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Luda [366]
1 year ago
15

Which of the following hereditary conditions is characterized by excessive sebum production?

Biology
1 answer:
natali 33 [55]1 year ago
3 0

Answer:

a.c.n.e (join the letters together without full stops. i need to type like this as brainly does not allow me to type that word)

Explanation:

An excess of sebum combined with dead skin cells can block pores and cause blemishes such as blackheads and pimples.

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Suppose there is a protein "A" which binds to a DNA sequence and increases transcription of the gene CBC23. In the presence of m
fenix001 [56]

Answer:

A = Activator

B = Effector

Explanation:

An activator is a protein which typically binds to a short (50–1500 bp) region of DNA which might be located either upstream (mainly) or downstream of a gene so as to cause increased transcription. This particular region of DNA is known as enhancer and activator is also  known as transcription factor. Activator is a trans-acting factor which binds to the cis-acting factor which is enhancer so as to enhance transcriptional expression.

But another protein named as effector may restrict activator from binding to the enhancer leading to a decrease in transcriptional expression by binding to the activator allosterically. Allosteric binding of effector to the activator causes conformational change in activator so it can no longer bind the enhancer.

7 0
3 years ago
The spleen and the thymus work together to fight infection. These organs together make up which next level of organization?​
lisabon 2012 [21]

I’m looking for this too, ain’t no way your in collage learning this.

6 0
3 years ago
Define haploid cells, and explain how they are produced
vlabodo [156]

Answer:

Haploid cells are produced when a parent cell divides twice, resulting in two diploid cells with the full set of genetic material upon the first division and four haploid daughter cells with only half of the original genetic material upon the second.

8 0
3 years ago
One of the buffers that contribute to pH stability in human blood is carbonic acid (H2CO3). Carbonic acid is a weak acid that, w
tankabanditka [31]

Answer:

The answer is "Option C".

Explanation:

In the given question, the pH scale is used to evaluate acid or basic (alkalinity) formulas. It is nearly positive throughout the blood. Human blood has to maintain its pH at about 7.4, to prevent dramatically increased or lower changes, even though the bloodstream enters or exits acidic or essential substances.  

  • The buffers are essential for stabilization management. Calcium carbonate produced as carbon dioxide joins the blood system and combines with the liquid is a buffer which adds to the pH level in the human blood.
  • It is returned to the water and distributed as a waste product until it enters the lungs, that's why choice C is correct.
7 0
3 years ago
Answer this question properly​
vampirchik [111]

Answer:

<h2>Hindi ko alam hehee</h2>

Explanation:

<h2>ssorry po </h2>
8 0
2 years ago
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