Organisms that have their optimum growth pH between 5.5 and 8.0 are called ________.
Fill in the blank(s) with the appropriate word(s).
neutrophiles
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What is the function of a protein kinase?
A. To remove phosphate groups from proteins B. To cleave membrane phospholipids C. To phosphorylate GDP to generate GTP D. To add phosphate groups onto proteins
The flagella of bacteria rotate at their bases like propellers
Indicate whether the statement is true or false.
Human insulin, which does not provoke allergic reac-tions, has been produced by transgenic E. coli since ____
a. 1952 b. 1962 c. 1972 d. 1982 e. 1992
The antibiotic tetracycline binds to the 30S subunit of the ribosome as shown in Figure 20.1. The effect is to
a. Prevent attachment of tRNA. b. Prevent peptide bond formation. c. Prevent transcription. d. Stop the ribosome from moving along the mRNA. e. Prevent attachment of tRNA and mRNA.