Answer the following statements true (T) or false (F)
1. During hibernation, a bear would be expected to be in the postabsorptive state in terms of nutrient utilization.
2. Triglycerides do not need to be chemically altered or broken down to cross the intestinal epithelium.
3. Animals have the ability to generate glucose from proteins during prolonged postabsorptive states.
4. The term "glucose sparing" refers to the increase in fat utilization seen in most tissues and organs during periods of low glucose availability.
5. Insulin stimulates glycogenolysis and gluconeogenesis by the liver.
1. TRUE
2. FALSE
3. TRUE
4. TRUE
5. FALSE
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Which of the following statements about the DNA in one of your brain cells is true?
A) Most of the DNA codes for protein. B) All of the genes of the genome are likely to be transcribed. C) Each gene lies immediately adjacent to an enhancer. D) Many genes are grouped into operon-like clusters. E) It is the same as the DNA in one of your heart cells.
If the p53 gene is damaged, a cell can behave as though there are which of the following?
a. more mutations b. apoptotic mutations c. no mutations d. proto-oncogene mutations.
What fleshy projection is an adaptation some fish have to lure prey in?
a. Barbel b. Antennae c. Photophore d. Appendage
Many of the antiviral drugs currently used to treat HIV/AIDS also interfere with an enzyme that helps mitochondria multiply. Treatment can therefore result in a decrease in the number of mitochondria found in certain tissues. Given this information, what might you expect to see in patients treated with antiviral drugs?
A. An increase in NADH dehydrogenase activity B. An increase in oxidative phosphorylation C. An increase in lactic acid levels D. An increase in phosphofructokinase activity