A virus is combined with a host cell in molten nutrient agar and then poured over a sterile nutrient agar plate. After the agar solidifies and the plate is incubated you see distinct clear zones in the agar. What do these results mean? A. The virus can replicate in nutrient agar. B. The virus can infect the host cells. C. The virus is unable to infect the host cells. D. The nutrient agar plate was contaminated in the process of setting it up.

The correct answer is B. The virus can infect the host.

Explanation:

mammal

explanation:

"menstrual cycle is a complex cycle that consists of several processes. order of occurrence of steps in menstrual cycle are as follows:

1. high progesterone levels maintain the endometrium lining of the uterus.

2. endometrium lining breaks down and low levels of estrogen stimulate the pituitary to release fsh and lh.

3. fsh and lh stimulates the follicles to develop and the oocyte to produce estrogen.

4. rising estrogen levels suppress fsh production and development of other follicles.

5. a spike in lh causes follicle to rupture.

6. a breakdown of corpus luteum causes progesterone level to drop."