Which of the following are NOT protists?
a. bacteria
b. diatoms
c. slime molds
d. dinoflagellates
e. euglenoids
Answer: a
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Collectively, the majority of carbon stored in reservoirs is in the form of:
A. CO2. B. C6H12O6. C. H2CO3. D. CaCO3. E. CH4.
What happens when the concentrations of a solute that can freely diffuse across a membrane are equal inside and
outside the cell?
a. The osmotic pressure is equilibrated on both sides of the membrane. b. Solute molecules no longer diffuse across the membrane. c. Solute molecules continue to diffuse across the membrane. d. Transporter proteins are inhibited to prevent movement across the membrane. e. Channel proteins are gated to prevent movement across the membrane.
What is the process in which one activated receptor can give rise to thousands of
final products? a. signal transcription
b. signal transmission c. signal transduction d. signal termination e. signal amplification
Animals probably developed from
A. Bacteria. B. Flagellated Protista. C. Slimemolds. D. Fungi.