The external skeleton of many invertebrates is made of:
A. cellulose
B. starch
C. glycogen
D. chitin
E. sucrose
Answer: D
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Bilateral symmetry is characteristic of a(n)
a. cnidarian b. roundworm c. echinoderm d. corals e. flatworm
The active site of an enzyme ____
a. is where the coenzyme is located b. is a specific bulge or protuberance on an enzyme c. is a groove or crevice in the structure of the enzyme complementary to the substrate d. will react with only one substrate no matter how many molecules may resemble the shape of the substrate e. rigidly resists any alteration of its shape
Assuming that all of the flagella found among the various types of protists require the same amount of ATP per unit time to operate, and assuming that all of an individual protist's flagella are in use simultaneously, then which of these protists should use the greatest amount of ATP per unit time to move about?
a. Chlamydomonas b. dinoflagellates c. euglenids d. diplomonads e. golden algae
In neutral atoms
a. protons and neutrons b. neutrons and electrons c. protons and electrons