Suppose that purple is dominant in pea plants. What will be the result of a cross between P generation purple and white plants?
a. all white flowers in the F1 generation
b. all purple flowers in the F1 generation
c. all purple flowers in the F1 generation, but a lighter purple than in the parents
d. mostly purple flowers in the F1 generation, with an occasional white flower
Answer: b. all purple flowers in the F1 generation
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All of the following statements about cellular trafficking are true except
A) COPII-coated vesicles move materials from ER to Golgi. B) COPI-coated vesicles move materials from Golgi to the secretory vesicle. C) movement may be mediated by microtubules. D) v-SNAREs occur in vesicles; t-SNAREs occur on target sites. E) tethering proteins mediate docking between target and vesicle.
Experiments have shown that increased nitrogen may affect the community composition of ____ fungi
a. mycorrhizal fungi alone b. club fungi alone c. saprobic fungi alone d. both mycorrhizal and club e. both mycorrhizal and saprobic
Which of the following is mismatched?
a. flagellated protozoans: trypanosomes b. alveolates: ciliates c. gren algae: diatoms d. stramenopiles: brown algae e. amoebozoa: slime molds
For roundworms living in the intestine of a
vertebrate, the cuticle most probably serves in what capacity? a. water retention b. nutrient absorption c. protection from digestive enzymes d. excretion of metabolic wastes e. sensory detection