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Sedaia [141]
3 years ago
7

A. If you have several samples of liquid and are told that one contains living organisms,

Biology
1 answer:
AURORKA [14]3 years ago
4 0

Answer: (Aerobic and anaerobic respiration)

Explanation:

Respiration by living organisms can be investigated by carrying out experiments to show the production of carbon dioxide and heat.

Investigating carbon dioxide production

Limewater turns milky in the presence of carbon dioxide. It can be used to show that exhaled air contains more carbon dioxide than inhaled air.

Carbon dioxide dissolves in water to form a weakly acidic solution. Hydrogencarbonate indicator is used to show the presence of carbon dioxide in solution. It is:

red at neutral pH (no carbon dioxide)

yellow at low pH (carbon dioxide present

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3 years ago
During the _______ phase, the muscle is returning to resting length.
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Answer:

The correct answer is: Eccentric phase.

When talking about movement, we are talking about the activation of muscle fibers in order for this process to happen. In order for this to happen, motor neurons must activate the phases of muscle excitation, contraction and relaxation, so that the sarcomeres, and thus the fibers, can generate movement.

In essence, there are three stages, or phases, to complete muscle movement:   the concentric phase, which is when the muscle fibers are excited and begin the process of contraction. This means the muscle fibers will contract and generate movement, generating a shortening. Then we have the isometric stage, a moment in which there is no longer any more shortening of the muscle fibers, so basically, the movement is held and there is no further contraction, but neither is there relaxation of the muscle fibers. Finally, we have the eccentric phase. This phase is characterized precisely because it is the moment when the muscles begin to return to their resting position.

3 0
3 years ago
Which of the following does eccentricity describe
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What is the rest of the question
4 0
3 years ago
Which kind of electrical charge is found on a hydrogen atom of a polar water molecule
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<span />

8 0
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Due to a mutation in the HEXA gene, a substance called GM2, normally present in the tissues and nerve cells of the brain, accumu
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Answer:

Lysosomes.

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3 years ago
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