Canning works to preserve foods through
A) creation of an anaerobic environment.
B) creation of an anaerobic environment and exposure to high heat.
C) exposure to high heat.
D) mutation of bacterial DNA.
E) increasing pH.
B
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Indicate whether the statement is true or false
Protobionts are vesicle-like assemblages of abiotically-produced organic polymers
_______ Indicate whether the statement is true or false.
In polymerase chain reaction technology, the two strands of DNA are separated by:
a. gel electrophoresis. b. treatment with restriction enzymes. c. centrifugation. d. exposure to high pH. e. exposure to heat.
A special type of membrane transport process in which water moves across a selectively permeable membrane is called ____________ .
Fill in the blank(s) with the appropriate word(s).