What is a key morphological difference between fish and amphibians?
A. Fish have gills to extract oxygen from water.
B. Amphibians have strong muscular and skeletal systems to support their body on land.
C. Amphibians have amniotic eggs.
D. Fish have a lateral line system.
Answer: B
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A virus achieves host specificity through ____________ on the surface of the capsid or envelope, which bind to the host cell
A. lipids B. proteins C. sugars D. nucleic acids E. All of the answer choices are correct.
Are any of the offspring or parents affected?
a. Yes b. No
For a lady bug population at the end of summer, the food supply decreases to where only 2,000 lady bugs can be supported per acre. If there are 1,000 lady bugs in a one-acre field, the per capita rate of increase is 25%, and no immigration or emigration occur, how many individuals will be added in the next generation? Interpret whether G = rN(K – N)/K or G = rN is appropriate.
A. 1,000 B. 250 C. 1,250 D. 125 E. 0
A light microscope can clearly resolve two
structures in a cell if they are no closer together than __________ percent of the shortest wavelength of visible light. a. 90 b. 80 c. 75 d. 60 e. 50