For all three types of bryophytes, the spores exhibit what chromosomal condition?
a. diploid
b. tetraploid
c. haploid
d. The spores do not have chromosomes.
c. haploid
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Natural killer cells specifically kill which of the following?
A. Foreign transplanted tissue B. Tumor cells and cells infected by microorganisms C. Gram-positive bacteria D. Fungi and protozoa
Which of the following affect(s) predator–prey
interactions? a. prey reproductive rate b. presence of an alternative predator or prey species c. predator response to prey density d. predator reproductive rate e. all of these
f you consider the combined processes of photosynthesis and cellular respiration, the electrons found in H2O at the beginning of the light reactions end up attaching to ________ during respiration.
-O2 to make new H2O -NADPH to make new glucose -pyruvate to make ethanol -electron transport carriers to make O2 -none of the above
Which of the following observations provides the best experimental evidence that populations diverge during allopatry?
a) Hybrid offspring of cold-adapted and saline-adapted genotypes were more viable than purebred offspring. b) Hybrids of offspring cold-adapted and saline-adapted genotypes were less viable than purebred offspring. c) Exposure to cold enabled populations to evolve better performance at low temperatures. d) Exposure to salt enabled populations to evolve better performance at high salinity.