Which one of the following is the derivative of vitamin A that absorbs light energy?
A. chlorophyll
B. opsin
C. retinal
D. ommatida
C
Biology & Microbiology
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Prokaryotic cells divide by a process known as
A. conjugation. B. mitosis. C. binary fusion. D. binary fission.
Biology & Microbiology
Ecosystems obtain essential raw materials from
a. the components of water molecules. b. mineral ions dissolved in water. c. the weathering of rocks. d. the atmosphere. e. all of these.
Biology & Microbiology
After an endospore forms, the cell membrane of the original cell lyses, releasing the endospore
____________________ Indicate whether the statement is true or false.
Biology & Microbiology
What is the name of the enzyme that fits new complementary DNA nucleotides into the new strand?
A. DNA telomerase B. DNA replicase C. DNA polymerase D. DNA ligase E. DNA helicase
Biology & Microbiology