Chlorophyll a and chlorophyll b as well as the accessory pigments are arranged in an antenna array with a reaction center chlorophyll. These antenna arrays with the reaction center chlorophyll are known as
A. reaction center systems.
B. photosystems.
C. photomembrane systems.
D. Calvin systems.
Answer: B
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The leaf-cutter ants of Central America use leaves as food to cultivate the basidiomycete Lepiota in special underground chambers. To use leaves as an energy source, Lepiota must do which of the following?
A. secrete enzymes to digest cellulose B. ingest and break down the leaves C. secrete enzymes to digest chitin D. produce antibiotics to kill the ascomycete E. produce antibiotics to kill Streptomyces
The structure labeled 3 in Figure 51-2 is the:
a. archenteron.
b. endoderm.
c. mesoderm.
d. blastocoel.
e. ectoderm..
During DNA replication?
a. only one strand of the parent DNA is copied. b. neither strand of parent DNA appears in daughter DNA. c. DNA replication is considered conservative. d. the strands of parent DNA are unwound. e. complementary nucleotides are positioned by the enzyme helicase.
In what process does the aerobic electron transport chain participate?
a) Glycolysis b) Oxidative phosphorylation c) Photophosphorylation d) Substrate-level phosphorylation