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

Biology & Microbiology

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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

Biology & Microbiology

The five stages of a lytic infection are attachment, penetration, __________, assembly, and release

a. lysis b. prophage c. lysogenesis d. transduction e. replication

Biology & Microbiology

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.

Biology & Microbiology

Microorganisms placed in high concentrations of salts and sugars undergo lysis

Indicate whether the statement is true or false

Biology & Microbiology