The formation of amino acids under abiotic conditions was important because they serve as ____.
A. a supply of structural units for proteins
B. enzymes to catalyze reactions
C. subunits in the formation of DNA
D. subunits in the formation of RNA
E. subunits for the formation of lipids
Answer: A
You might also like to view...
GTP binding occurs on which subunit of a G protein?
A. the alpha subunit B. the beta subunit C. the gamma subunit D. GTP binds both beta and gamma.
Which of the following increases oxygen unloading from hemoglobin?
A) increased oxygen levels in the tissue B) increased blood pH C) decreased metabolism D) decreased temperature E) increased carbon dioxide in the tissue
What is common to all of the oxidation reactions in the Citric acid cycle?
A. They are all decarboxylation reactions. B. They all lead to substrate-level phosphorylation of ADP to generate ATP. C. They all lead to the generation of NADH. D. They are all characterized by a loss of electrons from an organic molecule coupled to the reduction of an electron acceptor.
Typhoid fever differs from salmonellosis in that in typhoid fever
A) the microorganisms multiply within macrophages. B) the incubation period is much longer. C) the symptoms are due to infection of the gallbladder. D) infection is spread only in the feces of domesticated animals. E) infection occurs due to ingestion of endospores.