Which class of antibodies plays a role in activating the complement and clumping cells?
A. IgG
B. IgA
C. IgE
D. IgD
E. IgM
Answer: E
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The breaking of a large organic molecule into smaller, individual subunits involves multiple ________.
A. osmotic reactions B. dehydration synthesis reactions C. hydrosynthetic reactions D. hydrolysis reactions
Barnacles and mussels compete with each other for space on the rocky intertidal. What type of interaction exists between these two species? If you knew that mussels are capable of occupying all available space in the rocky intertidal then what would happen to the barnacles? What keeps mussels from crowding out barnacles throughout the entire intertidal zone?
What will be an ideal response?
An animal that can maintain a constant internal body temperature regardless of environmental changes is called
a. homotherm b. cold-blooded c. an endotherm d. an ectotherm
Which is the only group of eukaryotes that has two types of nuclei in each cell: one or more small micronuclei, and a single larger macronucleus?
1.Sporozoans 2.Dinoflagellates 3.Euglenoids 4.Ciliates