DNA polymerases require which of the following elements to replicate DNA?
A. A ribosome, a template, an RNA polymerase
B. A source of energy, an RNA strand, a ribosome
C. A template, a primer, a source of energy
D. A source of energy, a template, an RNA polymerase
Answer: C
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The transfer of DNA fragments from a dead cell to a live, competent recipient cell that results in a changed recipient cell is termed ________.
A. transduction B. conjugation C. transformation D. mitosis E. transmission
Meiotic cell division replicates a cell's DNA and then divides .
A. once; once B. once; twice C. twice; once D. twice; twice E. None of the answer choices is correct.
Which of the following is a characteristic of
the plasma membrane?
a. it controls the contents of the cell b. the main lipid of a cell membrane is cholesterol c. carbohydrates carry out most of the cell’s dynamic functions d. it encloses a jellylike mixture called a cytoplastic reticulum e. all of these are characteristics of plasma membranes
Why are double-blind experiments used?
A) The results will be more biased. B) The results will be more controlled. C) The results will be more objective. D) The results will be more statistically significant.