Answer:
The correct option is E) Contraction still occurs because Ca2+ can enter the cell directly through Ca2+ channels in the plasma membrane and bind to calmodulin.
Usually, the calcium ions are released from the sarcoplasmic reticulum of a cell during a muscle contraction, but if those are blocked, the contractions is an cell can still arise through the calcium ions which are present in the cell membrane of a cell.
Answer:
The cell is the basic structural and functional unit of life. Cells are independent, single-celled organisms that take in nutrients, excrete wastes, detect and respond to their environment, move, breathe, grow, and reproduce.
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What is the basic unit of structure and function in plants and animals?
Cell Theory
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All living things are made of cells. The cell is the basic unit of structure and function in all living things.
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Answer:
B. False
Explanation:
Orthologs are genes that find their origin in vertical descent,, paralogous on the other hand, are genes that are related via duplication events. <em>In the case of human hemoglobin, their genes originated by duplication from an common ancestral globin gen, therefore they are paralogous.</em>
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Answer:
The proximal convoluted tubule, arising from the Bowmans capsule, traverses within the cortex. ... On the other hand, the distal convoluted tubule has a straight part continuous with the ascending limb of the loop of Henle and a convoluted part lying in the cortex .
Explanation:
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