Why does DNA need to replicate before cells divide?
Answer:
Below:
Explanation:
Replication is an essential process because, whenever a cell divides, the two new daughter cells must contain the same genetic information, or DNA, as the parent cell. ... Once the DNA in a cell is replicated, the cell can divide into two cells, each of which has an identical copy of the original DNA.
whenever a cell divides, the two new daughter cells must contain the same genetic information, or DNA, as the parent cell.
4. Arrange Write the following steps in the order in which they occur during glycolysis
A six-carbon molecule is broken down into two three-carbon molecules.
Two NADP molecules are converted into two NADH molecules.
Two phosphate groups from two ATP molecules are joined to glucose.
Two three-carbon molecules are converted into two Folecules of pyruvate as four
molecules of ATP are produced.
The correct order of glycolysis reactions is:
Two phosphate groups from two ATP molecules are joined to glucose.Two NADP molecules are converted into two NADH molecules.A six-carbon molecule is broken down into two three-carbon molecules.Two three-carbon molecules are converted into two molecules of pyruvate as four molecules of ATP are produced.During glycolysis, the glucose molecule is converted to Glucose-6-phosphate as a result of phosphorylation. The phosphate group from ATP is joined to the glucose molecule by an enzyme known as hexokinase.
The glucose-6-phosphate then undergoes isomerization to become fructose-6-phosphate which is then phosphorylated again by the hexokinase enzyme to become fructose-1,6-biphosphate.
An aldolase enzyme converts fructose-1,6-biphosphate to one molecule of glyceraldehyde-3-phosphate and one molecule of dihydroxyacetone phosphate. The latter is then converted to another molecule of glyceraldehyde-3-phosphate.
A dehydrogenase enzyme converts glyceraldehyde-3-phosphate to 1,3-bisphosphoglycerate with NADH being generated from the reduction of NAD+.
A kinase enzyme then converts 1,3-bisphosphoglycerate to 3-phosphoglycerate with ATP being generated from ADP. A mutase enzyme quickly converts the 3-phosphoglycerate to 2-phosphoglycerate while an enolase enzyme converts the latter to phosphoenolpyruvate.
Finally, a pyruvate kinase enzyme converts phosphoenolpyruvate to pyruvate with another ATP being generated.
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Item 3
Which statement is true of chloroplasts?
They transport glucose into the cell.
They are present in animal cells, but not in plant cells.
They convert light energy into chemical energy.
They convert the energy in glucose into a more usable form.
Answer:
They convert light energy into chemical energy.
Explanation:
How was Dr. Martin Luther King , Jr. , an important force in creating a more just world ?
Evidence and reasoning plz
Martin Luther King, Jr. worked hard to bring greater equality to America and ensure civil rights for all people, regardless of race.
Which researcher theorized that hypnosis comes about as a form of roleplay between hypnotist and subject? A. Ernest Hilgard B. Theodore Sarbin C. Theodore Barber D. Milton Erickson Please select the best answer from the choices provided A B C D
Answer:
Hey, your answer should be D
Explanation:
Good luck friends
The researcher who theorized that hypnosis comes about as a form of roleplay between hypnotist and subject is Milton Erickson, who is in Option D. Milton Erickson was a famous American psychiatrist and psychotherapist.
What is Milton Erickson?He is widely known for his pioneering work in the field of hypnosis. He believed that hypnosis is a form of communication between the hypnotist and the subject and that it involves a process of "roleplay" in which both parties take on certain roles or identities. In this sense, the hypnotist takes on the role of a facilitator or guide, helping the subject access their own inner resources and abilities. The subject, on the other hand, takes on the role of an active participant in the hypnotic process, using their own imagination and creativity to bring about positive changes in their thoughts, feelings, and behaviors.
Hence, the researcher who theorized that hypnosis comes about as a form of roleplay between hypnotist and subject is Milton Erickson, who is in Option D.
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which is not an abiotic factor that could affect a population?
Answer:
it is not the abiotic power my beautiful kind sir
Explanation:
Which type of cell division is responsible for the sequoia tree growing bigger?
Mitosis
Meiosis
Cell Differentiation
Random Fertilization
I know I'm late but I too am taking the Phenomenon #2 Assessment (Part 1) and want to help any future readers : )
(I pretty much gave you guys the answer but the little facts might still help, so I didn't give the direct answer in the start)
Explanation:
Mitosis: A type of cell division that results in 2 identical daughter cells.
