A new antibiotic is developed that interferes with the way tRNA fits into bacterial ribosomes. How would this kill the bacteria?
A) The bacteria would be unable to produce necessary enzymes to carry out basic metabolism.
B) The tRNA would be unable to carry out transcription.
C) Ribosomes would not be able to produce mRNA, and cell functions would halt.
D) tRNA would not unwind the DNA to allow DNA polymerase to copy it; thus, cell division would stop.
A
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The origin of a skeletal muscle is
(a) attached to the less mobile portion of the skeleton. (b) attached to the portion of the skeleton that moves when the muscle contracts. (c) never attached to the skeleton. (d) its belly.
Initiation factors are ____ that assist in the initiation of transcription
a. mRNAs b. proteins c. tRNAs d. amino acids e. snRNPs
Centrioles are also called basal bodies
Indicate whether the statement is true or false
Which of the following is not true?
A) Throughout the year, Earth's axis maintains the same alignment relative to the plane of the ecliptic. B) During the winter months, Earth's axis is aligned towards Southern Cross. C) The axis through Earth's two poles points just slightly off Polaris. D) Earth's axis is titled 23.5° relative to the plane of the ecliptic.