In plant roots, the Casparian strip _____
A) aids in the uptake of nutrients
B) provides energy for the active transport of minerals into the stele from the cortex
C) ensures that all minerals are absorbed from the soil in equal amounts
D) ensures that all water and dissolved substances must pass through a cell membrane before entering the stele
D
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4. Structures that are shed in one piece include
(a) the cuticle of roundworms. (b) the exoskeleton of arthropods. (c) human hair. (d) all of the above.
If your mass is 70 kg on Earth, how much is your mass on the Moon?
a. less than 70 kg. b. more than 70 kg. c. 70 kg. d. none of the above.
Which classification level would be the most specific?
a. genus b. family c. phylum d. order e. class
Which of the following is classified as a spongiform encephalopathy?
A) botulism B) variant Creutzfeldt-Jakob disease C) Hansen's disease D) arboviral encephalitis E) African sleeping sickness