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

Biology & Microbiology

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Ascospores are produced in all of the following taxa EXCEPT

A) Aspergillus. B) Candida. C) Rhizopus. D) Saccharomyces.

Biology & Microbiology

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.

Biology & Microbiology

Bone growth and remodeling stop when one reaches an adult size after puberty.

a. true b. false

Biology & Microbiology

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.

Biology & Microbiology