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m_a_m_a [10]
3 years ago
11

What sticks to DNA and can cover its expression?

Biology
1 answer:
crimeas [40]3 years ago
6 0
<span>Methyl groups 
</span>DNA<span> methylation is a process by which </span>methyl groups<span> are added to the </span>DNA<span> molecule. Methylation can change the activity of a </span>DNA<span> segment without changing the sequence.</span>
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What is the function of NADPH?
kenny6666 [7]

NADPH, or nicotinamide adenine dinucleotide phosphate, is essential for photosynthetic organism carbohydrates. This reduced coenzyme is a high energy molecule and a reduced form of NADP+ that plays a key role in driving the Calvin cycle.

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3 years ago
Which of the following scenarios is most likely to occur if the climate continues on its current trajectory? a. Continental glac
pychu [463]

Answer:

b. Cities like New York, New Orleans, and Miami will be flooded by ocean water.

Explanation:

The theory says global warming will cause the temperature of the planetary atmosphere to rise. The hotter environment will make ice masses of Greenland, and the poles to melt completely and make coastal cities like New York, New Orleans, and Miami flooded by the ocean.

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3 years ago
All large radioactive atoms decay into smaller atoms by releasing alpha particles. Each alpha particle has 2 protons, 2 neutrons
nataly862011 [7]
All large radioactive atoms decay into smaller atoms by emitting alpha particles which consists of two protons and two neutrons. An alpha particle can also be thought of as the nucleus of a helium atom and as such they are sometimes referred to as He2+ . The positive charge is due to the lack of two electrons. 
3 0
3 years ago
Read 2 more answers
A key objective in this chapter is to identify the major enzymes in the digestion of carbohydrates, proteins, and fats as well a
Pani-rosa [81]

Answer:

<h2>Gastrin: stomach, </h2><h2> CCK- SI, </h2><h2> Insulin- pancreas, </h2><h2>Glucagon-pancreas.  etc</h2>

Explanation:

1.  Gastrin:  secreted by stomach stimulating activity of the stomach ,

2. CCK: secreted by SI stimulating secretion of pancreatic enzymes; contraction of gallbladder and pyloric sphincter and inhibitory effects on stomach

3. Secretin:  secreted by SI if material entering SI is acidic, triggering secretion of HCO₃-

.

4. Insulin: produced by beta-cells of pancreas and

stimulates storage of glucose in liver and muscle and it causes re-uptake of glucose when blood-sugar is high, lowering blood sugar

5. Glucagon- produced by alpha-cells of pancreas and

it stimulates release of glucose from liver when blood-sugar is low, and results in raising blood sugar.

6 0
3 years ago
When a red 4 o'clock flower with a white flower, all of the offspring are pink. This type of inheritance is known as:_______ a.
KatRina [158]

Answer:

b. incomplete dominance

Explanation:

Incomplete dominance is a type of inheritance that does not confirm to Mendel's principles of inheritance i.e it is non-mendelian. Incomplete dominance occurs when an allele of a gene does not completely mask the expression of another allele of the same gene, hence, the two alleles combine to form a heterozygous that is different but intermediate of both parent phenotypes.

This is the case in this question where the red allele (R) of a four o'clock plant is INCOMPLETELY DOMINANT over the white allele (W), hence, they both produce an intermediate pink phenotype (RW), which is a blending of both red and white phenotypes.

5 0
3 years ago
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