A change in nucleotide sequence that results in a change to a stop codon is known

A) nonsense mutation.
B) silent mutation.
C) missense mutation.
D) frameshift mutation.
E) transversion mutation.


A) nonsense mutation.

Biology & Microbiology

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Which is NOT a part of the vertebrate eye?  

A.  cornea B.  retina C.  iris D.  cochlea E.  pupil

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If no introns remain in the final transcript but all exons do, what will be the final length of this mRNA shown in the illustration?



a. 485bp
b. 200bp
c. 280bp
d. 20bp

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In simple diffusion,

a. the rate of movement of molecules is influenced by temperature and pressure. b. the movement of individual molecules is random. c. the movement of molecules of one substance is independent of the movement of any other substance. d. the net movement is away from the region of highest concentration. e. all of these happen.

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Which of the following is an intracellular parasite

that causes sexually transmitted disease? a. Chlamydia b. Cyanobacteria c. Clostridium d. Chondromyces e. all of these

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