Enzymes are ____
a. RNA molecules
b. proteins
c. DNA molecules
d. transposable elements
e. codons
ANSWER: b
Biology & Microbiology
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Cytotoxic T cells
A. lack specificity for antigen. B. secrete granzymes and perforins that damage target cells. C. secrete interleukin-2 to stimulate B and T cells. D. are activated by free, soluble antigens.
Biology & Microbiology
The most abundant gas in the atmosphere is oxygen
____________________ Indicate whether the statement is true or false.
Biology & Microbiology
What 3-carbon molecules are produced when a 6-carbon glucose is broken down during glycolysis? (two words)
What will be an ideal response?
Biology & Microbiology
The oil from the sebaceous glands is produced by which of the following cell organelles?
A) ribosomes B) the rough endoplasmic reticulum C) the cell membrane D) the smooth endoplasmic reticulum
Biology & Microbiology