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lina2011 [118]
2 years ago
7

A scientist set up an experimental ecosystem in a sealed room with no windows. The experimental ecosystem has plants, and animal

s that eat those plants. The scientist can control whether the room is light or dark with a light switch outside the room.
The amount of carbon in the air of the ecosystem started out low. Then the amount of carbon in the air started to increase. Is the increase because the scientist switched the light on or because she switched the light off? What happened to the number of energy storage molecules in the living things?

The scientist . . .



a
switched the light off, and the number of energy storage molecules in the living things decreased.

b
switched the light off, and the number of energy storage molecules in the living things increased.

c
switched the light on, and the number of energy storage molecules in the living things increased.

d
switched the light on, and the number of energy storage molecules in the living things decreased.
Biology
1 answer:
Aleonysh [2.5K]2 years ago
3 0

Answer:

Option-A

Explanation:

In the given question, the artificial ecosystem was prepared by the scientist which included the animals and plants. The light and dark conditions were controlled by a switch and bulb.

In the beginning, the amount of Carbon in the form of carbon dioxide was low due to the utilization of carbon dioxide by plants to perform photosynthesis. Then the amount of carbon dioxide increased in the atmosphere, the reason could be due to less consumption of carbon dioxide. The carbon dioxide is not uptake by plants during night conditions when photosynthesis process slowed down or stops.

Therefore, the dark condition was created by the scientist by switching off the lights and the number of energy molecule decreased as no photosynthesis was occurring.

Thus, Option-A is the correct answer.

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<u>It is related to the X chromosome and it is recessive for females</u>, this mean they need both affected alleles to develop the trait. <u>Males only need one recessive allele because they only have one X chromosome</u>. This means that females need both parents to be at least carriers (although one or both can also have the disease or both recessive alleles). While males inherit it only from the mother, either she is a carrier (one recessive allele) or she has the disease (both recessive alleles). Then the mother passes the X chromosome with the affected allele to the son, and that son only receives the Y chromosome from the father, which does not have the gene that determines this disease.

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