The answer would be:
<em><u>D. Insulin</u></em>
Insulin is a chemical messenger that is responsible for the regulation of blood glucose levels. It is manufactured in the pancreas and secreted by the beta cells as a response to glucose. When glucose levels in blood plasma increase, insulin is secreted to stimulate glucose uptake.
Answer:
<u>C) proteins with gain-of-function mutations</u>
Explanation:
<u>Gain-of-function mutations: </u>In biology, the term "gain-of-function mutation" is described as one of the different types of mutation in which the altered or changed "gene product" consists of an entirely new pattern or molecular function associated with gene expression. However, the "gene-of-function mutations" are being always considered as "Semidominant or Dominant".
<u>In the question above, the correct answer is option C.</u>
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Oil
renewable resources have a infinite supply
air pollution has no demand
The sequence of impulse through the cardiac conduction system starts from SA node passes to AV node to atrioventricular bundle fibers and finally to Purkinje fibers.
Heart is an organ that receives oxygenated blood form lungs and deoxygenated blood from different parts of body. Oxygenated blood is transported to different organs and deoxygenated blood is transported to lungs for oxygenation.
Now, to perform this transportation, the auricles and ventricles of heart contract and relax. In order to contract and relax, impulse generation is required, which begins at SA node or Sinoatrial node. It is also referred to as pacemaker of the heart. SA node contracts the atria and the impulse transfers to AV node or Atrioventricular node.
This is followed by transfer of impulse to atrioventricular bundle fibers which further passes it on to Purkinje fibres for ventricular contraction. Now the blood is sent to lungs and aorta as per it's oxygen status.
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