Bacteria with DNA described as having "hairpin ends with inverted repeats" must not have circular chromosomes.
Answer the following statement true (T) or false (F)
True
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The mucociliary blanket is found in the digestive system of mammals.
Answer the following statement true (T) or false (F)
In a closed circulatory system, transfers between blood and the cells of other tissues take place across:
a. capillaries b. veins c. arteries d. lymph vessels e. all blood vessels
Polar bears are top predators, and tests on their tissues have shown a surprising ____
a. resistance to warming b. amount of protein c. resistance to disease d. amount of mercury and organic pesticides e. amount of nutrients
Colostrum is:
a. a protein fluid produced by the mammary gland. b. the fluid secreted by the vagina in response to sexual stimulation. c. the hormone that stimulates lactation. d. the hormone that stimulates ejection of milk into the breasts. e. a fluid secreted by the uterus during menstruati