple bonds with guanine...
DNA polymerase facilitates either DNA synthesis, by adding free nucleases to parent strands -these are first unwound and separated by helicases DNApolys synthesize DNA in 5'-3' direction; due to its restricted movement, there are only two modes of replication: continuous from the point of strand separation, the fork, and discontinuous from the fork. In continuous replication, DNApolymerase moves uninterrupted along the 3'-5 oriented template, adding nucleotides to the free hydroxyl group at its 3' end to produce the 5'-3' oriented leading strand. During the synthesis of the 3'-5' oriented lagging strand, DNApolymerase moves backwards along the template from the replication fork; DNA helicase separates the strands, and DNApoly's addition of nucleotides is periodically interrupted while forming discontinuous Okazaki fragments. Ligase enzymes assemble nucleotide strands of RNA and DNA -here, DNAligase assembles these fragments into continuous strands, producing two identical new helixes formed from a parent and newly replicated strand respectively.
Related Questions
1. Which of the following is the BEST description of forest soil?
A. thin humus layer, minerals deep beneath the surface.
B. thin humus layer, minerals close to the surface
C. very little humus, rich in minerals
D. very little humus, few minerals
2. Which of the following is not a fossil fuel?
A. oil
B. natural gas
C. coal
D. solar energy
Answers
Answer:
1. Thin Humus layer, minerals deep beneath the surface
2.Solar energy
Explanation:
I just took the test and got it right.
Answer:
1. A. Thin Humus layer, minerals deep beneath the surface
2. D. Solar energy
Explanation:
Therefore, out of the following, wood is NOT a fossil fuel. Oil, coal and natural gas are all resources made in the geological past from the remains of living organisms (fossils), meaning that they are all fossil fuels.
Describe the circumstances of a solar eclipse.
Answers
A solar eclipse happens when the Moon passes in front of the Sun and casts a shadow across Earth.
For a total eclipse to take place, the sun, moon and Earth must be in a direct line. The second type of solar eclipse is a partial solar eclipse. This happens when the sun, moon and Earth are not exactly lined up. The sun appears to have a dark shadow on only a small part of its surface.
A random mutation occurs and the GGA codon is changed to CGA. What effect does this
substitution have on the amino acid being called for? Explain your answer.
Answers
Answer:
The replacement of a base at a codon, as occurs when the GGA codon is changed to CGA, causes a change in the amino acid glycine to arginine.
Explanation:
Nitrogen base changes in a codon usually result from base changes in the DNA before transcription into messenger RNA, called point gene mutations.
In the case presented, the substitution of the guanine base by cytosine in the GGA codon —resulting in a CGA codon— generates a change in the coding amino acid, resulting in arginine instead of glycine.
The change of an amino acid in a peptide or protein can mean an alteration in the structure or function of these molecules.
Because an amino acid can be encoded by several codons, changes of a nitrogen base at a codon sometimes do not involve changes in the amino acid sequence of a protein.
The replacement of a base at a codon, as occurs when the GGA codon is changed to CGA, causes a change in the amino acid glycine to arginine.
Due to Base Substitutions Mutations.
What happens when a mutation changes a codon?
A nonsense mutation refers to a base substitution in which the changed nucleotide transforms the codon into a stop codon.
Such a modification leads to a premature termination of translation, which can badly affect the formation of proteins.
Thus, Base Substitutions Mutations take place.
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If grasshoppers were removed from this food web, which organism would suffer the most, the bird or the baboon?
Answers
Answer:
If the grasshoppers are removed from this ecosystem the bird will suffer the most.
Explanation:
On the presented food web we can see a food web that is complex and typical for the African savanna. As in all food webs, one organism is important for the survival of another organism or for the survival of numerous organisms. In this case, we have the grasshopper and its importance in the ecosystem, and which animal will be the most affected if it suddenly was not in this ecosystem anymore.
The bird and the baboon both feed on grasshoppers, but there is one big difference, and that is that the grasshoppers are the primary food source of the bird, while the baboon has other food sources as well. This means that with the grasshoppers being out of this ecosystem, the bird will have a very hard time surviving, and if it doesn't adapt quickly enough to feed on something else it will probably go extinct. The baboon, on the other hand, will be affected but not so dramatically as it will continue feeding on the other food sources, though it might suffer some smaller losses in its population.
If the grasshoppers are removed from this ecosystem the bird will suffer the most.
Why bird will suffer the most?The bird and the baboon both feed on grasshoppers, but there is one major difference, and that is that the grasshoppers are the primary food source of the bird, while the baboon has other food sources as well.
This signifies that with the grasshoppers being out of this ecosystem, the bird will have a very hard time surviving and if it doesn't adjust quickly enough to feed on something else it will probably go extinct.
Thus, birds will suffer the most.
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Which of the following is an example of haploid cells? cardiac cells nerve cells gametes muscle cells
Answers
Answer:
Gametes is an example of haploid cells.
