Lecture 13 Flashcards Preview

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Flashcards in Lecture 13 Deck (11):
1

What is a gene?

The unit of inheritance that programs the amino acid sequence of a polypeptide

2

What are genes made of?

DNA (a nucleic acid made of monomers called nucleotides)

3

What are the 2 types of nucleic acids?

DNA and RNA

4

What is a nucleoside?

the nitrogenous base with the sugar

5

what is a nucleotide?

the nucleoside (nitrogenous base + sugar) including phosphate group

6

What are the 2 types of nitrogenous base?

pyrimidines (C,T,U) and Purines (A,G)

7

What is the sugar of DNA?

deoxyribose

8

What is the sugar of RNA?

ribose

9

What is thee shape of a DNA molecule?

double helix (antiparallel 5' >> 3')

10

What are the complementary base pairing in DNA?

A-T and G-C

11

What are the differences between RNA and DNA? (3)

1. DNA double strand double helix) where RNA is single strand
2. In RNA T is changed to U
3.DNA sugar is deoxyribose and the RNA sugar is ribose
4.base pairing on DNA is on different strands where the base-pairing on RNA is on the same strand