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3 years ago

Which of the following statements about insulin or its effects on the body are true?

1 answer:

3 0

2nd and 4th-
-The pancreas is considered a gland because it secrets a hormone called insulin
-Insulin binds to receptor proteins founding in the cell membranes of many types of body cells

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In the ocean, plants and other photosynthetic organisms take in carbon. This carbon is transferred through the food web into the

musickatia [10]

Answer:

C. Oceans are carbon sinks because they store more carbon than they emit.

Explanation:

Oceans are carbon sinks because they store more carbon than they emit. Most of the carbon is produced in the respiration process as well as burning of fossil fuels. This carbon moves to the atmosphere and dissolved into the ocean which is required by the vegetation of ocean. Due to this carbon, vegetation produced more food for the organisms. About 25% of all CO2 emissions are absorbed by the ocean. Source is the part of a plant where materials are produced e.g. leaves whereas Sink refers to the part of the plant where the substrate can be stored e.g. roots or stem for starch.

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3 years ago

In a population of plants, the allele for long stems (S) is completely dominant over the allele for short stems (s). If 35% of t

Sergio [31]

Answer:

The correct answer would be 48 percent.

It can be solved by using the Hardy-Weinberg equation.

p² + 2pq+ q² = 1

p + q = 1

where, p² represents homozygous dominant's frequency that is, SS in this case,

q² represents homozygous recessive's frequency that is, ss in this case,

2pq represents heterozygous dominant's frequency that is, Ss in this case.

p represents dominant allele's frequency and q represents the recessive allele's frequency.

Now, the percentage of homozygous recessive or short stems is 35%. Therefore, the frequency of homozygous recessive would be 0.35.

Thus, the value of q² = 0.35

So, q = $\sqrt{0.35}$ = 0.59 which is approximately equals to 0.6.

As p + q = 1 so, q = 1 - 0.6 = 0.4

The frequency of heterozygous (Ss) = 2pq = 2(0.6)(0.4) = 0.48

Hence, the frequency of heterozygous would be 48 percent.

8 0

3 years ago

Men can produce sperm throughout their adulthood because_____. (1pts)

kvasek [131]

<span>Men can produce sperm throughout their adulthood because their reproductive organs and glands are fully developed. During their childhood and adolescence the glands and organs are not functional for reproductive purposes.</span>

8 0

3 years ago

Which of the following best describes what happens in genetic therapy?

Sedbober [7]

Answer:

Healthy proteins are inserted into a patient since their DNA does not produce the right proteins.

Explanation:

4 0

3 years ago

How does the respiratory system in birds differ from the mammalian respiratory system?

DaniilM [7]

Answer:

Birds require high levels of oxygen and, therefore, high rates of gas exchange due to flight demands. Avian resting oxygen consumption is high compared to that of mammals and other vertebrates, and this increases even more during the flight.

Explanation:

Compared to mammals, birds have specific adaptations of the respiratory system that result in higher levels of oxygen exchange.

6 0

3 years ago