Which statement is true about the effect of stress on a population?
a. Plants compete more in an ideal environment.
b. Plants compete more in a stressful environment.
c. Only abiotic factors influence populations.
d. Stressful environments brought about by man do not effect populations.
e. Stressful environments brought about by nature do not effect populations.
A
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The production of an rna molecule that is complementary to one particular DNA sequence is called:
A. transduction B. translation C. replication D. splicing E. transcription
Which of the following is the fourth basic step to genetically modify a cell?
A) transformation B) ligation C) plasmid cleavage D) isolation of gene E) restriction-enzyme digestion of gene
Quality control should be performed on which two organisms to determine the validity of the oxidase reagent?
a. S. aureus and S. epidermidis b. S. epidermidis and Enterococcus c. Aerococcus and Enterococcus d. Micrococcus and Aerococcus
Insects and birds excrete _____
a. ammonia c. uric acid b. urea d. nucleic acid