A plasmid used as a cloning vector in E. coli must have
A) an ori sequence.
B) a selectable marker.
C) unique restriction sites.
D) B and C
E) All of these
E
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The molecule that an enzyme acts upon is known as its
A) substrate. B) coenzyme. C) apoenzyme. D) product. E) catalyst.
Explain why Duchenne muscular dystrophy (DMD), a recessive condition, most commonly occurs in boys. What will be an ideal response?
Matching II. Choose the one most appropriate
answer for each. 1. ___ control over enzyme activity 2. ___ transcript processing 3. ___ post-translational control 4. ___ transcriptional control 5. ___ transport control A. influences the amount and kinds of mRNA assembled from structural genes B. snipping out of transcript regions; chemical modification of transcript before it arrives at ribosome control C. nuclear envelope selectively regulates passage of transcripts D. phosphorylation of translated protein E. for example, the interior environmental pH determines whether a protein can act as a cell catalyst
Oxygen and carbon dioxide are exchanged due to the process of
a. osmosis. b. facilitated diffusion. c. diffusion. d. Brownian movement. e. active transport.