If a person turns their ankle, how would one determine if damage to the tissue in the ankle has occurred?
a. The ankle is red.
b. The ankle is red, swollen, and warm to the touch.
c. The ankle is very warm to the touch.
d. The ankle swells.
Ans: b. The ankle is red, swollen, and warm to the touch.
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Based on estimates that consider the NPP of Earth and human use of these resources, what is the carrying capacity of people calculated by scientists?
A) 6.6 billion B) 10.6 billion C) 21 billion D) 40 billion
If a bacterial protein contains 150 amino acids, there would be how many codons in the specification to construct it?
A. 50 B. 150 C. 450 D. One cannot tell what the answer is.
There is a mutation in the operator of the trp operon in a cell such that the trp repressor is unable to bind to the operator. If tryptophan is added to the cell, what will happen?
A) Tryptophan will bind to the repressor, and trp enzymes will be produced. B) Tryptophan will bind to the repressor, and trp enzymes will not be produced. C) Tryptophan will not bind to the repressor, and trp enzymes will be produced. D) Tryptophan will bind to the operator, and trp enzymes will be produced.
Viral-infected human cells often send out special proteins that serve as an early warning system to uninfected cells. In response, the uninfected cells develop antiviral proteins that protect them
The early warning proteins sent out by viral-infected cells are A) complement. B) interferon. C) antibodies. D) antigens. E) antibiotics.