The gradual decline in men's testosterone levels in middle age can reduce their sex drive
The answer is C. The others have just one dominant and recessive allele.
The answer is B. Bacteria blooms and decreased underwater photosynthesis causes asphyxia, killing the fish.
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Answer:
Jacob and Monod were intellectually primed to draw the conclusions they did concerning regulation of the lac operon. In part, this was due to their fascination with mechanisms of enzyme regulation. They knew that the activity of some enzymes is regulated when their reaction product binds to the enzyme, changing its shape and therefore its activity. This knowledge allowed them to easily make the intellectual leap to propose B) allosteric regulation of the repressor
Explanation:
When we talk about the mechanisms of enzyme regulation, we refer to allosteric regulation of the repressor. The Allosteric control of transcriptional regulatory proteins allows organisms to react to changes in environmental and metabolic conditions. Also, it is s a thermodynamic phenomenon. When it binds one molecule, the affinity with which a protein binds to a second molecule is altered.
Answer:
Blood pressure is cardiac output versus resistance, especially in the capillaries.
Explanation:
When they get atherosclerosis, which is plaque in the arteries, there’s more resistance in the blood vessels and that raises blood pressure
