What is alternative RNA splicing?
a. a mechanism for cleaving RNA into progressively smaller pieces for disposal
b. a mechanism for patching together multiple RNA transcripts to form large and complex instructions for quaternary level proteins
c. a mechanism that allows different protein products to be produced from one gene when different exons are combined to form the mRNA
d. an out of control splicing mechanism only seen in cancerous cells
c. a mechanism that allows different protein products to be produced from one gene when different exons are combined to form the mRNA
You might also like to view...
Streptococcus pyogenes produces proteins called ________, which alter(s) the surface of the pathogen and inhibits phagocytosis
A) glycolipids B) leukocidins C) M proteins D) pus
Choose the statement that is TRUE.
a. Fat absorption from lumen to blood occurs completely by diffusion. b. Peristalsis of the stomach requires coordination of multiple motor neurons from the spinal cord. c. Histamine inhibits acid secretion by the stomach. d. Most digestive enzymes are produced by the pancreas.
A repair enzyme recognizes an incorrect structure in the DNA and directly converts it back to a correct structure. Which of the following DNA repair systems is responsible for the correction?
A. direct repair B. methyl-directed mismatch repair C. nucleotide excision repair D. base excision repair E. indirect repair
Neutral variation is supported by the observation that most changes in codons occur in the third position within the codon, which often has no effect on the sequence of amino acids in the protein.
Answer the following statement true (T) or false (F)