The primary advantage of gills versus the body surface for gas exchange in aquatic animals is that ________.
A. gills are located near the mouth
B. gills decrease resistance to movement
C. all gills contain a countercurrent exchange system
D. gills have a much greater diffusion surface area
Answer: D
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What happens during the electron transport chain of the light reactions?
A. The electrons get increasingly excited as they move up the chain. B. The electrons release their energy, which is captured by ATP and NADPH. C. The electrons interact with oxygen to move up the chain. D. The electrons get fused with each other to capture energy.
Which of the following endocrine organs and hormones are not paired correctly?
A. anterior pituitary gland: vasopressin B. posterior pituitary gland: oxytocin C. hypothalamus: releasing factors D. anterior pituitary gland: growth hormone E. posterior pituitary gland: antidiuretic hormone
Which of the following structures would be the best choice as a biological indicator to test autoclave operations?
A. Endopores formed by Geobacillus (Bacillus) stearothermophilus B. Cysts formed by Azotobacter species C. Microcysts withing the fruiting bodies of myxobacteria D. Dormant spores in the conidia of Streptomyces species
Lipids form ____________ ____________ bonds.
Fill in the blank(s) with the appropriate word(s).