Explanation:
Haploid cells are cells that contain a single complete set of chromosomes. Haploid cells in humans and other mammals, are usually the sex cells (egg and sperms) which are also called gametes that are produced during meiosis (a type of cell division). When the egg is fertilized by a sperm, it produces a diploid cell. Gametes contain 23 chromosomes in humans.
Which chemical is released by 2
WBC's that produces a non-specific inflammatory response?
Answers
Answer:
inflammatory cytokines
Explanation:
In host cellular defense systems, non-specific immune responses are integral. It is a general white blood cell-mediated reaction where cells respond quickly to pathogenic infiltration.
Here, receptors on cells detect or even respond to signals from damaged, injured or stressed cells- these signals, such as inflammatory cytokines in a cytokine storm of molecules, in response to signatures shared by a wide range of pathogens.
12. A hiker has become overwhelmed with heat while walking in the Grand Canyon. The hiker's body goes into overdrive to keep cool in the heat. The
hiker needs to hydrate his or her cells. What process is used to regulate homeostasis?
. A. Cellular transport
O B. Passive transport
O C. Balanced equilibrium
O D. Hydration
Answers
what is the fundamental unit of matter?
Answers
the atom is the fundamental unit of matter.
(hope this helps ^^)
what part of your home would be like the mitochondria of the cell?
Answers
Answer: the fuse box
Explanation: it powers all the electricity in the house
Answer:
The cell wall because it protects you.
Explanation:
These types of trees have their leaves modified into needles to help
reduce water loss?
Answers
Answer:
Coniferous trees
Explanation:
They are mainly found in cold regions
Why is cellular respiration called an aerobic process?
What are the products and the reactants for cellular respiration?
Where is most of the ATP made during cellular respiration?
What must happen in the cell’s cytoplasm before cellular respiration?
What process happens within the mitochondria as part of cellular respiration?
Answers
Answer:
1. cellular respiration called an aerobic process because it requires oxygen
2. products: Carbon dioxide, water, and ATP reactants:Glucose and oxygen
3. I don't know
4. I don't know
I hope i helped somewhat :)
The diagram below shows a sarcomere. If a disorder limits the number of
calcium ions that can bind to actin, what would happen to the sarcomere?
Myosin
Actin
phases
A. The myosin and actin would not separate, and the sarcomere
would remain contracted.
B. The myosin and actin would not separate, and the sarcomere
would be unable to contract.
C. The myosin and actin could not connect, and the sarcomere would
be unable to contract.
O D. The myosin and actin would not connect, and the sarcomere
would remain contracted.
No
Answers
Answer:
i would say C. but it is probably wrong. i don't really understand this stuff
The myosin and actin could not connect, and the sarcomere would
be unable to contract.
What is a sarcomere muscle?Sarcomeres are rather stereotyped and are repeated in the course of muscle cells, and the proteins inside them can trade-in periods, which reasons the overall length of a muscle to trade. A character sarcomere consists of many parallel actins (thin) and myosin (thick) filaments.
What is the difference between sarcomere and myofibrils?Myofibrils are composed of repeating sections of sarcomeres, which appear under the microscope as alternating dark and light bands. Sarcomeres are composed of long, fibrous proteins as filaments that slide beyond each other when a muscle contract or relaxes.
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How is free water different from solute bound water (the key concept)?
Answers
Answer:
Water that can be extracted easily from foods by squeezing or cutting or pressing is known as free water, whereas water that cannot be extracted easily is termed as bound water.
A strand of mRNA has the bases adenine-cytosine-uracil. Which amino acid
corresponds to these bases?
Answers
Answer:
ACU - Thr
Explanation:
apesc
Answer:
The answer would be Thr
Explanation:
A.P.E.X
Copies of chromosomes are called____
1) platelets.
2)sister chromatids.
3)stem cells.
4) macrophages.
Answers
Answer:
option 2
Explanation:
because there divide
What areas can act as carbon sinks?
the atmosphere
O the Arctic and Antarctic
O oceans, soils and forests
O all of these
Answers
Answer:
O oceans, soils and forests
Explanation:
A carbon sink absorbs carbon from the environment. They do not release carbon to the environment.
The atmosphere is a good carbon source since it contains a significant amount of carbon dioxide gas.
Carbon is found in the ocean in dissolved form. Soils are also good carbon sinks. Forest trees use carbon for their life processes One very integral process where carbon is used up is at photosynthesis. The carbon is used to make food materials.i need help with 5-10 please
Answers
Answer:
5. C. C6H12O6 + O2 ➡️CO2 + 02 + ATP
6. D. It breaks down glucose to form ATP.
7. D. All autotrophs are producers
8. D. All 4 statements are correct.
9. False
10. False
Explanation:
The process of photosynthesis converts carbon dioxide and water into glucose and oxygen while the in the process of cellular respiration, glucose and oxygen are converted to water and carbon dioxide and ATP is formed.
In photosynthesis, glucose is formed while in cellular respiration ATP is formed. The process of forming ATP and glucose are ways in which energy is cycled and oxygen cycle occur in the atmosphere. Energy can not be recycled but it is rather used. Only green plants carry out photosynthesis. Autotrophs are known to be primary producers.
