A person's diet must contain
A. the minimal nutrients necessary to manufacture and maintain the body's structure.
B. vitamins.
C. material to supply the energy (ATP).
D. All of these answers are true.
D. All of these answers are true.
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Which of the following plant nutrients is
mismatched with its function?
a. nitrogen--component of nucleic acids b. phosphorous--component of proteins c. sulfur--component of chlorophyll d. iron--enzyme cofactor e. all of these plant nutrients are matched correctly with their functions
Microparasites are usually characterized by
A) a large body size. B) a long generation time. C) a long time of infection relative to the host's expected life span. D) direct transmission from one host to another.
Some plasmid vectors have incorporated the regulatory sequences of the lactose operon so that the expression of the recombinant gene can be induced at the appropriate time.
Answer the following statement true (T) or false (F)
A certain unicellular eukaryote has a siliceous (glasslike) shell and autotrophic nutrition. To which group does it belong?
A) dinoflagellate B) diatom C) gymnamoeba D) foraminiferan E) cellular slime mold