Answer: Adrenal gland
Explanation: It is an automatic response known as the 'Fight or Flight response, that is stimulated by our adrenal gland that is in our endocrine system produces adrealine.
These glands are located above the kidneys, and they secrete adrelaine when a person is angry or afraid. As in this situation, you see that the person is most likely to be afraid.
Adrelaine causes increase in heartbeat and blood pressure, and produces other substances for instant energy. This is when the situation, as mentioned before, 'Flight or fight situation' comes in hand, which is, it prepares the person to run away, or to fight from a dangerous situation.
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Evaporation or transpiration (a type of evaporation)
Answer:
Because different cells are needed for various things. One single cell cannot do everything by itself.
Explanation:
Answer:
Two gametes end up with 30 chromosomes, one gamete will have 31 and one will have 29.
Explanation:
During meiosis, a single diploid cell divides into four haploid cells with half the chromosome number than the parent cell.
During meiosis I, homologous chromosomes separate and the chromosome number in the two daughter cells goes down by half. During meiosis II, the "sister" chromatids separate, and the chromosome number in the respective daughter cells remains the same.
Non-disjunction of a single dyad in meiosis II causes that one of the daughter cells will have an extra chromosome, and another will be lacking one. The two other gametes will be normal.
I drew a simple example of what would happen during meiosis of a 2n=4 cell if there was non-disjunction in a single dyad during meiosis II.
Answer:
The first one and second one
Explanation: