Eyes with single lenses that respond to light and darkness are found in many arthropods; these are the
A. compound eyes.
B. ocelli.
C. apposition eyes.
D. ommatidia.
E. superposition segments.
B. ocelli.
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What does it mean when we say a gene is "turned off"?
A. The gene cannot be transcribed and translated into a protein. B. The gene is no longer working properly. C. The gene is now activated. D. The gene has a mutation.
The impact of a keystone species is proportionate to their abundance in an ecosystem. Indicate whether the statement is true or false
At these checkpoints a cyclin works with a cyclin-dependent kinase (i.e cdk) to regulate the checkpoint.
a. true b. false
Certain cancer cells have ABC transport molecules at the cell surface. These transporters use energy from ATP to move chemotherapeutic agents out of the cell. Which of the following do you think these transporters are most closely related to?
a. conjugation pilus b. membrane pumps c. altered porins d. beta-lactamase