In lakes and ponds, the open-water zone extending to the depth of light penetration is referred to as the ________ zone
Fill in the blank(s) with correct word
limnetic
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Infection with HIV (human immunodeficiency virus) typically _____
A) increases the level of helper T cells for the first year after infection B) eliminates all T cells immediately C) leads to an immediate decrease in the number of HIV in the blood D) alters mitochondrial but not genomic DNA sequences E) is found in B cells but not in T cells
Explain why the proteome is NOT defined as "all the proteins encoded by an organism's genome."
What will be an ideal response?
A characteristic of all cancers is that ____
a. the cells divide continuously b. they have a benign form and a deadly form c. several mutations in several different genes are required in order for cancer to develop d. they are always due to a chromosome disjunction mutation e. the rapid proliferation of cells is required
The plastids that give flowers and fruits their distinctive colors are
A) chloroplasts. B) elaioplasts. C) amyloplasts. D) chromoplasts. E) proteinoplasts.