Answer:
The research is unethical(fetal stem cells) since the blastocyst, an unimplanted human embryo at the sixth to eighth day of development, is destroyed during the stem cell extraction process.
Answer:
Embryonic Stem Cell Disadvantages
1. Difficult to differentiate uniformly and homogeneously into a target tissue. 2. Immunogenic—ES cells from a random embryo donor are likely to be rejected. after transplantation.
Explanation:
The main disadvantage with embryonic stem cells is the way that they are acquired. Since human embryos are destroyed during the process of harvesting embryonic cells, this makes the research unpopular with those that believe human life begins at conception and that this life is being destroyed.
similar body structure of a chicken wing? (example: pelvis in fish/cetaceans, feet/)hoof of a horse…)
Explanation:
body structure of chicken is feather
When DNA is subjected to high temperatures, what happens?
The DNA molecule crystalizes.
The antiparallel strands reorient themselves to become parallel.
The phosphodiester bonds are broken.
The double helix converts into a triple helix.
The hydrogen bonds that hold the strands together are broken.
Answer:
The hydrogen bonds that hold the strands together are broken.
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Vicky made the following list to describe humidity:
It is the amount of water vapor in the air.
It is shown on weather maps in millimeters or in inches.
It can seen on cold surface as water droplets.
Which statement best describes why the list is incorrect?
It can be seen on hot surfaces as water droplets.
It is shown on weather maps as a percent.
It is the amount of moisture in the air.
It is the temperature of water in the clouds.
Answer:
I think the answer is C
Explanation:
Why has Earth’s climate changed so rapidly in recent years?
Answer:
increased activities that releases greenhouse gas in the world
Explanation:
Human activities in the world leads to production of greenhouse gas. These greenhouse gases trap the radiation from the sun and makes the earth to be in a high temperature.
The third one is correct though burning fossils releases CO2 gases and many more.
The type of DNA base paring seen in DNA is called?
Answer:
complementary base pairing
Explanation:
There are chemical cross-links between the two strands in DNA, formed by pairs of bases held together by hydrogen bonds. They always pair up in a particular way, called complementary base pairing: thymine pairs with adenine (T-A)
What do you do for scurrying good marks as you want?
Answer:
you have to read and understand what you are going to write about.
Can someone help me find real images for Metaphase?
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Which of the following precautions can help prevent mother-to-child HIV transm ensuring that an infected mother eats 10% more calories ensuring that an infected mother uses condoms starting an infected mother on antiretroviral treatment ensuring that an infected mother avoids antiretroviral treatment Question 3
A: Ensuring that an infected mother eats 10% more calories
B:Ensuring that an injected mother uses condoms
C:starting an infected mother on antiretroviral treatment
D:Ensuring that an infected mother avoids antiretroviral treatment
Answer:
C.
Explanation:
Antiretroviral treatment is the most effective way to prevent mother to child infections assuming she is already pregnant.
Wearing condoms only protects others
More calories only needs she's going to be feeding the baby more.
Avoidjng treatment only makes it worse thus making baby more susceptible to catching it.
A sudden, violent, involuntary muscle contraction of a group of muscles caused by a disturbance in brain function is called a ______________________.
Answer:
seizure
Explanation:
What binds to this structure on the hemoglobin molecule?.
Answer:
It is the iron atom that binds oxygen as the blood travels between the lungs and the tissues. There are four iron atoms in each molecule of hemoglobin, which accordingly can bind four molecules of oxygen.
If the base sequence on a DNA molecule is ATC, what would be the mRNA codon sequence?
If the base sequence on a DNA molecule is ATC then UAG will be the mRNA sequence.
How many mRNA codons are there?The four nucleotides found in mRNA — A, U, G, and C — can be combined in a total of 64 different ways because codons are three-letter structures. These 64 codons are made up of 61 amino acid codons and three stop signal codons, which signal the completion of protein synthesis.
A codon is a specific sequence of nucleotides on an mRNA that denotes either a stop signal during protein translation or a specific amino acid. A nucleobase (also known as base), a sugar, and a phosphate group make up a nucleotide.
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3)The Moon rises approximately one hour later every day from sunrise to sunset, as the phases of the moon progress. Why is this?:A)Earth takes 365 days to revolve around the Sun.B)Earth rotates 360 degrees on its axis in twenty-four hours.C)The Moon rotates 360 degrees on its own axis in twenty-seven days.D)The Moon’s position shifts everyday due to its revolution around the Earth
WILL MARK AS BRAINLIEST
Answer:
The answer is B
Explanation:
The earth rotates 360 degrees on its axis every 24 hours which is why we have day and night.
What are the structures of the circulatory system?.
Answer:
The circulatory system consists of three independent systems that work together: the heart (cardiovascular), lungs (pulmonary), and arteries, veins, coronary and portal vessels (systemic). The system is responsible for the flow of blood, nutrients, oxygen and other gases, and as well as hormones to and from cells. An average adult has 5 to 6 quarts (4.7 to 5.6 liters) of blood, which is made up of plasma, red blood cells, white blood cells and platelets.
Which group includes ALL renewable resources?
a) coal,trees,water,oil
b)water, wind,sun,plants
c)minerals,sun,natural gas, water
Answer:
option B
Explanation:
They are all renewable resources
Which of the following is the classic hot and dry desert? a. Arid desert b. Coastal desert c. Cold desert d. None of the above.
