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ivolga24 [154]
2 years ago
11

Crossing-over results in what observable change in our cells?

Biology
1 answer:
scoundrel [369]2 years ago
8 0

Answer:

A

Explanation:

new combinations of alleles from both parents

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2. Empirical evidence is based on opinion and personal experiences. a. true b. false
Andrew [12]

Answer:

false

Explanation:

"Empirical" means "based on observation or experience," according to the Merriam-Webster Dictionary. Empirical research is the process of finding empirical evidence. If there are flaws in the way that empirical data is collected, the research will not be considered valid.

3 0
3 years ago
HELP What pattern of inheritance is shown?
RideAnS [48]

Answer:

I'm not sure sorry what type of question Is it?

5 0
3 years ago
If a mutation occurs such that photosystem ii no longer functions as efficiently as it should, what might be most directly affec
ivolga24 [154]

Out of the following given choices;

a) The amount of oxygen produced

b) The rate of ATP synthesis by ATP synthase in the chloroplast

c) The rate at which NADPH is produced

d) The rate at which the protons are transported into the thylakoid

The answer is; A

The photosystem captures energy from sunlight and uses it to split a water molecule.   After splitting the water molecule (by taking an electron), the protein complex transports the electron to plastoquinone. The splitting of water molecules results in evolving of oxygen molecules. The hydrogen is what is used to reduce carbon dioxide to glucose.


5 0
3 years ago
Read 2 more answers
Draw a diagram of Nitrogen cycle
mart [117]

Answer:

I draw it

Explanation:

but excuse that cnt send <u>i</u><u>t</u><u>.</u>

5 0
3 years ago
Briefly explain how the volume in your thoracic cavity changes during inhalation and exhalation. Be sure your answer includes ho
Dima020 [189]

Answer:

Both inhalation and exhalation depend on pressure gradients between the lungs and atmosphere, as well as the muscles in the thoracic cavity.

Explanation:

The thoracic cavity, or chest cavity, always has a slight, negative pressure which aids in keeping the airways of the lungs open. During the process of inhalation, the lung volume expands as a result of the contraction of the diaphragm and intercostal muscles (the muscles that are connected to the rib cage), thus expanding the thoracic cavity. Due to this increase in volume, the pressure is decreased, based on the principles of Boyle’s Law. This decrease of pressure in the thoracic cavity relative to the environment makes the cavity pressure less than the atmospheric pressure. This pressure gradient between the atmosphere and the thoracic cavity allows air to rush into the lungs; inhalation occurs. The resulting increase in volume is largely attributed to an increase in alveolar space because the bronchioles and bronchi are stiff structures that do not change in size.During this process, the chest wall expands out and away from the lungs. The lungs are elastic; therefore, when air fills the lungs, the elastic recoil within the tissues of the lung exerts pressure back toward the interior of the lungs. These outward and inward forces compete to inflate and deflate the lung with every breath. Upon exhalation, the lungs recoil to force the air out of the lungs. The intercostal muscles relax, returning the chest wall to its original position. During exhalation, the diaphragm also relaxes, moving higher into the thoracic cavity. This increases the pressure within the thoracic cavity relative to the environment. Air rushes out of the lungs due to the pressure gradient between the thoracic cavity and the atmosphere. This movement of air out of the lungs is classified as a passive event since there are no muscles contracting to expel the air.

5 0
3 years ago
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