Before the development of photosynthesis and as ancient cells became crowded, there was probably a major competition for:
A) enzymes. B) water. C) oxygen gas. D) organic molecules.
Answer: D
Biology & Microbiology
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In the intestinal tract, Entamoeba histolytica
A. lives as a commensal in the lumen of the intestine. B. can invade the host tissue. C. can undergo excystation in the small intestine. D. All of the choices are correct.
Biology & Microbiology
Which of the following is/are false?
What will be an ideal response?
Biology & Microbiology
Which of the following is the most common form of transmission for impetigo?
A. Mechanical vectors B. Direct contact C. Body fluids D. Fomites E. Blood
Biology & Microbiology
Write an explanation for why a bacteriophage, a virus that infects bacterial cells, would be a good cloning vector
What will be an ideal response?
Biology & Microbiology