DNP is a chemical that has been used by people to lose weight. However, it is a dangerous option and has caused several people to die. DNP works in a fashion similar to that of brown fat. Based on this information, how would DNP cause weight loss and
death?
A) DNP must prevent food from being consumed aerobically, so cells instead perform fermentation, and lactate buildup is deadly.
B) DNP must increase the rate of substrate-level phosphorylation, causing NADH to be produced more quickly than it can be used by the electron transport chain.
C) DNP must block cells from using fats and proteins to make ATP.
D) DNP must increase metabolism of food by producing heat instead of ATP.
Answer: D
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Microtubules and microfilaments are said to be "dynamic" elements of the cytoskeleton. In this case, dynamic means that:
A. once individual microfilaments and microtubules have formed they can change shape and move around inside the cell. B. they are constantly changing and are never in the same place for very long. C. microtubules and microfilaments are assembled and disassembled and then reassembled again in a regulated manner.
Which of the following is NOT an effect of
cortisol?
a. causes liver cells to hydrolyze glucagon b. suppresses the uptake of glucose by body cells c. suppresses the hydrolsis of fats by adipose cells d. causes skeletal muscle cells to degrade proteins e. more than one of these is NOT an effect of cortisol
Similar body parts that reflect shared ancestry are
called __________. Fill in the blank(s) with the appropriate word(s).
The process of transcription takes place in the _____
Fill in the blank(s) with the appropriate word(s).