________ breaks frozen specimens along lines of greatest weakness, often down the middle of lipid bilayer membranes so that they may be observed by transmission electron microscopy.
Fill in the blank(s) with the appropriate word(s).
Freeze-etching
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An autosomal recessive disorder strikes 1 in 1,800 newborns in a population. The frequency of carriers of this disorder is approximately
A) 0.00055. B) 0.023. C) 0.045. D) 0.5.
The ____ is a system of vesicles that wraps around each A band and I band and stores ions that are
used in muscle contractions.
a. neuromuscular junction b. Golgi apparatus c. endolemma d. microvillus e. sarcoplasmic reticulum
_________ destroys all viable organisms including viruses.
A) Sterilization B) Antiseptic use C) Disinfection D) Sanitization
In precipitation tests, maximum precipitation takes place when
A. the amount of the antibody exceeds the amount of the antigen. B. the amount of the antigen exceeds the amount of the antibody. C. the amount of the antibody and the amount of the antigen are at optimal proportions. D. a toxin is present. E. a complex solution of many antibodies is used.