A given medium can be either selective or differential but not both.
Answer the following statement true (T) or false (F)
False
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Shortly after ingesting a big plate of carbohydrate-rich pasta, you measure your blood's hormone levels. What results would you expect, compared to before the meal?
A) high insulin, low glucagon B) low insulin, low glucagon C) high insulin, high glucagon D) low insulin, high glucagon E) low insulin, no change in glucagon
0.2 mls of a 10-4 dilution of a virus preparation yields 90 plaques. What is the number of PFU per ml in the undiluted virus preparation?
A. 9.0 × 108 B. 4.5 × 106 C. 4.5 × 107 D. 9.0 × 105
An undifferentiated cell of a zygote is known as:
A. a stem cell. B. a single-celled organism. C. a feeding cell. D. a reproducing cell.
The first species of a community are __________. Fill in the blank(s) with the appropriate word(s)