In cellular respiration, oxygen:
A. gains electrons and is an oxidizing agent.
B. loses electrons and is a reducing agent.
C. gains electrons and is a reducing agent.
D. loses electrons and is an oxidizing agent.
E. None of the answer options is correct.
A
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Which of the following organism is not a consumer?
A. A human B. A lion C. A mushroom D. A oak tree
What type of mutation occurs due to exposure to damaging environmental agents?
a. transition substitutions b. spontaneous mutations c. induced mutations d. transverse substitutions
Polychaetas and oligochaetes are named for the bristles that are called
A. ganglia. B. cnidocyst. C. chaetae. D. radula. E. flagella.
In a population of plants with a diploid number of 12, a new individual appeared with a chromosome number of 24. If this organism could self-fertilize, forming offspring with the same number of chromosomes (24), scientists would consider this an example
of A) sympatric speciation. B) behavioral isolation. C) formation of a hybrid zone. D) reduced hybrid fertility.