Plz help me its only 1 question
Answers
Answer:
I think the awnser is C because before it goes into to the plant that eats nitrogen there is a bigger amount of it
Explanation:
Brainliest Please
Men who are kidnapped for human trafficking are usually held under debt bondage or _____.
soldiering
peonage
sex slavery
sex tourism
Answers
Answer:
It is Soldering not peonage
Explanation:
Peonage is what they do for Men not young boys.
Men who are kidnapped for human trafficking are usually held under debt bondage or peonage. Option B. This is further explained below.
What is peonage?Generally, Men who are kidnapped for human trafficking are frequently held hostage.
In conclusion, peonage defines Men who are kidnapped for human trafficking.
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what product of the light dependent reaction of photosynthesis is utilized in the light independent reaction
Answers
Answer:
In the light-independent reactions or Calvin cycle, the energized electrons from the light-dependent reactions provide the energy to form carbohydrates from carbon dioxide molecules. The light-independent reactions are sometimes called the Calvin cycle because of the cyclical nature of the process.Where dose plastic come from?
Answers
Answer:
Plastics are derived from natural, organic materials such as cellulose, coal, natural gas, salt and, of course, crude oil. Crude oil is a complex mixture of thousands of compounds and needs to be processed before it can be used. The production of plastics begins with the distillation of crude oil in an oil refinery.
Explanation:
Can Plastic Waste Degrade Into The Soil?
Yes or no and explain
Answers
Answer:
Yes, but the process is too slow
Explanation:
We pack almost everything in this material and plastic has become a very normal occurrence in the modern world. Each year, people used 1.6 million barrels of oil just to make plastic bottles.
On the other hand, nature takes about 1000 years to develop a single plastic object, while plastic material takes about 240 years.
why does a person living at a high altitude need large amounts of red blood cells
Answers
Answer:
The effects of high altitude on humans are considerable. The oxygen saturation of hemoglobin determines the content of oxygen in blood. After the human body reaches around 2,100 meters (6,900 ft) above sea level, the saturation of oxyhemoglobin begins to decrease There’s oxygen in the air at high altitude. An increase in red blood cells in their bodies allows people to increase their body oxygen levels, especially when they perform strenuous exercise at high altitudes. Many athletes will train at high altitudes in preparation for competitions at lower altitudes. However, the human body has both short-term and long-term adaptations to altitude that allow it to partially compensate for the lack of oxygen. There is a limit to the level of adaptation; mountaineers refer to the altitudes above 8,000 meters (26,000 ft) as the death zone, where it is generally believed that no human body can acclimatize
(I'm so sorry if I'm wrong)
Hope this Helps!
What is a disadvantage of asexual reproduction?
Answers
Answer:
Asexually reproduced offspring would have no genetic variation from the parent, being a perfect copy. This makes it so there is no genetic variation and disease would easily spread, since there would be no chance of an immunity gene showing up.
Can someone pls help i can't really do this well Write 5 original weather proverbs and explain why they are true and if you don't know what it look like it look like this
"Red Sky at night, sailor's delight. Red sky in the morning, sailor take warning.",
"Mare's tails and mackerel scales make tall ships take in their sails."
there like one line poems
Answers
Answer:
Explanation:
we can do this together just give me some time
1) Variables that are not or cannot be controlled that could interfere with an experiment are called ____.
A. controlled variables
B. extraneous variables
C. dependent variable
D .control group
E. independent variable
Answers
Answer:
Extraneous Variables
Explanation:
Because they are not an independent variable, but they could affect the results of the experiment.
NEED HELP ASAP !!!!
John and Jake are twins. John became a famous artist and lived to be 90
years old. His brother, Jake, was unemployed most of his adult life and died
of a drug overdose at age 35. This is an example of how development is:
A. lifelong.
B. multidimensional.
C. multidirectional.
O D. pliable.
Answers
Answer: D PLIABLE!!
Explanation: took quiz
8) please match the blanks with the following options. thanks.
a) 150
b) 100 cc
c) 1000
d) 100
e) 50
f) 800 cc
g) 850 cc
h) 1500 cc
The modern human brain is about_______in size and can hold about_______billion neurons. The Homo erectus' brain was about_______in size and held about_______billion neurons.
Answers
Answer:
about_______in size and can hold about_______billion neurons. The Homo erectus' brain was about_______in size and held about_______billion neurons.
Answer:
1500 cc
100
850 cc
50Explanation:
The modern human brain is about 1500cc in size and can hold about 100 billion neurons. The Homo erectus' brain was about 850cc in size and held about 50 billion neurons.
Density independent factors are
Answers
Answer:
Density-independent factor, also called limiting factor, in ecology, any force that affects the size of a population of living things regardless of the density of the population (the number of individuals per unit area).
Explanation:
The category of density independent limiting factors includes fires, natural disasters (earthquakes, floods, tornados), and the effects of pollution.
26--2×4 what is the answer
Answers
Answer:
34
Explanation:
26--2×4