During the mitotic spindle checkpoint, ____

a. cells are in anaphase
b. cells arrest if chromosomes are attached properly to the mitotic spindle
c. cells become irreversibly committed to S phase
d. proper spindle attachment to chromosomes is assessed
e. cells enter G0


ANSWER: d

Biology & Microbiology

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Which statement is true?

a. Translation cannot proceed until eIF-2 is phosphorylated. b. eIF4F bonds to the 40S ribosome after GTP is hydrolyzed. c. Phosphorylation of a protein can alter RNA stability. d. GTP bonds to the 5’ cap of the mRNA during translation.

Biology & Microbiology

The smallest cell structure that would most likely be visible with a standard (not super-resolution) research-grade light microscope is a _____

A) mitochondrion B) microtubule C) ribosome D) microfilament

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A clone is

A) genetically identical cells derived from a single cell. B) a genetically engineered cell. C) a taxon composed of species. D) a mound of cells on an agar medium. E) None of the answers is correct.

Biology & Microbiology