Helper T cells secrete

A) cytokines.
B) antibodies.
C) antigens.
D) immunoglobulins.


A) cytokines.

Biology & Microbiology

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Insulin is produced and released from the pineal gland

Indicate whether the statement is true or false.

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Treating young plants with gibberellins is likely to cause them to ________

a. lose leaves b. close stomata c. slow their growth d. grow abnormally tall

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Plants require sulfur as a nutrient because some important cell components have sulfur in their composition. Which of these biomolecules contain sulfur?

a. cellulose b. ATP c. methionine d. fructose

Biology & Microbiology

Which of the following hormones stimulates the release of a future egg cell by the ovaries?

A) luteinizing B) follicle-stimulating C) oxytocin D) prolactin

Biology & Microbiology