Answer:
(a) negative feedback.
Explanation:
A negative feedback mechanism operates in the direction of maintaining the homeostasis. Any change from the defined range of internal conditions of the body is sensed as a stimulus. It triggers a response that restores the original range of the internal condition. This is called a negative feedback mechanism. For example, when the body temperature rises, the blood vessels present near the skin surface dilate to lose more heat to the environment. This is one of the negative feedback produced against raised body temperature.
<span>The repolarization of cardiac muscle is due to closure of calcium (Ca) channels and potassium (K) exiting the cell when additional voltage gated K channels open.
Due to these changes within the heart, repolarization has to happen. This process refers to returning the cardiac muscle to its resting state, and the opposite process is depolarization.
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Chloroplasts are organelles found in plant cells and eukaryotic algae that conduct photosynthesis.
Answer:
C
Explanation:
recessive traits can only be seen when there is no dominant trait present.
The ability of an organism to maintain internal conditions is called <em>C homeostasis </em>
