A spontaneous process always happens very quickly.

Indicate whether the statement is true or false.


Ans: False
Thermodynamics does not specify the rate of a reaction

Biology & Microbiology

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You expect that a mutation in E. coli that was recently isolated results in loss of enzyme R activity. In looking for the gene, you find comparable sequences. Using an in vitro transcription translation system, you use the gene obtained from the mutant, as well as a wild type E. coli as a control. Following protein isolation and gel electrophoresis, you observe that the wild type E. coli produces

a protein that is 35K in size, corresponding to enzyme R. However, the mutant strain produces a protein that is 25K in size. What does this information suggest? A) A nonsense mutation has occurred, resulting in a truncated, nonfunctional product in the mutant. B) A large addition has occurred in the wild type strain, such that approximately 35 tandem repeats of this gene are present and are biologically active. C) A missense mutation has occurred, resulting in a truncated, nonfunctional product in the mutant. D) all of the above E) Not enough information is given.

Biology & Microbiology

Tarsiers are in the suborder:a

Tarsiformes b. Anthropoidea c. Prosimii d. Hominoidea e. Pithecinae

Biology & Microbiology

Which of the following has the longest fossil record?

A. Homo neanderthalensis B. Homo erectus C. Homo sapiens D. Homo habilis E. Homo heidelbergensis

Biology & Microbiology

All infections result in disease

Indicate whether the statement is true or false

Biology & Microbiology