All land plants carry the LFY gene, which carries out similar functions in all plants
a. True
b. False
ANSWER: False
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One effect of auxin, which triggers the elongation of cells, is to affect cell walls by increasing their
A. permeability. B. plasticity. C. stiffness. D. thickness. E. water solubility.
________ first noted an acidic substance in the nuclei of cells from pus.
A) Mendel B) Watson C) Miescher D) McCarty
At what point is the fetal heartbeat first detectable with a heart monitor?
a. during the first month of pregnancy b. during the second moth of pregnancy c. at the beginning of the third month of pregnancy d. at the end of the first trimester e. in the middle of the second trimester
What is the role of the villi in the small intestine?
A) To absorb small nutrient molecules from the digestive tract B) To move food along the digestive tract C) To secrete digestive enzymes into the digestive tract D) To secrete water into the digestive tract