lec 8: nucleotides

Question 1

DNA from DNA

Answer 1

replication

Question 2

RNA from DNA

Answer 2

transcription

Question 3

protein from RNA

Answer 3

translation

Question 4

arrangement of genes

Answer 4

chromosomes

Question 5

total genetic information

Answer 5

genome

Question 6

purine bases

Answer 6

adenine & guanine

Question 7

pyrimidine bases

Answer 7

thymine, uracil, cytosine

Question 8

importance of free nucleotides

Answer 8

1. energy sources (AMP,ADP,ATP)
2. sulphate donor (PAP)
3. coenzymes: hydrogen carriers (NAD, NADP, FAD)
4. secondary messengers (cyclic AMP, cyclic GMP)
5. methyl donor: SAM (adenine nucleoside)

Question 9

methyl donor

Answer 9

SAM

Question 10

sulphate donor

Answer 10

PAP

Question 11

hydrogen donors

Answer 11

NADP, NAD, FAD

Question 12

carrier of amino acid from cytosol to ribosome in process of protein synthesis

Answer 12

tRNA

Question 13

synthesized in nucleus then passed to ribosomes

Answer 13

mRNA

Question 14

80% of total RNA

Answer 14

ribosomal RNA

Question 15

site for protein synthesis

Answer 15

ribosomal RNA

Question 16

purines of DNA and RNA

Answer 16

adenine and guanine

Question 17

pyrimidines of DNA

Answer 17

cytosine, thymine

Question 18

pyrimidines of RNA

Answer 18

cytosine, uracil

Question 19

sugar of DNA

Answer 19

2 de-oxyribose

Question 20

sugar of RNA

Answer 20

ribose

Question 21

site of DNA

Answer 21

nucleus and mitochondria

Question 22

site of RNA

Answer 22

mainly in cytosol, less commonly in nucleus and mitochondria

Question 23

functions of DNA

Answer 23

genetic information and RNA synthesis

Question 24

function of RNA

Answer 24

protein synthesis