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maks197457 [2]
3 years ago
14

The pulmonary semilunar valve guards the entrance to the

Biology
1 answer:
cestrela7 [59]3 years ago
7 0

Answer:

<h2>pulmonary trunk</h2>

Explanation:

The pulmonary valve is an important semilunar valve and found in the heart between the pulmonary artery and the right ventricle. This valve contains three cups that are responsible for the guarding of the pulmonary trunk. The pulmonary trunk is an important vessel of the heart that arises from the right ventricle and plays an important role in the circulation of the deoxygenated blood. The pulmonary trunk is called the main pulmonary artery.

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Evolution can be described as the change in __________ frequencies of a __________ over time.
Tresset [83]

Explanation:

In population genetics, the term evolution is defined as a change in the frequency of an allele in a population. ... The allele frequency within a given population can change depending on environmental factors; therefore, certain alleles become more widespread than others during the process of natural selection.

3 0
3 years ago
If the amount of DNA in a gamete of an organism is n, is the amount of DNA in the body cells of that organism equal to 1/2 n, n,
ira [324]
 2n because when 2 gametes of n amount of DNA fertilise together they make an organism that is similar to its parents and have the total amount of DNA as 2n, just like parents. 
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3 years ago
Gunther touched a hot object and received a minor burn. How did the skeletal system help prevent further damage? The skeletal sy
gtnhenbr [62]

Answer:

The Skeletal system helped him move his hand away from the hot object.

Explanation:

The Skeletal system consists of our skeleton or the bones. The other options would be correct if the question asked about the<u> nervous system</u> instead of the skeletal system.

4 0
3 years ago
Molecular anthropology ___________________ Question 1 options: uses genetic analysis of a DNA sequence to assess evolutionary li
kari74 [83]

Answer:

The correct answer is ''uses genetic analysis of a DNA sequence to assess evolutionary links.''

Explanation:

Molecular anthropology is a relatively recent branch, it refers to the study of biological phenomena (genetic study) at molecular levels, that is, biochemical, it allows us to understand and expand our knowledge about the evolution of the species and the complex phenomena of microevolution . It is closely related to other fields of anthropological study, among which we can mention primatology and genetics.Through molecular anthropology we are more aware of kinship, therefore, we can know human evolution over the centuries .

7 0
3 years ago
The diagram represents the functional unit of a nervous system. Which structure secretes a neurotransmitter? 1. structure A 2. s
maks197457 [2]
Can't see the structures so we can't answer your question
8 0
3 years ago
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