Which of the following is NOT needed for transcription? 

A. enzymes
B. DNA
C. RNA nucleotides
D. ribosomes


D. ribosomes

Biology & Microbiology

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What is common to all of the oxidation reactions in the Krebs cycle?  

A.  They all lead to the generation of NADH. B.  They are all decarboxylation reactions. C.  They are all characterized by a loss of electrons from an organic molecule coupled to the reduction of an electron acceptor. D.  They all lead to substrate-level phosphorylation of ADP to generate ATP.

Biology & Microbiology

This type of lipid is found in pigments such as chlorophyll, in the visual pigment retinal, and in rubber:

A. steroid. B. wax. C. prostaglandin. D. terpene. E. phospholipid.

Biology & Microbiology

Which element(s) is common to all organic molecules?

A. oxygen B. nitrogen C. hydrogen D. carbon E. both nitrogen and carbon

Biology & Microbiology

A polypeptide in a wild type microbe contains the sequence Leu-Pro-Tyr-Ser-Pro. A phenotypic variant of the species has the peptide sequence Leu-Pro-Cys-Ser-Pro. This is an example of a(n) ________ mutation

A) nonsense B) missense C) silent D) frameshift E) inversion

Biology & Microbiology