The TATA box is a key element of the ____ of most eukaryotic protein-coding genes
a. terminator
b. coding region
c. promoter
d. transcription start point
e. introns
C
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What is the consequence to a bacterial cell of a mutation that inactivates the enzyme responsible for methylating the A in the DNA sequence 5? GATC?
A) Replication of the lagging strand cannot be completed. B) Thymine dimers cannot be repaired. C) Parental and new DNA strands cannot be distinguished during mismatch repair. D) Expression of certain metabolic genes is decreased. E) The mutation rate of all genes will be lower.
The order of amino acids is the ____ structure of proteins
a. primary b. secondary c. tertiary d. quaternary e. stereo
Corn, rice, wheat, fleshy fruits such as apples and berries, and many spices are all produced by
A) gymnosperms. B) ferns. C) angiosperms. D) seedless plants.
Which of the following is an incorrect pairing?
A. magnification; refraction of radiation B. contrast; staining techniques C. numerical aperture; curved glass D. dark field: high contrast E. electron beams; shorter wavelength