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eimsori [14]
3 years ago
6

What three parts make up the nervous system?

Biology
2 answers:
oee [108]3 years ago
8 0

Answer:brain

Spinal cord

Explanation: the two make up the nervous system

Gnoma [55]3 years ago
4 0

Answer:

spinal cord, brain

Explanation:

hope it helps

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Which of these bests explains the difference between the way animals and plants exchange gases with their environments?
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Answer: Animals use only respiration, while plants use both photosynthesis and respiration.
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3 years ago
3. Suppose you are viewing a sample from a PURE culture and observe both red and purple cocci. What are the possible problems th
Scorpion4ik [409]

Answer:

The culture might not be stained properly or the culture might be too old.

Explanation:

Gram staining is done to differentiate between gram-positive and gram-negative bacteria according to the difference in their cell wall. In gram staining, the gram-positive bacteria appears violet and gram-negative bacteria appear pink in color.

Therefore if a pure culture contains have both red and purple cocci that it can be concluded that the gram stating was not done properly like too much destaining was done or too much safranin was used or maybe the culture is too old so that cell wall of some bacteria degrades.

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2 years ago
Why do you think leewenhoek was excited about what he saw
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2 years ago
In a dihybrid cross of two heterozygous individuals, you expect a 9:3:3:1 phenotypic ratio in the offspring, but observe a ratio
almond37 [142]

Answer:

e. Epistatic interaction of the two genes

Explanation:

The 9:7 ratio is typical of the Duplicate Recessive Epistasis.

The expected phenotypic ratiio of the offsrping of a dihybrid cross is:

9 A_B_

3 A_bb

3 aaB_

1 aabb

In the Duplicate Recessive Epistasis, the A_bb, aaB_ and aabb individuals all have the same phenotype, making for the ratio 9:7. What those three genotypes have in common is that in all of them at least one of the two genes  is homozygous recessive (either <em>aa</em> or <em>bb</em>).

This usually happens one the products of genes A and B are enzymes of the same metabolic pathway.

Whenever both A and B are present, the pathway can produce the final product and a certain phenotype. However, if any of the dominant alleles is missing, the enzyme is not produced and therefore the final product of pathway is not produced, giving the other phenotype.

3 0
3 years ago
Sodium is an underconsumed nutrient<br> True<br> False
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I think the statement is false. Sodium is present in table salt (Sodium chloride) that everyone consumes daily in almost every meal. For example the three students that are under consumed by many Americans  women are folic acid, calcium and iron. Sodium intake in America is so excessive, more than 75% of the sodium Americans eat comes from some processed, prepackaged and restaurant foods.
5 0
3 years ago
Read 2 more answers
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