Answer the question using the accompanying figure. The constant region of a light chain is indicated by number____
a. 1
b. 2
c. 3
d. 4
e. 5
ANSWER: c
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Cells are treated with a drug that blocks purine synthesis. Which bases would not be made in those treated cells?
A. cytosine, thymine, and uracil B. adenine and guanine C. adenine and thymine D. cytosine and guanine
Turbellarians detect small prey items using chemoreceptors
Indicate whether the statement is true or false
Which of the following is a natural process of plants that can be used by humans to remove toxins from soils? Check all that apply.
A. physiological breakdown of the chemical into harmless products B. transport of toxins absorbed by the roots into the shoots, where they can be collected more easily C. root pressure pushing toxins from deep in the soil towards the surface D. secretion of a substance from the roots that breaks down the toxic chemical E. "storage" of a toxic chemical in plant tissues, which are then removed from the site
In the Hardy-Weinberg equation , the genotype frequency of heterozygotes is represented by
A. p2 + 2pq B. q2 C. 2pq D. p2 +q2 E. p2