Which of the following is NOT usually considered a mutation?
a) DNA methylation taking place on a CpG site that formerly was un-methylated
b) Translocation whereby a region of chromosome 8 is swapped with chromosome 14
c) Shortening of a micro satellite repeat in the exon of a gene during mitosis
d) A change in the base sequences of DNA
Answer: a) DNA methylation taking place on a CpG site that formerly was un-methylated
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A. type I B. type II C. type III D. type IV E. type V
What are the functions of the TRAMP complex in yeast?
What will be an ideal response?
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A) cotransport proteins B) ion channels C) pores in the plasma membrane D) passive diffusion across the plasma membrane E) cellular metabolic reactions that create or destroy ions
The lipid layer that forms the foundation of cell membranes is primarily composed of molecules called __________.
A. phospholipids B. fats C. proteins D. carbohydrates