Which enzyme is a topoisomerase?

A. DNA polymerase I
B. DNA polymerase III
C. DNA gyrase
D. DNA ligase


Answer: C

Biology & Microbiology

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Autism, Alzheimer disease, Parkinson's disease, and schizophrenia are all associated with ____

a. copy number variants b. fragile sites c. inversions d. deletions e. translocations

Biology & Microbiology

Sampling error is best defined as ________

a. a difference between results from a subset and results from the whole b. an error that occurs due to taking the wrong samples c. an inconsistency in data due to careless measurement d. an error that occurs primarily when samples are too large

Biology & Microbiology

Studies suggest that to become malignant, neoplasms must establish

a. contact inhibition. b. a blood supply. c. a nutrient source. d. a second genetic mutation. e. uncontrolled mutations.

Biology & Microbiology

How does termination of translation take place?

A) The end of the mRNA molecule is reached. B) A stop codon is reached. C) The cap is reached. D) The poly-A tail is reached.

Biology & Microbiology