When triglycerides are hydrolyzed, they are broken down into glycerol and fatty acids. The fatty acids are further
broken down into two-carbon fragments in a process called fatty acid oxidation. At which pathway do these fragments
enter respiration?
a. glycolysis
b. pyruvate oxidation
c. citric acid cycle
d. oxidative phosphorylation
e. carbohydrate hydrolysis
ANSWER: c
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Your father is heterozygous for the recessive disorder phenylketonuria (PKU). You know your mom
has two "good" alleles. What is the probability that you will have the disorder?
a. 0% but you will have a 50% chance of passing the "bad" allele on to your children b. 0% and you don't need to worry about passing the "bad" allele on to your children c. 25% for you and 25% for your children d. 50% for you and 50% for your children e. 50% for you and 25% that you'll pass the "bad" allele on to your children
Acquired variations that are favorable to the survival of an organim tend to be present in greater
frequency in the next generation of those organisms. _________________ Indicate whether the statement is true or false.
Muscle cells shorten because
A. they get bigger in diameter. B. sodium ions flow along the surface of the actin molecule. C. myosin molecules shorten. D. actin molecules slide by myosin molecules.
Embryonic stem cells are different from primary cell cultures or permanent cell lines derived from a tissue in that they are capable of
a. generating many cell types. b. growing and dividing. c. synthesizing their own DNA. d. transporting nutrients across their plasma membrane.