Peak amplitude of basilar membrane displacement
Answer:
The correct answer is B. generalism.
Explanation:
Mutualism is a symbiotic relationship wherein both organisms benefit from the other’s presence. Parasitism is a symbiotic relationship wherein one organism benefits at the expense of the other organism, which is harmed. Finally, commensalism is a symbiotic relationship wherein one organism benefits and the other is neither helped nor harmed. Generalism does not refer to a symbiotic relationship and thus is the correct response.
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Answer:
1. Inhibiting IP3 channels, leading to decreased Ca2 in the sarcoplasm and reduced contraction.
2. Increasing the relative activity of MLCP, leading to a decrease in tension.
3. Activating K channels, increasing K leaking out of the cell which hyperpolarizes it and decreases the likelihood of Ca2 entry.
Explanation
In smooth muscle, cyclic AMP (cAMP) mediates relaxation because cAMP inhibits a specific kinase required for myosin light chain protein (MLCP) phosphorylation, thereby triggering contraction in the smooth muscles. It has been shown that cAMP inhibits 1,4,5-trisphosphate (IP3)-dependent calcium ions (Ca 2+) release by activation of the cGMP-dependent protein kinase (PKG). PKG proteins act to modulate Ca2+ oscillations by stimulating sarcoplasmic Ca2+-ATPase membrane proteins, increasing Ca2+ in the sarcoplasmic reticulum stores and Ca2+ efflux from the cells, and activate voltage-gated potassium (K) channels, thereby leading to membrane hyperpolarization and reducing Ca2+ entry through Ca2+ channels.
Answer:
A hair follicle anchors each hair into the skin.
Explanation:
The hair bulb forms the base of the hair follicle. In the hair bulb, living cells divide and grow to build the hair shaft. Blood vessels nourish the cells in the hair bulb, and deliver hormones that modify hair growth and structure at different times of life.
Meiosis I creates 2 diploid cells and meiosis II creates 4 haploid cells.
