Calcium is stored and released by the ____
a. T-tubules
b. sarcomere
c. troponin
d. tropomyosin
e. sarcoplasmic reticulum
ANSWER: e
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A homologous chromosome pair is best described as two chromosomes having ____
a. the same genes in the same order but possibly having different alleles of those genes b. the same alleles of the same genes in the same order c. the same alleles of the same genes in a different order d. different alleles of the same genes arranged in a different order e. identical DNA sequences
What of the following is not associated with an El Nino event? a. Decline in marine primary producers
b. Decrease in the nutrients along the eastern Pacific coasts. c. Warm currents replace cold currents. d. Decline in the anchovy population. e. Increase in sea lion populations.
Systemic lupus erythematosus is characterized by:
A.) absence of immune complexes. B.) increase in cells lining the synovial membrane. C.) presence of dsDNA antibodies. D.) HLA-DR antigens expressed on thyroid epithelial cells.
What are the three main components of a DNA nucleotide?
What will be an ideal response?