Chapter 2: The Molecular Nature of Genes

Question 1

1. temperature
2. DNA conc
3. pH
4. time

Answer 1

renaturation variables (x4)

Question 2

DNA nucleotide components

Answer 2

nitrogenous base, sugar, phosphate group

Question 3

join polynucleotide strands of DNA and RNA

Answer 3

phosphodiester bonds

Question 3

(renaturation)=process of bringing together 2 complementary nucleotide strands

Answer 3

Annealing (aka?)

Question 5

hybridization

Answer 5

process of bringing together a complimentary strand of DNA and RNA which occurs at higher temp than DNA/DNA annealing

Question 6

transformation with Strept pneumoniae

Answer 6

frederick griffith

Question 6

phage proteins remained outside bacterial cells while phage DNA entered cells

isotopically labelled T2 protein with S (red) and DNA with P (orange), mixed T2 with E. coli

Answer 6

alfred hershey & martha chase experiment

experiment?

Question 6

nitrogenous base, sugar, phosphate group

Answer 6

DNA nucleotide components

Question 6

bases joined together in DNA & RNA

e.g.: adenine base=adenosine in RNA, deoxyadenosine in DNA

Answer 6

nucleoside units (e.g.)

Question 6

subunits of DNA and RNA

nucleosides w/ phosphate group

Answer 6

nucleotides

composed of?

Question 7

hydrophobic, 10 bases per turn

Answer 7

Bases: property and number

Question 8

5’ vs 3’

Answer 8

5’=free phosphate, 3’=hydroxyl group

Question 10

Smooth Strept. pneumoniae pathogenicity

Answer 10

contain capsules protecting them from animal’s defense system

Question 11

phosphodiester bonds

Answer 11

join polynucleotide strands of DNA and RNA

Question 12

Transformation

Answer 12

a change in genotype and phenotype due to the assimilation of external DNA by a cell

Question 14

renaturation variables (x4)

Answer 14

1. temperature
2. DNA conc
3. pH
4. time

Question 15

Bases: property and number

Answer 15

hydrophobic, 10 bases per turn

Question 16

alfred hershey & martha chase experiment

experiment?

Answer 16

phage proteins remained outside bacterial cells while phage DNA entered cells

isotopically labelled T2 protein with S (red) and DNA with P (orange), mixed T2 with E. coli

Question 18

nucleoside units (e.g.)

Answer 18

bases joined together in DNA & RNA

e.g.: adenine base=adenosine in RNA, deoxyadenosine in DNA

Question 19

process of bringing together a complimentary strand of DNA and RNA which occurs at higher temp than DNA/DNA annealing

Answer 19

hybridization

Question 20

found that DNA base composition varies between species

DNA/RNA composed of purine and pyrimidine bases: adenine & guanine; cytosine, uracil (RNA), & thymine

Answer 20

erwin chargaff (x2)

Question 21

nucleotides

composed of?

Answer 21

subunits of DNA and RNA

nucleosides w/ phosphate group

Question 22

a change in genotype and phenotype due to the assimilation of external DNA by a cell

Answer 22

Transormation

Question 23

5’=free phosphate, 3’=hydroxyl group

Answer 23

5’ vs 3’

Question 24

frederick griffith

Answer 24

transformation with Strept pneumoniae

Question 26

Annealing (aka?)

Answer 26

(renaturation)=process of bringing together 2 complementary nucleotide strands

Question 27

contain capsules protecting them from animal’s defense system

Answer 27

Smooth Strept. pneumoniae pathogenicity

Question 28

erwin chargaff (x2)

Answer 28

found that DNA base composition varies between species

DNA/RNA composed of purine and pyrimidine bases: adenine & guanine, cytosine, uracil (RNA), and thymine