Water potential is generally most negative in which of the following parts of a plant?
A) mesophyll cells of the leaf
B) xylem vessels in leaves
C) xylem vessels in roots
D) cells of the root cortex
A
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Which of the following statements is true regarding archaeons?
A. Like bacteria, they are killed by peptidoglycan-targeting antibiotics. B. They have cell walls composed of chitin. C. They do not include organisms that can undergo methanogenesis. D. Unlike bacteria, their cell size and cell shape is not determined by diffusion. E. Their transcriptional machinery is similar to the machinery used by eukaryotes.
Humans are an example of ____
a. bulk feeders b. deposit feeders c. fluid feeders d. suspension feeders e. bulk and fluid feeders
Brown algae lack true roots but have similar structures called ____ that anchor them to their substrate
a. stipes b. blades c. holdfasts d. thalli e. rhizoids
After proton pumps in mitochondria have depleted electrons of their energy during ATP production,
a. the electrons carried as part of hydrogen atoms are used in the formation of water b. the electrons carried as part of hydrogen atoms are used in the formation of ethyl alcohol c. the electrons build up inside the mitochondria and diffuse back to a thylakoid d. none of the above