The smooth endoplasmic reticulum stores and releases calcium ions in which organ?
a. the liver
b. the pancreas
c. the spleen
d. the kidneys
e. skeletal muscle
E
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Ascospores are produced in all of the following taxa EXCEPT
A) Aspergillus. B) Candida. C) Rhizopus. D) Saccharomyces.
Denaturation of protein X yields two subunits, A (MW 8,000) and B (MW 20,000). In order to understand the quaternary structure, a crosslinking experiment was performed with cell extracts
Analysis of the crosslinking products by SDS-PAGE showed four bands of the following molecular weights: 7,800, 19,500, 39,000, and 48,000 . This data suggests that protein X functions in vivo as: A. a dimer. B. a trimer. C. a tetramer. D The results are inconclusive.
Bone growth and remodeling stop when one reaches an adult size after puberty.
a. true b. false
The valence of an atom represents its
A. ability to interact with other atoms. B. electronegativity. C. atomic mass. D. ability to attract electrons. E. isotopic state.