Answer:
Organisms maintain dynamic homeostasis through behavioral and physiological mechanisms. Which of the following statements is an accurate explanation of a negative feedback mechanism used by animals to regulate body temperature? C) A ground squirrel's hypothalamus detects changes in environmental temperatures and responds by activating or suppressing metabolic heat production
Explanation:
The temperature-regulating center of vertebrate animals is located in the hypothalamus. A ground squirrel's in there detects changes in environmental temperatures and responds by activating or suppressing metabolic heat production. Maintenance of homeostasis usually involves negative feedback loops.
Answer:
<h2>B. Fatty acid synthesis in the cytosol and fatty acid oxidation in the mitochondria could occur simultaneously.</h2>
Explanation:
Carnitine acyltransferase I, is a mitochodrial enzyme also known as Carnitine palmitoyltransferase I (CPT1).
The acyl group is transferred to carnitine by the cytoplasmic form of the enzyme by Carnitine acyltransferase I
Malonyl coA would no longer inhibit fatty acid entry into the mitochondrion and beta oxidation, so there might be a futile cycle of simultaneous fatty acid synthesis in the cytosol and fatty acid breakdown in mitochondria.
The antibodies to the HIV virus may take up to three months to appear in the blood of the infected person.
Therefore, the second blood test is necessary three months after a person thinks that he/she has been exposed to HIV to check the presence of these antibodies and confirm whether the person is infected or not.
Neutral potassium also contains 19 electrons and 21 neutrons.
