In the spongy bone, which of the following produces blood cells?
A) yellow marrow
B) osteons
C) osteocytes
D) red marrow
D
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Which of the following happens in the first stage of interphase?
a. The cell replenishes its energy stores and synthesizes the proteins necessary for chromosome manipulation. b. The DNA replicates to form two chromosomes. c. Two centrosomes give rise to the mitotic spindle. d. The cell accumulates the building blocks of chromosomal DNA and associated proteins.
A(n) _____ disease has only recently been detected in humans, or has recently expanded its range
a. emerging b. epidemic c. pandemic d. sporadic e. plague
Which tubular organ takes up body fluid at one end and expels excess water and unwanted solutes at the other end?
a. nephron b. Malpighian tubes c. coelomic tubule d. kidney e. nephridium
The purines (larger nitrogen bases) are
A) A and G B) T and C C) A and C D) T and G