Which of the following are external regulators of the cell cycle?

A) cyclins
B) growth factors
C) mitotic spindles
D) cancer cells


Ans: B) growth factors

Biology & Microbiology

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Four of the five answers listed below are produced by the same lobe of the pituitary. Select the

exception. a. antidiuretic hormone b. prolactin c. corticotropin d. somatotropin e. luteinizing hormone

Biology & Microbiology

Which microorganism requires the low pH inside a phagolysosome in order to reproduce?

a. Haemophilus influenzae b. Coxiella burnetii c. Streptococcus pyogenes d. Streptococcus pneumoniae

Biology & Microbiology

Which type of plankton are tiny and aquatic heterotrophs?

A. Zooplankton B. Phyplankton C. Tryplankton D. Metaplankton E. Holoplankton

Biology & Microbiology

Unlike white blood cells, mature red blood cells lack a(n) ________

Fill in the blank(s) with correct word

Biology & Microbiology