Which of the following is an action of ricin?
a. binding to carbohydrates on the plasma
membrane
b. removal of an adenine base from rRNA
c. ribosome inactivation
d. none of these are actions of ricin
e. all of these (except d) are actions of ricin
E
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Some types of dinoflagellates (single-cell eukaryotes) are photosynthetic. They have flagella and can swim through the water. If you grow them in a container that is lit from the right side, the cells will swim to the right side of the container
This result suggests that ___________. A. dinoflagellates sense light B. dinoflagellates sense the Earth's magnetic field C. dinoflagellates sense a heterotrophic food source D. dinoflagellates swim in random directions E. dinoflagellates swim in response to temperature gradients
Human reproductive cloning produces a newborn human that is genetically identical to another adult
human. _________________ Indicate whether the statement is true or false.
________________ occurs when not all of the person's cells have the same genetic makeup
Apoptosis Mosaicism Cytokinesis Cancer
Which of the following preservation tactics would have the greatest impact on saving the largest number of species?
A. preserve a large tract of land that contains source populations of flagship species B. preserve multiple small tracts of land that each contain source populations of keystone species C. preserve several small tracts of land that contain source populations of keystone species D. preserve a large tract of land that contains source populations of keystone species E. preserve a large tract of land that contains sink populations of keystone species