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Leto [7]
2 years ago
13

The current theory of the structure of the plasma membrane is best described by the what model

Biology
1 answer:
Nonamiya [84]2 years ago
8 0

Answer:

The fluid mosaic model

Explanation:

The fluid mosaic model describes the structure plasma membrane as a flexible barrier that contains various different components (a mosaic). These components include the phospholipid bilayer, as well as the proteins and other lipids and carbohydrates that are embedded in it. These different components give the membrane its fluid characteristics.

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Goiters are often produced in the _____, a gland that plays a key role in metabolism by secreting the thyroxine and triiodothyro
zvonat [6]
Goiters are often produced in the Thyroid. Goiters is an enlarged thyroid gland. Goiters are believed to be painless, but Goiters make it difficult for the victim to breathe and swallow food. Goiters are caused by lack of iodine in one's diet. Treatment of Goiters depends on its size, some Goiters go away without any treatment while some goiters are treated through surgery.
6 0
3 years ago
1. Walking through the forest, you find a large population of toadstools. From your extensive knowledge of the kingdom fungi, yo
Lena [83]

Answer:

No, observed and expected frequencies are different.

Observed frequencies: p2 = 0.56 , 2pq = 0.375, q2 = 0.062

Expected frequencies: p2 = 0.774 , 2pq = 0.211, q2 = 0.014

Explanation:

Given frequency of recessive genotype (q2)= 14/ 1006 = 0.0139

Frequency of recessive allele s (q) = square root of 0.0139 = 0.12

Frequency of dominant allele S (p) = 1-q = 1-0.12 = 0.88

Expected frequency of homozygous recessive genotype = 0.12 x 0.12 = 0.014

Expected frequency of homozygous dominant genotype = 0.88 x 0.88 = 0.774

Expected frequency of heterozygous dominant genotype = 2pq = 2 x 0.88 x 0.12 = 0.211

Observed frequencies in population 2

Observed frequency of homozygous dominant genotype = 308 / 549 =0.56

Observed frequency of heterozygous dominant genotype = 206 / 549 =0.375

Observed frequency of homozygous recessive genotype = 34 / 549 =0.062

Observed frequencies do not match with expected frequencies.

6 0
3 years ago
Which of the following is not an indication of a chemical reaction?
podryga [215]
<span>The correct answer is a substance freezes. That is because this is a change of a physical property, not a chemical one. This shows that the chemical is still exactly the same and will react the same, it is only different in its state of matter, which is irellevant for its chemical properties. It will still react the way it's supposed to react when combined with other chemicals.</span>
7 0
2 years ago
Read 2 more answers
What is the water potential of the surrounding solution
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Answer:

I'm not really sure but I'll guess it's

7 0
3 years ago
True or false? the driving force for the unloading of oxygen from hemoglobin into tissues is the difference in pco2 levels betwe
mrs_skeptik [129]

Answer:

False. The driving for is the partial pressure gradient of O2 (PO2 difference), not the PCO2 gradient.

However, keep in mind that an increase in PCO2 can facilitate the unbinding of oxygen from hemoglobin. This is due to a decrease in pH associated with PCO2 increase. The H+ ions bind to hemoglobin and decrease it's affinity for oxygen, this is called the bohr effect. But the PCO2 is not the main driving force of oxygen unbinding.

3 0
2 years ago
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