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.
B) COPI-coated vesicles move materials from Golgi to the secretory vesicle.
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Photoperiodism is the ____
a. duration of flowering in a plant b. amount of light needed by a plant to exhibit normal growth c. biological response of a plant to a change in the length of daylight relative to darkness d. light phase of photosynthesize during which photolysis of water occurs e. time of the day when light shines with the most intensity
The column of water extending in tubes from plant roots to leaves is maintained by ____
a. hydrophilic interactions b. ionic bonds c. covalent bonds d. hydrophobic interactions e. cohesion between water molecules
Carbohydrates that add to our caloric intake but meet no other nutritional needs are
a. refined sugars. b. starches. c. celluloses. d. sugar alcohols. e. artificial sweeteners
Describe the physical processes that result in the summer and winter stratification in temperate zone lakes. What
causes the mixing in the spring and fall? What are major consequences of the winter stratification on the biota of the lake? What will be an ideal response?