Bryophytes have all of the following characteristics except
A) multicellularity.
B) specialized cells and tissues.
C) lignified vascular tissue.
D) walled spores in sporangia.
E) a reduced, dependent sporophyte.
Ans: C) lignified vascular tissue.
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Under what condition is the AraC protein an activator?
A) The AraC protein is an activator when it is bound to glucose. B) The AraC protein is an activator when it is bound to lactose. C) The AraC protein is an activator when it is bound to arabinose. D) The AraC protein is an activator when it is bound to cyclic AMP. E) The AraC protein is an activator when it is bound to any sugar molecule.
Various forms of a gene at a given locus are called
a. chiasmata. b. alleles. c. autosomes. d. loci. e. chromatids.
What does this figure suggest is responsible for increasing species diversity?
A) time alone B) increasing leaf litter C) decreasing leaf litter D) increase in agriculture
Proteins destined to be secreted by the cell are produced:
A) by the Golgi complex. B) on the rough endoplasmic reticulum. C) in the cytosol. D) by free ribosomes. E) by the smooth endoplasmic reticulum.