What is found in the central cavity of an adult long bone?
a. red marrow
b. yellow marrow
c. calcium deposits
d. collagen
e. spongy bone tissue
b
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Which of the following is the name of the heavy chain constant domain of an antibody?
A) beta B) delta C) zeta D) rho
Which of the following statements is correct?
A. All fungi, whether parasite or saprobe, are heterotrophs. B. All saprobes are heterotrophic, but only some are parasitic. C. All heterotrophs are parasites, but only some are saprobes. D. All heterotrophs are fungi, and include both parasites and saprobes.
What might a sea turtle or seabird mistake a plastic bag for which makes plastic bags extremely dangerous?
a. Fish b. Jellyfish c. Seal d. Kelp
What process does NOT produce variation?
a. crossing over b. random alignment of chromosomes during meiosis c. mitosis d. genetic recombination of alleles e. sexual reproduction