Which of the following correctly matches a nuclear structure with its function?
A. Chromatin - fluid portion of the nucleus
B. Chromosomes - contains RNA and histones
C. Nuclear pores - allow molecules to move between the nucleus and cytoplasm
D. Nucleolus - DNA synthesis
E. Nuclear envelope - contains the nucleolar organizer
Answer: C
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A long bone is covered externally with a sheath called the __________, whereas the marrow cavity is lined with the __________.
A. epiphysis; diaphysis B. diaphysis; epiphysis C. compact bone; spongy bone D. periosteum; endosteum E. endosteum; periosteum
Osteons run perpendicular to the diaphysis of a long bone
Indicate whether this statement is true or false.
The anterior connection between the two pubic bones is
A) diarthrotic. B) an example of a symphysis. C) a condylar joint. D) actually comprised of three separate joints. E) diarthrotic and an example of a symphysis.
In a case where one parent had an autosomal dominant disorder, and the other did not, what would be the probability that one of their children would have that disorder?
A. 25% B. 75% C. 100% D. 50% E. 0%