Amphistegina gibbosa is a species of protist with filose pseudopodia found near coral reefs. What cannot be true of A. gibbosa?
A. They are enclosed within a shell composed of calcium carbonate.
B. They have sacs under the cell membrane.
C. They can be useful in studying global warming.
D. They are heterotrophic.
E. They are closely related to radiolarians.
B. They have sacs under the cell membrane.
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a. epidermis b. dermis c. hypodermis d. more than one e. none of these
Successive cell divisions convert the zygote into a
multi-cell embryo during a. meiosis. b. parthenogenesis. c. embryonic induction. d. cleavage. e. invagination.
Which of the following is NOT a component of a tropical marine ecosystem?
A. All of the answers are components of a tropical marine ecosystem. B. sunlight C. algae D. corals E. fishes
Synaptic vesicles are
a. at the ends of dendrites and axons b. at the ends of axons only c. along the length of all long fibers d. at the ends of interneurons only e. both b and d are correct