Which of the following techniques separates proteins based only on their size?
A) SDS-PAGE (SDS–polyacrylamide gel electrophoresis)
B) mass spectrometry
C) ion-exchange chromatography
D) two-dimensional gel electrophoresis
E) SDS-PAGE and mass spectrometry
Answer: A
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Which of the following contributes to subfertility?
A) Regular menstrual cycles B) High sperm counts C) Being under 30 years of age D) Oligospermia
A mutant allele results in a truncated form of a signaling protein. This protein can still bind its receptor protein but does not activate the receptor and inhibits wild-type signaling proteins from binding the receptor. What type of allele is this mutant allele?
A) hypomorphic allele B) hypermorphic allele C) neomorphic allele D) antimorphic allele
During embryonic development, which of the following is not a quality of inducer molecules?
A: They are generally produced by the same cells they affect. B: They bind to receptors on the plasma membrane of target cells. C: They act through signal transduction pathways. D: They may be proteins. E: Inducer molecules have all of the above qualities.
Personal genomics has led to the discovery of many new genes associated with disease states. Studies on autism spectrum disorder have revealed how many genes to have an impact on the disease state?
A) 1 B) 5 C) >100 D) 63