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yuradex [85]
3 years ago
6

Will has dramatically gained weight since he sustained a head injury in an automobile accident. damage to which nucleus of the h

ypothalamus might account for will's weight gain?
Biology
1 answer:
omeli [17]3 years ago
5 0
<span>The correct answer is ventromedial nucleus of the hypothalamus. This is the correct answer because the ventromedial nucleus is responsible for hunger, food intake, obesity and energy homeostasis. Therefore damage to this part of the brain may have altered Will's hunger and food intake leading to the weight gain.</span>
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M protein is produced by
egoroff_w [7]

Answer:

The correct answer will be option- <em>Streptococcus pyogenes.</em>

Explanation:

M protein is an important virulence factor which is produced and expressed on the surface of <em>Streptococcus pyogenes. </em>

This protein plays important role in the bacterial infection like adherence to epidermal keratinocytes, resistance to phagocytosis,  invasion of epithelial cells and microcolony formation.

The M-protein is a α-helical coiled structure protein which consists of the four distinct regions (A–D) in which  A-region in the N-terminal is highly variable.

Thus,  option- <em>Streptococcus pyogenes</em> is the correct answer.

4 0
2 years ago
Knowing that some individuals from Island 1 colonized Island 2, biologists sample the Mainland and two Island populations fifty
raketka [301]

Answer:

The evolutionary mechanism that could be influencing the allele frequencies between both islands and the mainland population might be Founder Effect.

Explanation:

Genetic drift is the random change that occurs in the allelic frequency of a population through generations. The magnitude of this change is inversely related to the size of the original population. These changes produced by genetic drift accumulate in time and eventually, some alleles get lost, while some others might set. Genetic drift affects a population and reduces its size dramatically due to a disaster -bottleneck effect- or because of a population split -founder effect-. In <u>founder effect</u>, a new population originates when a few individuals who are coming from a bigger population carrying its genes, settle down in a new area and reproduce. This small population might or might not be genetically representative of the original one. Some rare alleles might be exceeded or might be completely lost. Consequently, when the small population increases in size, it will have a genetically different composition from the original one. In these situations, <u>genetic variability is reduced</u> and there exists the possibility of developing a peculiar allelic composition. If the number of individuals that originated the new population is low, the founder effect will be very extreme, because the effects of the genetic drift are inversely proportional to the original number of individuals.  

<em>In the exposed situation, the evolutionary mechanism that could be influencing the allele frequencies between both islands and the mainland population might be Founder Effect. The fact that both islands are similar in their frequencies might be due to little genetic variation on island 1, or because dispersion to island 2 is a recent event on time. </em>

5 0
2 years ago
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maria [59]

Answer:

NOTHING THERE

Explanation:

7 0
3 years ago
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DNA<span> is a double helix, while RNA is a single helix. Both have sets of nucleotides that contain genetic information. </span>DNA<span> is a molecule that contains the instructions an organism needs to develop, live and reproduce.</span>
4 0
3 years ago
A small sac that lubricates the area around the elbow, knee, or shoulder joint where friction is most likely to occur is known a
Licemer1 [7]
Bursa - A small sac that lubricates the area around a joint where friction is most likely to occur 
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8 0
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