In human DNA, adenine (A) makes up approximately 30.9% of the bases, andguanine (G) makes up approximately 19.9% of the bases; therefore the percentage thymine (T) and cytosine (C) are
(A) 19.8% T and 19.8% C.
(B) 19.8% T and 29.4% C.
(C) 29.4% T and 19.8% C.
(D) 29.8% T and 29.8% C.
(E) 19.9% T and 30.9% C.
Can you please explain with some details?

Answers

Answer 1

Answer: In human DNA, there are nitrogenous base pairings- A, T C and G. A pairs with T and C pairs with G. Because they're a pair, the ratio of A:T and C:G should be as close to 1:1 as possible. Since A makes up approx 30.9%, T should be either C or D. As G makes up approx 19.9%, we can rule out option D, therefore the answer is C! Hope this helps (:

Related Questions

DNA makes a good molecule for storing information because? its bases can be joined together in any order, like the letters of the alphabet can be strung to form different words. each nucleotide within a DNA strand can give a cell different information, and there are many nucleotides in every cell. it can absorb ultraviolet light, so DNA can help protect cells from the damaging effects of this form of radiation. it is a type of nucleic acid, and most acids are an important part of information storage within cells.
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Which is the end result of cytokinesis

Answers

Answer:

Division of the cell into two daughter cells.

Explanation:

Cytokinesis is the division of cytoplasm that occurs at the end of cell division to form two new cells, but the process that occurs in animal cells is very different from that in plant cells.

In both cases, however, the cell divides into two daughter cells identical to the mother cell.

In plant cells the golgi apparatus forms small vesicles that migrate to the central region of the cell. The vesicles fuse and form pockets called fragmoplasts, where new golgian vesicles will be added until the new cell wall is completely formed.

At the end of the process there will be two cells are approximately half the size of the initial cell.

In animal cells there is a constriction, such as a "strangulation", in the median region that progresses to complete separation to form two new cells. Cytoskeleton fibers act in this separation process.

There are two daughter cells. The cell has split into two. The membrane has pinched together in the middle.
Hope that helped you.

What does a red shift in light from distant celestial objects indicate to a scientist on earth?

Answers

A red shift in light from a distant source is always assumed to indicate
that the distant source is moving away from us. That would certainly
cause it, and we don't know of anything else that would, so it's the only
way we know to explain it.

Just about all of modern Cosmology, including the whole idea of the
expanding universe, is based on that interpretation of the red shift.

Understand this: That interpretation does explain many things that
we do see in space, and it predicts things that we do find when we
look for them. But that does not prove it, and there is no way to prove
it. So it's perfectly correct to say that it's "only a theory".

Just like gravity, atoms, and the nature of light.

All of the following describe the image above except __________.A.
neural communication
B.
neurotransmitter release
C.
hormone release
D.
nervous system functioning

Answers

Ans.

The image below represents neural transduction that involves release of signaling molecules or neurotransmitters by axon terminal of one nerve cell and binding of the released neurotransmitters with the receptors, present on dendrites of another nerve cell. It is method of communication between the neurons. Hence, the image is showing a functional nervous system.

On the other hands, hormones are released by endocrine glands that release their content directly into the blood. The nervous transmission does not include hormone release.

Thus, the correct answer is option C). 'hormone release.'

C.
hormone release...

What are masses of the filaments known as hyphae called?

Answers

These masses of filaments composed of hyphae are called mycellium.

The digestive system's main function is to O protect the body against infectious diseases
O support and protect the body's organs.
O store nutrients until they are absorbed into the bones O break down food to be absorbed in the bloodstream.

Answers

store nutrients until they are absorned

Final answer:

The main function of the digestive system is to break down food so it can be absorbed into the bloodstream. This process involves several organs starting from the mouth up to the large intestine.

Explanation:

The main function of the digestive system is to break down food so it can be absorbed into the bloodstream. This process begins in the mouth where food is partially broken down by the action of enzymes. The food then moves down the esophagus and into the stomach, where it is broken down further through the action of stomach acids. The partially digested food then enters the small intestine, where most of the nutrients are absorbed into the bloodstream. The remaining undigested food proceeds to the large intestine, where water is absorbed and the rest is excreted from the body as feces.

Learn more about the Digestive System here:

brainly.com/question/32531

#SPJ6

What are the functions of the smooth and rough E.R.s

Answers

The endomembrane system is a group of cell membranes and organelles that are mutually interconnected, either by being directly continuous with one another or by sending one another vesicles—little spheres of membrane then can bud off from one membrane and fuse with another.

The rough endoplasmic reticulum (rough ER) gets its name from the bumpy ribosomes attached to its cytoplasmic surface. As the ribosomes attached to the rough ER make proteins, they feed the newly forming protein chains into the lumen.

The smooth endoplasmic reticulum (smooth ER) does not have ribosomes on its cytoplasmic face.The smooth ER has a variety of functions, and its exact role may vary between cell types.

One role of the smooth ER is to produce lipids, including phospholipids, cholesterol, and steroids.

Answer:

Read more on Brainly.com - brainly.com/question/1859844#readmore

Explanation:

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