Mitochondrial disorders can be caused by mutations in all the following except:

A. cytoplasmic DNA
B. mitochondrial DNA
C. nuclear DNA


Answer: A

Biology & Microbiology

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The DNA Pol III enzyme can use mRNA to make a cDNA strand

Indicate whether the statement is true or false

Biology & Microbiology

Which of the following statements best describes the differences between snakes and lizards?

A. All snakes lack eyelids and all lizards have eyelids. B. All snakes lack external ear openings and all lizards have external ear openings. C. Some snakes are venomous and no lizards are. D. All snakes lack limbs but all lizards have limbs. E. None of the other choices are foolproof and combinations of characteristics are sometimes necessary to distinguish lizards and snakes.

Biology & Microbiology

A pigment produced by an opportunistic pathogen that contributes to tissue damage is

A) pyocyanin. B) streptokinase. C) M protein. D) lipase. E) hyaluronidase.

Biology & Microbiology

Juan has influenza and has aches, pains, and a fever. His mother, a physician, tells him to take an antipyretic. What is she telling him to take?

A. an antihistamine B. acetaminophen, like tylenol C. herbal tea with honey D. an antiviral drug, like tamiflu E. an antibiotic, like erythromycin

Biology & Microbiology