* Process responsible for us getting bigger
*Process that repairs damaged cells
*grows new skin for us when cut
(took this out of my teachers lesson/ CC)
While...
Cell differentiation is:
Same DNA, just different genes get expressed!
This is the reason we look different are we get older! (Not the reason we grow)
^ This above are the 2 people most likely think are the answers
Good luck : )
Extra:
Meiosis:
A type of cell division that reduces the number of chromosomes in half.
True or false: Theoretically, it is possible (but very difficult) for a population to not evolve for a while.
It is true that it is possible for a population to not evolve for a while.
There is something called the Hardy-Weinberg theorem, which characterizes the distributions of genotype frequencies in populations that are not evolving.
There are 5 Hardy-Weinberg assumptions:
no mutation random mating no gene flow infinite population size and no selection (natural nor forced).You can see that some of these are kinda extreme and really hard to get, but with approximations, we can work.
For example, instead of an "infinite population size" we have enough with a really large population, such that genetic drift is negligible.
Concluding, yes, it is possible (but really difficult) for a population to not evolve for a while (at least, in nature), as long as the 5 assumptions above are met.
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Does hypertonic mean out of the cell.
Answer:
yes
Explanation:
In biology, a solution outside of a cell is called hypotonic if it has a lower concentration of solutes relative to the cytosol.
How to calculate allele frequency.
Answer:
by dividing the number of times the allele of interest is observed in a population by the total number of copies of all the alleles at that particular genetic locus in the population
which of these cells produce and secrete antibodies?
Answer:
Antibodies are produced by specialized white blood cells called B lymphocytes (or B cells). ... The mature B cells, called plasma cells, secrete millions of antibodies into the bloodstream and lymphatic system.
Answer:
B lymphocytes
Explanation:
What is the difference between chromosomes, chromatin, and DNA?
I
Answer:
A chromosome is a long DNA molecule with part or all of the genetic material of an organism. and I can't think of the other one sorry.
Explanation:
Which of the following is an example of nonpoint source pollution caused by burning of
fossil fuels such as coal?
O acid rain
eutrophication
O aquifer depletion
O stormwater runoff
Explanation:
Acid rain eutrophication
Acid rain eutrophication is an example of nonpoint source pollution caused by burning of fossil fuels such as coal.
What is meant by eutrophication?Acid rain eutrophication occurs when the environment becomes enriched with nutrients, increasing the amount of plant and algae growth to estuaries and coastal waters.
What is eutrophication and its causes?Eutrophication is characterized by excessive plant and algal growth due to the increased availability of one or more limiting growth factors needed for photosynthesis .
Hence, A is correct option
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When we inhale what do we bring in?
Answer:
oxygen
Explanation:
We breathe in oxygen into our lungs and let out carbon dioxide.
If two 4-Newton forces act on an object in the same direction, what is the net force on the object?
Answer:
8 Newton net force
Explanation:
Have a nice day
enzymes are specific they will only fit with certain substrates explain why lactase can digest lactose but cannot digest other sugars like maltose and sucrose
Explanation:
your small your small intestines can't absorb either lactose or maltoseyou use different enzymes to digest the two sugars lactase break down lactose why an enzyme called sucrase-isomaltase breaks down maltose because enzyme are so specific with regard to function you can't break down maltose with lactose or vice versa
Lactase breaks down only lactose in food in our body can absorb it not maltose and sucrose as enzymes are specific in nature.
what are the properties of an enzyme ?Enzymes are protein which act as a catalysts and speed up the rate of biochemical reactions with out changing the structure of the final product.
Enzymes can control the speed and specificity of the chemical reaction, and the rate of biochemical reaction often influences enzymes and they can take place at a relatively low temperature; it lower the activation energy.
The enzyme activity pH specific, that is at a particular pH, each catalyst is most active for example at PH 2 for pepsin, pH 8.5 for trypsin, for example.
Both enzymes have active sites which can activate biochemical reactions. It is soluble in water, dilute glycerol, NaCl, and dilute alcohol.
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Since transport of materials in and out of the cell can only happen at the cells surface, what problem does this pose for larger cells
Answer:
More surface area being taken up meaning in less cells getting in or out.
a/an ___ is a blood clot attached to the interior wall of a vein or artery.
Answer: a thrombus
A thrombus may also form in your heart
A thrombus is a blood clot attached to the interior wall of a vein or artery, which is option a. So the correct option is option a, as thrombus formation occurs when blood coagulation factors are activated and form a clot within a blood vessel.
