In the wild-type purple monkeyflower (i.e., M. lewisii), the dominant YUP allele prevents carotenoids from forming, leaving the pinkish-purple anthocyanin pigments to provide the petal color. A wild-type scarlet monkeyflower (i.e., M. cardinalis) has which genotype?
What will be an ideal response?
yup/yup
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You discover a bacteria species in a deep ocean sample that can turn olive oil into pure gold. The bacteria do not replicate well at sea level, and one night all of your "Golden" bacteria die. What can you do to possibly retrieve the gold-making gene from the dead Golden bacteria?
A. Transform a live bacterial strain with the Golden bacteria's DNA. B. Transduce a live bacterial strain with the Golden bacteria's DNA. C. Conjugate a live bacterial strain with the Golden bacteria. D. Transduce the Golden bacteria and then infect a live strain of bacteria with the transducing virus. E. There is nothing you can do because the cells are dead. You will have to search the ocean and hope to find the elusive bacteria again.
You have been studying the relationship between jackals and tigers in India. Until recently, the only relationship you have observed is that jackals will associate themselves with a particular tiger and follow it at a safe distance in order to feed on the big cat's kills. However, recently you observed a jackal alerting a tiger to a kill with a loud cry. If you continue to observe this alerting behavior, you might change the categorization of the jackal/tiger relationship from ________ to ________.
A. mutualism; parasitism B. mutualism; commensalism C. parasitism; mutualism D. commensalism; mutualism E. competition; predation
Enzymes can catalyze a reaction only if
a. they encounter a molecule of ATP. b. their active site is sufficiently oxidized. c. they have both products in their active site at the same time. d. they encounter a substrate that fits their active site.
Steroid hormones ________
A) begin their action outside the membrane B) usually diffuse through the plasma membrane into target cells C) bind to receptors in the plasma membrane D) are water soluble