After energy flows into a food web, it leaves mainly by
a. losses of metabolic heat.
b. evaporation.
c. conversion to chemical energy.
d. waste production.
e. convection.
A
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Which of the following processes occurs in the cytoplasm of a eukaryotic cell?
a. translation b. DNA replication and transcription c. transcription d. DNA replication e. translation and transcription
In mitosis,
a. the chromosome number is halved. b. the chromosome number is doubled. c. the chromosome number stays the same. d. the chromosome number may double or be halved depending on the species. e. gametes are formed in bacteria only
Muscle cells are not typical cells because
a. groups of them fuse in the embryo to form multinucleated fibers. b. they contain actin proteins. c. they contain myosin proteins. d. they respond to stimuli. e. all of these are true.
Refer to the accompanying figure. Which statement about the corpus luteum is FALSE?
a. It is responsible for the second peak in the line labeled as 1. b. It is responsible for the second peak in the line labeled as 2. c. It is responsible for the first peak in the line labeled as 1. d. It develops from the empty follicle following ovulation. e. It is most active between days 18 to 26.