Thrombi can occur in veins (venous thrombosis) or arteries (arterial thrombosis). In veins, a thrombus can lead to deep vein thrombosis (DVT), which commonly occurs in the lower extremities. If a thrombus dislodges from its site of origin and travels through the bloodstream, it is called an embolus, and it can potentially cause an embolism in another location. So the correct option is option a.
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a/an ___ is a blood clot attached to the interior wall of a vein or artery.
A. thrombus
B. artery
Research and produce a summary about the history of the microscope.
Newly hatched birds that lack down and are nest-bound, unable to feed on their own, as with baby wrens or robins, are Group of answer choices carinate. altricial. derived. ratites. precocial.
Newly hatched birds that lack down and are nest-bound, unable to feed on their own, as with baby wrens or robins, are ALTRICIAL. These species include hummingbirds, swallows, passerine birds, woodpeckers, etc.
In altricial species, young individuals are underdeveloped at birth, thereby needing the help of parents to mature and develop into adult individuals.
Conversely, precocial species are species in which young individuals are mature and mobile from the moment of birth.
Most domestic species of birds (i.e., ducks, turkeys, chickens, etc) have a precocial type of development.
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what is the overall purpose of cellular respiration?
Answer:
The overall purpose is to break down sugar in the presence of oxygen to release in the form of ATP.
Explanation:
Cellular respiration is the process that occurs in the mitochondria of organisms (animals, and plants). this process releases carbon dioxide and water as waste products
Describe the structural make-up of a gene?
Answer:
Structure of gene:
The chemical structure of a gene comprises nucleotides. A part of DNA- genes are made up of A, T, G and C nucleotides
Explanation:
Red blood cells do not have a nucleus but the ____ has a lot of haemoglobin to carry more oxygen.
Answer:
Red blood cell has lot of haemoglobin to carry more oxygen
A polar covalent bond is a bond between
a. two polar molecules.
b. two atoms that share electrons unequally.
c. two atoms that share electrons equally.
d. two oppositely charged ions.
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The Correct choice is ~
two atoms that share electrons unequallyAfter cytokinesis I of meiosis, the chromosomal makeup of each daughter cell is…?
a) haploid, and the chromosomes are each composed of a single chromatid
b) haploid, and the chromosomes are each composed of two chromatids (which might be unique due to cross over)
c) diploid, and the chromosomes are each composed of two IDENTICAL chromatids
d) haploid, and the chromosomes are each composed of two IDENTICAL chromatids
e) tetraploid, and the chromosomes are each composed of two chromatids (which might be unique due to cross
over)
f) diploid, and the chromosomes are each composed of two chromatids (which might be unique due to cross over)
I have no idea what I'm doing
Height in humans is a polygenic trait with a distribution similar to the graph shown. Which is true concerning the distribution of height in human populations?(1 point)
Most individuals will be below average height.
Most individuals will be at the extremes of height.
Most individuals will be of average height.
Most individuals will be above average height.
Answer:
Most individuals will be of average height.
Explanation:
Just took it and got 100%.
1. Which statement best describes a polygenic trait?
-A polygenic trait is controlled by multiple genes and influenced by the environment.
2. IQ is determined by:
-multiple genes and environmental factors
3. Which statement best describes trait distribution?
-Distribution describes how the variation in traits is spread across a population.
4. Which statement is true?
-Mendelian traits cannot be shown on a bell curve.
5. Height in humans is a polygenic trait with a distribution similar to the graph shown. Which is true concerning the distribution of height in human populations?
-Most individuals will be of average height.
Hope this helps have a good day and happy holidays!! ^^
Which of the following structures is part of the peripheral nervous system?
*Cranial and spinal nerves
Brain
Spinal cord
None of the above
Answer:
a. Cranial and spinal nerves
Explanation: is correct
how do scientists know that mountains were once at the bottom of the ocean
Answer:
Its more then likely that they do and they were the ones that found that out. but im not 100% sure
Why does the moon appear to change shapes in the sky?
A. The gravity on the moon from the Earth changes the shape.
B. The light reflected off the moon from the Earth changes.
C- The amount of sunlight
reflected off the moon changes its shape as seen on Earth.
D- The relative position of the Sun, Moon, and Earth changes the amount of reflected sunlight that we see.
Answer:
D
Explanation:
