Kidneys, Bone Marrow, and it Produces red blood cells.
<span>Genotype is genetic and phenotype is environmental. An organisms genotype is total genome determines its characters. Genome is the total genes for all the characters. Its outcome is called phenotype. It is greatly influenced by the environemental factors. Same genotype may produce different phenotypes in different environments.</span>
Answer:
Calcitonin stimulates the kidneys to absorb calcium when calcium levels are too low, while parathyroid hormone stimulates the kidneys to excrete calcium when calcium levels are too high.
Explanation:
what are answer choices? if you could let me know in the comment section i’d be happy to help.
Where Ao = starting amount, At = amount after time t, and k = rate constant
<span>You are given that the half-life is 33 seconds </span>
<span>Calculate the rate constant </span>
<span>ln(2/1) = kx33 sec </span>
<span>0.693 = kx33 </span>
<span>k = 0.0210 s^-1 </span>
<span>Now calculate the amount left after 43.2 sec </span>
<span>ln(100%/A1%) = 0.0210 x 43.2 </span>
<span>ln(100/A1) = 0.9074 </span>
<span>100/A1 = 2.478 </span>
<span>A1 = 40.4%</span>