Which of the following is considered an intrinsic factor for food spoilage?
A) degree of processing
B) acidity
C) storage temperature
D) water content
E) storage packaging
D
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Ruminants need special enzymes to digest
a. starch. b. proteins. c. cellulose. d. lignin. e. glycogen.
Which one of the following is formed by the removal of a carbon (as CO2 ) from a molecule of pyruvate?
A) glyceraldehyde 3-phosphate B) oxaloacetate C) acetyl CoA D) citrate
In a particular population, over the course of several dozen generations, an adenine was replaced by a guanine at a particular non-coding locus in the DNA base sequence. The evolutionary mechanism responsible for this change was:
a) migration. b) mutation. c) bottlenecks. d) directional selection. e) genetic drift.
The optimal diet contains
A. more carbohydrates than fats. B. sufficient calories to supply the body's energy needs. C. the right amount of essential nutrients. D. All of the choices are correct.