Which type of bird is most likely to benefit from air sacs which reduce its weight?
A) birds, such as geese, which migrate great distances
B) birds that chip away wood, such as woodpeckers
C) diving birds
D) birds that rip apart prey, such as hawks and eagles
Answer: A
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Which of the following does NOT describe modern, living cells?
a. a semi-permeable membrane keeping the internal environment of the cell separate from the external environment b. nucleic acids linked in a sequence to form at least one large molecule c. a requirement for the nucleic acids to be contained behind a nuclear membrane d. multiple pathways for converting energy from one form into another e. a method of converting the nucleic acid sequences into proteins
Which enzyme(s) digest nucleic acids?
a. pepsins b. disaccharidases c. aminopeptidase d. pancreatic nucleases e. amylase
Bone remodeling is LEAST likely to be used in ____
a. replacing old bone b. healing of injured bone c. bone growth in childhood d. blood cell formation e. calcium homeostasis
Which form of symbiosis resembles the predator-prey relationship in which one species benefits while the other species is harmed?
A. Mimicry B. Parasitism C. Commensalism D. Mutualism