Biochemistry- Nucleic Acids Flashcards Preview

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Flashcards in Biochemistry- Nucleic Acids Deck (16)
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1

What are the 2 pyrimidines found in DNA?

cytosine and thymine

2

What are the 2 pyrimidines found in RNA?

uracil and cytosine

3

What are the 2 purines found in RNA and DNA?

adenine and guanine

4

Uric acid is the breakdown product of what substance?

Purine catabolism

5

in DNA what are the 2 base pair combinations?

A-T, C-G

6

Making RNA from DNA template is known as what?

transcription

7

What are the 3 characteristic components of a nucleotide?

nitrogenous base, pentose sugar, phosphate group

8

In de novo synthesis of purines, what is the starting material?

Ribose-5-phosphate

9

Where does ribose-5-phosphate come from?

Hexose monophosphate shunt pathway

10

A nuceotide minus the phosphate group is known as what?

nucleoside

11

What is an important co-enzyme in purine and pyrimidine synthesis?

folic acid

12

What is the name for the last enzyme in the production uric acid from purines?

Xanthine oxidase

13

What are the precursors for pyrimidine synthesis?

Glutamine, CO2

14

Where does pyrimidine and purine catabolism mainly occur?

liver

15

Three consecutive base pairs are known as what?

codon

16

what is the function of transfer RNA?

bring the correct amino acid in line with the correct codon during translation