EMB agar preferentially selects for the growth of ________ bacteria

A) gram-positive
B) gram-negative
C) gram-variable
D) both gram-positive and gram-negative


Answer: B

Biology & Microbiology

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Which of the following sequence of events of fertilization is in the proper order?

A. acrosomal reaction, binding of sperm to egg membrane, fast block to polyspermy, increase in egg cytosolic calcium, and then the slow block to polyspermy B. binding of sperm to egg membrane, acrosomal reaction, fast block to polyspermy, slow block to polyspermy, and then an increase in egg cytosolic calcium C. binding of sperm to egg membrane, acrosomal reaction, fast block to polyspermy, increase in egg cytosolic calcium, and then the slow block to polyspermy D. acrosomal reaction, fast block to polyspermy, binding of sperm to egg membrane, increase in egg cytosolic calcium, and then the slow block to polyspermy E. acrosomal reaction, fast block to polyspermy, binding of sperm to egg membrane, slow block to polyspermy, and then an increase in egg cytosolic calcium

Biology & Microbiology

Understanding the role of telomerase has helped scientists understand the number of times a cell can divided. If scientists could control the telomerase activity in specific cells, they could potentially stop

A. the formation of cancer. B. aging of cells. C. All of the answer choices are correct. D. meiosis. E. aerobic respiration.

Biology & Microbiology

The outer memberane of the nucleus is continuous with the membrane of which organelle?

A.) mitochondrion B.) gogli apparatus C.) ER D.) peroxisome E.) endosome

Biology & Microbiology

All of the members of an interbreeding group of organisms in a local area make up a(n)

A. race. B. population. C. ecosystem. D. community.

Biology & Microbiology