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:
Not too sure about this but I think it would cause extinction
Explanation:
Without reproduction, there would be no offsprings and eventually the older generation of that species would die out.
Answer:
the frequency of individuals with Type B blood in the population is 0.1977
Explanation:
Given:
Frequency of A allele is p = 0.24
Frequency of the individuals with blood type O is r = 0.38
Question: What is the frequency of individuals with Type B blood in the population, fB = ?
You need to apply the Hardy-Weinberg Equilibrium:
p²+q²+r²+2pq+2pr+2qr = 1
Here,
p, q and r are the frequencies of the alleles
Calculating the frequency of the allele q:
q = 1-p-r = 1-0.24-0.6164 = 0.1436
Frequency of individuals with type B blood:
