nucleic acids

Question 1

nucleic acids

Answer 1

composed of nitrogenous bases

Question 2

purines

Answer 2

2 rings of adenine and guanine

Question 3

pyrimidines

Answer 3

1 ring, thymine, cytosine, uracil

Question 4

nucleoside

Answer 4

nitrogenous base plus a sugar of either ribose or deoxyribose

Question 4

nucleotides

Answer 4

nucleoside plus phosphate (either 1, 2, 3 phosphates)

Question 5

name the nucleic acids?

Answer 5

purines
pyrimidines
nucleoside
nucleotide

Question 6

backbone of DNA?

Answer 6

sugar phosphate with a phosphoester bond

Question 7

configuration of DNA?

Answer 7

antiparallel dimer

Question 8

sugar of DNA?

Answer 8

deoxyribose

Question 9

base pairs of DNA

Answer 9

A=T 2 hydrogen bonds
G=C 3 glycogen bonds

Question 10

basic unit of chromatin?

Answer 10

nucleosome, DNA wrapped 2x around core of histone proteins

Question 11

what is chromatin?

Answer 11

DNA around a protein core, the protein is histone proteins

Question 12

histone proteins?

Answer 12

contain large amount of arginine and lysine. 2 copies each of H2A, H2B, H3, H4 (form head). H1 linker histone

Question 13

human genome?

Answer 13

46 total chromosomes
22 autosomal pairs
one pair of sex chromosomes

Question 14

RNA configuration?

Answer 14

single stranded

Question 15

RNA sugar?

Answer 15

ribose

Question 16

base pairs of RNA?

Answer 16

A=U 2 hydrogen bonds
G=C 3 hydrogen bonds

Question 17

transcription?

Answer 17

occurs in nucleus. complementary base pairs are added 5’ to 3’. DNA read 3’ to 5’

Question 18

nitrogenous bases?

Answer 18

hypoxathanine
adenine
guanine