3 checkpoints of the cell cycle

What will be an ideal response?


1. In G1, prior to the S stage
2. in G2 prior to the M stage
3. near the end of mitosis

Biology & Microbiology

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Antigen exposure is necessary to

A) induce genetic hypermutation in B cells with productive antibody genes. B) stimulate B cell to differentiate to plasma cell. C) stimulate B cell to produce soluble antibodies. D) stimulate B cell differentiation, antibody production, and genetic hypermutation of antibody genes.

Biology & Microbiology

Who was NOT involved in working out the structure

of DNA? a. Avery b. Watson c. Wilkins d. Franklin e. Chargaff

Biology & Microbiology

Assuming resting conditions at sea level, what is the partial pressure of oxygen in alveoli?

A)46mmHg B)100mmHg C) 160 mm Hg D) 80 mm Hg E) 40 mm Hg

Biology & Microbiology

Insertion sequences are ________.

A. are discrete genetic elements bounded at both ends with inverted repeats B. capable of transposition C. normally relatively short (700 to 1,650 bp) D. All of the choices are correct.

Biology & Microbiology