What is the difference between an intervening sequence and an untranslated region in a eukaryotic mRNA?
What will be an ideal response?
Untranslated regions (UTRs) are found on either side of the protein-coding sequence of mRNAs and are part of the exons (and are thus not removed in pre-mRNA processing). Intervening sequences, also called introns, are found within the protein-coding sequence region and are removed in the processing of the pre-mRNA molecule to the mature mRNA.
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What substance is required for membrane trafficking to occur?
a. Lipids b. Oxygen c. Sodium d. Hydrogen e. ATP
DNA polymerase assembles new strands in a ____
a. 5' to 3' direction only b. 5' to 3' direction building one strand and a 3' to 5' direction building the other stand c. 5' to 3' direction building the first half of a strand and a 3' to 5' direction building the second half of a strand d. 3' to 5' direction building the first half of a strand and a 5' to 3' direction building the second half of a strand e. 3' to 5' direction on the "old" 3' to 5' strand
Glycolytic enzymes have been found to have roles in all of the following except
A) transcriptional repression. B) apoptosis inhibition. C) transcriptional activator. D) GTP hydrolysis. E) stimulation of cell migration.
The emergency contraceptive pill (ECP) works by
A. killing the embryo. B. changing the pH of the uterus. C. killing sperm. D. preventing ovulation.