Innate immunity defenses include
a. phagocytosis.
b. complement system.
c. inflammation.
d. fever.
e. all of these
E
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Tissues that are metabolically active and utilize large amounts of energy would be rich in
A. ribosomes. B. lysosomes. C. smooth endoplasmic reticulum. D. mitochondria. E. contractile vacuoles.
In the experiment studying bioluminescence and the predation of copepods by fish, a control group of jars with bioluminescent dinoflagellates experienced a higher predation rate of copepods by stickleback fish than in the jars with nonbioluminescent dinoflagellates. This provided significant evidence that
A. All of the answer choices are correct. B. natural selection has favored the survival of dinoflagellates that can emit light in flashes when disturbed. C. copepods that would eat dinoflagellates benefit from fleeing when the protists bioluminesce. D. dinoflagellates can avoid being eaten by increasing the flashing, and attracting predators to eat the copepods near them. E. natural selection has favored the survival of copepods that move rapidly away from flashing bioluminescent dinoflagellates.
For a P1 transduction experiment, an E. coli donor strain with the genotype arg+, ser+, ampR and a recipient strain with the genotype arg-, ser-, ampS were used
The following results were obtained for each marker: Of the transductants selected for arginine, 5% are ser+ and 30% are ampR. Of the transductants selected for serine, 3% are arg+ and 0% are ampR. What is the correct order and relative distance of these three genes on the E. coli chromosome?
Which phrase describes the events that occur in the production of a pollen grain from a microspore mother cell?
a. Only meiosis occurs. b. First mitosis occurs, and then meiosis, followed by mitosis. c. First meiosis occurs, and then mitosis. d. First mitosis occurs, and then meiosis.