Answer:
a
Explanation:
PLEASE HELP!!!!!!!!! WILL GIVE 60 PTS, NOT A JOKE!!!!
Drop down menus:
In some cases of head injuries, the cerebrum may be affected. This type of injury could cause a loss of _________ and impaired __________.
1) a. breathing regulation
b. reflexive movement
c. voluntary movement
2) a. heart rate
b. involuntary movement
c. speech
In some cases of head injuries, the cerebrum may be affected. This type of injury could cause a loss of voluntary movement and impaired speech
The color variation which enables some organisms to survive because their color keeps them from being easily seen in their environment is called:.
DNA molecules are double stranded and RNA molecules are _____ stranded
Answer:
Single stranded
Explanation:
In escherichia coli, the c ring of atp synthase is composed of 12 c subunits. For one fully productive revolution of this ring, how many protons are transported across the membrane for each molecule of atp produced?.
Answer: The membrane-spanning component of human mitochondrial ATP synthase (best known as FO, reflecting the fact that it can be inhibited by oligomycin) is composed by no less than nine polypeptides (a, b, c, d, e, f, g, F6 and 8), while the soluble catalytic core of the complex (F1) consists of five different subunits
Explanation: i checked it with my teacher
Cells without a nucleus are
Answer: prokaryotic cells
Explanation:
A prokaryotic cell is a cell without a nucleus. Since this is a simple definition I cannot explain much further, but an example of a prokaryotic cell is bacteria.
Define the absorbance value displayed on the spectrophotometer.
Absorbance is the measure of the quantity of light intensity absorbed by a sample solution.
What is absorbance?Absorbance, denoted by A, is used to measure the amount of light intensity that is absorbed by a sample.
Absorbance is measured in a technique called spectrophotometry using a device called spectrophotometer. The spectrophotometer measures the intensity of light as photons of light passes through the sample.
The amount of that incident light that is absorbed by the sample is then displayed on the screen or output of the spectrophotometer.
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I need help please!!! I swear this isn’t even in my text book!
Answer:
[tex]\huge\boxed{\sf Option \ B. }[/tex]
Explanation:
Cell Membrane:
are the outermost surface of the cell for animals and secondmost surface of the cell from plants after cell wall.Surface of the cell membrane:
Cell membrane is partially and selectively permeable which means that it only allows certain substances in and out of the cell.[tex]\rule[225]{225}{2}[/tex]
how can the length of a DNA fragment be estimated in gel electrophoresis
Answer: At the same time as the samples, a DNA marker with known length fragments is routinely passed through the gel. You can estimate the length of the DNA fragments in the samples by comparing the bands of the DNA samples with those of the DNA marker.
Explanation:
What are domains in biology? Question 8 options: internet website classification system highest ranking of organisms in taxonomy classification under which most dominant animals fall.
Domain is the highest ranking of organisms in taxonomy.
The correct option is b.
What do you mean by domain?Domain is the highest ranking of the biological system.
In the system there are three domains
ArchaeaBacteriaEukaryaThis is the highest classification, after this further classification of living organism is done.
Thus, the correct option is B
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Hemophilia is a disease that causes uncontrollable bleeding. If a father has it, all of his daughters will be carriers of the disease, and about half of his sons will have the disease.
Which macromolecule is involved in how hemophilia is passed from parents to their children?
Explanation:
Hemophilia is a disease that is characterized by an abnormal blood clotting process. There are many different proteins that are involved in the clotting process and a single mutation or change in one of them could result in serious effects. Hemophilia is characterized by an abnormal version of one of the many proteins involved in the clotting process, the proteins that are commonly affected are the coagulation factor 8 or 9 (VIII or IX). These abnormal proteins are caused by a mutation in the gene (within the DNA) that codifies for the production of each protein. In other words, a mutation in the part of the DNA, (gene F8) will lead to a dysfunctional coagulation factor VIII and a mutation in the gene F9 will lead to a dysfunctional coagulation factor IX. Importantly, these mutations could be inherited and could cause hemophilia. Therefore, an error in the DNA and subsequently, an error in the protein will cause hemophilia. Finally, it is important to mention that there are other types of hemophilia that are not caused by the above-mentioned mutations, such as acquired hemophilia.
Answer:the macromolecule which is involved in haemophilia which is passed from the parents to the children is the defect in factor number 8 of clotting cascade.
Explanation:
1) What do you think made Rachel Carson's book, Silent Spring, so inspiring to readers?
Kingdom Plantae Question 12 options: Eukaryotic Prokaryotic Unicellular Multicellular Autotrophic Heterotrophic.
Answer:
Eukaryotic Multicellular Autotroph
12. In the space below, list the characteristics which are referred to as "certain similarities” that
the basis for classifying organisms in the same basic group.
What is the effect of hyperinsulinism on the metabolism of carbohydrates, amino acids, and lipids by the liver
Hyperinsulinism produces an excessive uptake of glucose by the liver (hypoglycemia). It also leads to an interruption in amino acid and fatty acid catabolism.
What is hyperinsulin?Hyperinsulin is a condition associated with the excessive production of insulin, a key hormone in glucose metabolism.
The main effect of hyperinsulinism is an excessive uptake of glucose by the liver, which is associated with hypoglycemia.
Hyperinsulin can also produce a chronic interruption in the amino acid and fatty acid metabolism (catabolism).
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The fetus receives antibodies from the mother that last several weeks after birth. This is an example of _____ immunity
Answer:
Natural passive
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