Which of the following is a Wnt pathway membrane protein?
A. Wnt
B. Dsh
C. frizzled
D. Hedgehog
C
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Which of the following is (are) a sterilizing gas(es) that can be used on heat-sensitive materials?
A. Glutaraldehyde B. Ethylene oxide C. Chlorine gas D. Isopropanol
Wheat is a group of grass species. Cultivation originated in the eastern Mediterranean about 10,000 years ago. In comparison to closely related wild grasses, cultivated wheat has shorter stalks and fewer, larger seeds that are firmly attached to the stalk
(e.g., they don't blow away in the wind). How do these changes affect the evolutionary fitness of wheat? A. Fitness is increased because the dispersal of embryos is reduced. B. Fitness is increased because the dispersal is limited. C. Fitness is decreased because more energy is devoted to trying to grow longer stalks. D. Fitness is decreased because the seeds are not dispersed.
The first sexual reproducers were _____
a. archaeans b. aerobic bacteria c. cyanobacteria d. eukaryotes
Discuss what might be three different beneficial consequences and three different detrimental consequences of killing all microorganisms on the Earth.
What will be an ideal response?