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elixir [45]
3 years ago
9

Please help me answer the 2 questions in the photo

Biology
1 answer:
I am Lyosha [343]3 years ago
6 0
3- EDCBGFHALJK
4- kidney tubules reabsorb glucose.
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What would be the mRNA complementary base sequence for a DNA strand that is: A  C G G T C<br>​
Alina [70]
It would be UGCCAG. This is because in mRNA, thymine is replaced by Uracil. That means the complementary base pairings are uracil and adenine (instead of thymine and adenine in DNA) and cytosine and guanine. So you need to change them to the other base in the pair. Meaning A (adenine) becomes the base it is paired with, being Uracil in this case and so on.
4 0
3 years ago
An operon is controlled by a repressor. When the repressor binds to a small molecule, it binds to DNA near the operon. The opero
larisa [96]

Answer:

Negatively repressible.

Explanation:

A control which occurs through repressor is known as negative control which may be inducible or repressible.

When a small molecule named as allolactose binds this repressor it leads to allosteric repulsion which removes repressor from the operator as a result of which RNA polymerase can start transcription. Allolactose is therefore known as inducer because it induces lac operon expression.

But here, the operator is active (induced) already so there is no need to induce the operon which means that it can only be repressed so that transcription could stop. So the answer is negatively repressible operon.

6 0
3 years ago
What areas can act as carbon sinks?
attashe74 [19]

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.
7 0
3 years ago
Consider a gene with four alleles A1, A2, A3, and A4. How many distinct heterozygous genotypes are possible?
Troyanec [42]
This can be solved either by using a Punnet Square or you can use the formula (n(n+1))/2, where n is the number of alleles. However, using either method will give you the number of possible genotypes regardless if it's homozygous or heterozygous. If we use the second formula, that will give you 10 possible genotypes. Since you only want to know the number of heterozygous genotypes, you should subtract the number of possible homozygous genotypes. In this case, there are four. That is (A1,A1), (A2,A2), (A3,A3), and (A4,A4). Knowing this, you'd be able to figure out that there are six heterozygous genotypes.

(A1,A2), (A2,A3), (A3,A4), (A1,A4), (A1,A3), (A2,A4)
5 0
4 years ago
Read 2 more answers
Please help me I am struggling:(
Grace [21]

2:

  • cellular organization
  • metabolism
  • homeostasis
  • hereditary
  • growth and development
  • response to stimuli
  • adaptation to evolution

4: Photosynthesis

those are the ones I am pretty sure are correct, I am so sorry I haven't been in biology in so long :(

3 0
3 years ago
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