Heterotrophic bacteria are able to break down large food items
a. by ingesting them with pseudopods.
b. with exoenzymes.
c. by breaking them up with cilia.
d. by crushing with their larger relative size.
e. by using their cell membranes to pinch the food into smaller pieces.
B
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Answer the following statements true (T) or false (F)
1.In bryophytes, the sporophyte is conspicuous or dominant. 2.A mushroom is a structure that is attached to a much larger growth form of the organism. 3.Molecular evidence places fungi closer to plants than to animals. 4.Molecular evidence places fungi closer to animals than to plants. 5.A yeast is a multicellular fungus.
Smooth muscle in the arteriole walls can vasoconstrict or vasodilate, which:a
helps to regulate blood pressure. b. helps to accelerate the flow of blood through the vessels. c. prevents the back flow of blood into the tissues. d. squeezes oxygen out of the blood. e. adds strength to the blood vessels.
Why do harmful agents cause the most severe birth defects during the embryonic period?
A) The mother's hormones are at the highest levels at this time. B) The embryo has not yet implanted into the uterus. C) This is the period when substances pass most easily through the placenta. D) This is a period of rapid differentiation when cells and tissues acquire specific functions and organs form.
Which of the following burn injuries or patterns should make you the MOST suspicious for abuse?
A) Burns to the forearm B) Splash burns to a leg C) An arc burn to the hand D) Burns with formed shapes