Which parts of the bone are expected to be extremely active in a growing child?
a. fibroblasts
b. osteoblasts
c. osteoclasts
d. chondrocytes
Ans: b. osteoblasts
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Which cytoskeletal structures represent a highly diverse group of tension-bearing fibers important to the maintenance of cell shape?
A. microtubules B. intermediate filaments C. microfilaments D. centrioles E. pili
What is the genetic code?
a. all of our genes collectively b. all of our base-pairs collectively c. the genetic “words” that code for amino acids d. the genes on DNA that code for proteins e. more than one of these describes the genetic code
Select the correct sequence concerning glucose catabolism.
A. glycolysis - acetyl - CoA - pyruvate - Krebs cycle - electron transport chain B. glycolysis - pyruvate - acetyl - CoA - Krebs cycle - electron transport chain C. glycolysis - pyruvate - acetyl - CoA - electron transport chain - Krebs cycle D. glycolysis - acetyl - CoA - pyruvate - electron transport chain - Krebs cycle
______ are molecules that stimulate a response by T and B cells.
A) Antibodies B) Antigens C) Interferons D) Platelets