The figure below shows a cell in the mitotic stage of ________.
a. anaphase.
b. prophase.
c. interphase.
d. telophase.
e. metaphase.
Ans: prophase
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A taxon that diverges earlier than the other taxa being considered in cladistic analysis is:
a. a homologous taxon. b. an outgroup. c. a derived taxon. d. an Amphioxus. e. a clade
The gastrointestinal tract has both a long tube that nutrients traverse from mouth to anus and accessory organs that aid in food digestion. From the following list of organs in the digestive system, identify the mismatch.
A. Salivary glands; accessory organ B. Pharynx; part of the digestive tube C. Rectum; part of the digestive tube D. Liver; part of the digestive tube E. Appendix; accessory organ
The synthesis of sugar molecules through the process of photosynthesis requires energy absorbed from sunlight. Bearing this in mind, what kind of reaction is photosynthesis?
A. catabolic B. exergonic C. feedback D. endergonic
A mitochondrion may maintain at least ten copies of mtDNA
a. because mtDNA replication is unregulated. b. to minimize the chance that, following its division, a daughter mitochondrion will not receive any mtDNA. c. because mtDNA is highly unstable. d. because mtDNA gene products are needed in high quantities. e. so that recombination among them can be used to maintain unmutated mtDNAs.