Penicillin is effective against bacterial infections because it interferes with the construction of

new __________ in the bacteria.



a. DNA
b. cell walls
c. endoplasmic reticulum
d. mitochondria


B

Biology & Microbiology

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Mules are unusual hybrids because they

a. are weak. b. have a low survival rate. c. are robust. d. are sterile. e. produce sterile offspring.

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Which of the following organisms is not an osteichthyan?

a. Bird b. Shark c. Cod d. Coelacanth e. Human

Biology & Microbiology

Provide a reason for the ecological importance of pelagic Bacteria and Archaea

What will be an ideal response?

Biology & Microbiology

The tissue that produces cells to thicken a root or stem is/are the

A. apical meristem only. B. apical and lateral meristems. C. tracheid. D. vascular bundle. E. lateral meristem only.

Biology & Microbiology