An exposure to __________ protects against infection with smallpox.

a. cowpox
b. penicillin
c. chemotherapy
d. bacteria
e. normal microbiota


Ans: a. cowpox

Biology & Microbiology

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Roses are red because of which pigment?

a. anthocyanin b. chlorophyll b c. beta-carotene d. phycoerythrobilin e. chlorophyll a

Biology & Microbiology

The enzyme ?-galactosidase catalyzes what reaction?

A) allolactose ? glucose + lactose B) lactose ? glucose + fructose C) lactose ? galactose + glucose D) glucose ? galactose + lactose E) galactose ? glucose + lactose

Biology & Microbiology

DNA and histones form beadlike globules known as __________.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

digests fat

What will be an ideal response?

Biology & Microbiology