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Veseljchak [2.6K]
3 years ago
12

What causes the phases of the moon ?

Biology
2 answers:
Natali [406]3 years ago
6 0

Answer:

<em>A).</em>

<em>So the basic explanation is that the lunar phases are created by changing angles (relative positions) of the earth, the moon and the sun, as the moon orbits the earth.</em>

Explanation:

Charra [1.4K]3 years ago
4 0

Answer:

a

Explanation:

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With regard to enzymes key is to lock as
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The answer is substrate 
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4 years ago
In eukaryotes, DNA is organized into_________which considerably complicates DNA-protein interactions during gene regulation.
lukranit [14]

Answer:

chromosomes

Explanation:

6 0
3 years ago
When comparing proteins and polysaccharides, the following similarities
lianna [129]

Answer:

The comparison of proteins and polysaccharides establishes that they have similarity in both consist of linked monomers via the process dehydration reactions.

Explanation:

Both proteins and polysaccharides are polymers whose structure consists of the union of monomers. In the case of proteins the monomer is the amino acid, while in the polysaccharides can be glucose molecules.

The process of polymer formation is called polymerization, and one of the reactions that this process allows is <u>polycondensation</u>, where a water molecule is lost in the union of monomers.

The loss of water in a chemical reaction involves dehydration, a characteristic shared by the processes of adding monomers to proteins and polysaccharides.

The other options are not correct, because

  • <em>Hydrolysis produces the rupture of molecules, with the intervention of water.</em>
  • <em>Only polysaccharides are sugars bound by the dehydration synthesis process.</em>
  • <em>Only proteins consist of amino acids linked through the process of hydrolysis.</em>

8 0
3 years ago
Sex-linked traits punnet squares - please help walk me through it! I’m so confused haha
m_a_m_a [10]

Explanation:

a) The allele for hemophilia is Xh and that for normal is XH.

Crossing a hemophiliac male, Xh Y, with a normal female XH XH,

  • XH Xh, normal carrier female
  • XH Xh, normal carrier female
  • XH Y, normal male
  • XH Y, normal male

b) Both parents are normal and children still having hemophilia means that the mother is a carrier.

Let's see how it'll work out if we cross a normal male with a carrier female,

XH Y × XH Xh

  • XH XH, normal female
  • XH Xh, carrier female
  • XH Y, normal male
  • Xh Y, hemophiliac male

This means that the possibility of a female being normal, a carrier or not, is 100%. The possibility of a male being normal is 50% and the possibility of him being a hemophiliac is also 50%.

Thus it's possible that all 7 sons get hemophilia as each male baby has a 50% chance of having the genotype Xh Y. And it makes sense that all the females are normal. Those females could have the genotypes XH XH, or XH Xh (carriers).

4 0
3 years ago
Foot-and-mouth disease virus (FMDV) causes severe disease in pigs, cattle, sheep and goats. High levels of FMDV infection can th
mixer [17]

Answer:

A. It uses the animal’s cellular machinery to reproduce inside the animal.

Explanation:

I would go with A because since it is a virus it cannot live outside the body and thus needs to rely on host's cell for metabolism as viruses are not capable of having their own metabolism.

8 0
3 years ago
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