The energy of electron transport serves to move (translocate) protons to the outer mitochondrial compartment. How does this help the mitochondrion produce ATP?
A) The hydrogen ions (protons) are transferred to oxygen in an energy-releasing reaction.
B) The translocation of protons sets up the electrochemical gradient that drives ATP synthesis in the mitochondria.
C) The protons pick up electrons from the electron transport chain on their way through the inner mitochondrial membrane.
D) The protons receive electrons from the NAD+ and FAD that are accepted by electrons in glycolysis and the citric acid cycle.
Answer: B
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Which of the following statements is incorrect regarding protein structure?
A. The folding of a protein to form its active site creates its tertiary structure. B. The sequence of nucleotides determines the primary structure of a protein. C. Proteins, such as antibodies that are comprised of multiple polypeptide chains, have quaternary structure. D. Beta-pleated sheets are a type of protein secondary structure.
In birds and reptiles, waste ammonia is usually converted to ____
a. uric acid b. protein c. carbohydrates d. carbon dioxide e. glucose
Manx cats have no tails. When two Manx cats are bred together there is always a one third chance that a kitten will have a tail. When a Manx cat is bred to a cat with a normal tail there is a one-half chance that a kitten will have a tail
Which of the following is the best explanation for this? A) The Manx genotype exhibits variable expression. B) The Manx phenotype is dominant, but the allele is a recessive lethal. C) The Manx phenotype is dominant epistatic. D) The Manx phenotype is caused by gene interactions. E) The Manx phenotype is a result of heteroplasmy.
An increase in urine production could cause
A. an increase in blood volume. B. a decrease in blood volume. C. an increase in blood pressure. D. both an increase in blood volume and an increase in blood pressure. E. both a decrease in blood volume and an increase in blood pressure.