Sponges can have skeletons made of all these materials except:

a. silica.
b. calcium carbonate.
c. starch.
d. spongin.
e. protein.


C

Biology & Microbiology

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At the molecular level, type A and type B blood differ in which of the following characteristics?

A. The antigens present on the surface of the red blood cells B. The type of sugar found in each type C. The antibodies that are generated against the other type of blood D. All of the answers are correct

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A waxy cuticle is secreted by _____

a. ground tissue c. a stoma b. epidermal cells d. root hairs

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Which one of the following wraps around, supports, and holds organs in proper position within the body?

A) loose areolar tissue B) tendons C) ligaments D) cytoskeleton E) reticular tissue

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Transmission of Plasmodium spp. (malaria) through a mosquito bite is an example of vehicle transmission.

a. true b. false

Biology & Microbiology