The studies of alkaptonuria provided the first evidence of a connection between genes and metabolism. Who conducted these studies?
a. Archibald Garrod
b. Watson and Crick
c. Frederick Griffith
d. Beadle and Tatum
Answer: a. Archibald Garrod
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During a blood transfusion, what can occur when the antigens on the blood cells of a blood donor interact with the antibodies that are present in the plasma of a recipient that has a different blood type?
A. an autoimmune reaction B. an infection C. an agglutination reaction D. an inflammatory reaction E. a temperature response
The five stages of a lytic infection are attachment, penetration, __________, assembly, and release
a. lysis b. prophage c. lysogenesis d. transduction e. replication
A phosphatase is capable of dephosphorylating molecules. What would this enzyme do in a signal transduction pathway that used a kinase cascade?
A. Serve as a ligand for the receptor. B. Activate the cascade. C. Turn off the cascade. D. Phosphorylate a receptor. E. Phosphorylate a transcription factor.
Microorganisms placed in high concentrations of salts and sugars undergo lysis
Indicate whether the statement is true or false