The best agricultural soil would be composed of a high proportion of

a. clay.
b. loam.
c. silt.
d. soil.
e. gravel.


B

Biology & Microbiology

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Experimental studies of calorie _________ have shown that typical ad libitum (free feeding) levels of consumption are unhealthy in many mammalian species

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

Scientists have developed transgenic crops that use genes from other organisms to produce substances that protect them from damage by insect pests or frost. Which type of biotechnology is involved in the production of such crops?

A) genomics B) genetic engineering C) pharmacogenomics D) gene mapping

Biology & Microbiology

Which of the following occur during initiation?

A. A tRNA containing the methionine codon and a ribosomal unit converge on an mRNA. B. A tRNA containing a UAA sequence hybridizes to a complementary mRNA sequence. C. Peptide bonds form between an amino acid and mRNA. D. Peptide bonds from between a tRNA an mRNA E. A tRNA containing a lysine codon attaches to an mRNA.

Biology & Microbiology

________ are complex communities of various types of microbes that adhere to surfaces

A) Aggregates B) Colonies C) Isolates D) Biofilms E) Media

Biology & Microbiology