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By the transpiration stream, in the xylem.The xylem is the tube in the plant in which water and solutes are transported from the plant roots to the stem and leaves. The xylem allows capillary action, whic...
(1) An impulse causes calcium ions to enter the axon. (2) Vesicles fuse with the presynaptic membrane. (3) This causes the release of acetylcholine. (4) Acetylcholine diffuses across the synaptic cleft. (...
The heart pumps the blood into the arteries with a very high pressure and the blood can therefore travel through them to the tissue of interest. The arteries are also very elastic, therefore they can puls...
crossing over and random orientation of chromosomes occurs in Meiosis I;o Random orientation: ▪ Random orientation of homologous chromosomes creates genetic variation. ▪ There are over 8 million ways that...
Skeletal muscle has a variable requirement for energy (ATP) which depends on how hard the muscle is working. During severe exercise, when demand for ATP is high, the muscle can become tem...
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