Sets 10

Question 1

what are the chemical constituents of DNA?

Answer 1

phosphate , nitrogenous base & deoxyribose sugar

Question 2

what are deoxyribonucleoside triphosphates (dNTPS) and what 2 categories are they split up into ?

Answer 2

they are monomers needed in DNA synthesis and there split into pyrimidines & purines

Question 3

what are the 2 pyrimidines ?

Answer 3

deoxyribose cytidine triphosphate (dCTP) & deoxyribose thymidine triphosphate (dTTP)

Question 4

what are the 2 purines ?

Answer 4

deoxyribose adenosine triphosphate (dATP) & deoxyribose guanosine triphosphate (dGTP)

Question 5

What are nucleotides

Answer 5

they monophosphates are incorporated in DNA are on pyrimidine and purine

Question 6

what nucleotides are on pyrimidines ?

Answer 6

Deoxythymidine monophosphate (dTMP)
Deoxycytidine monophosphate (dCMP)

Question 7

what nucleotides are on purine ?

Answer 7

Deoxyadenosine monophosphate (dAMP)
Deoxyguanosine monophosphate (dGMP)

Question 8

how are nucleotide linked on pyrimindes and purines ?

Answer 8

through a phosphodiester bond

Question 9

what are dNTPs abbreviated as

Answer 9

A (Adenine) G (Guanine) T (Thymine) C (Cytosine)

Question 10

Out of ATGC which ones are pyrimidines & purines

Answer 10

TC are prymidines AG are purines

Question 11

what is complementary base pairing

Answer 11

where the opposite polarity of the two stands ( pyrimidines and purine pair

Question 12

what bonds complementary base pairing

Answer 12

hydrogen bonds

Question 13

what pairs in complementary base pairing

Answer 13

A & T pair along with G & C

Question 14

what do chromosomes carry ?

Answer 14

DNA & protein and genes

Question 15

Characterization of DNA started in 1869

Question 16

what did they do in 1923?

Answer 16

stain DNA which showed it was in chromsomes

Question 17

what did Fredierick Griffith do in 1923?

Answer 17

he studied with streptococcus pneumoniae bacteria which was smooth and rough

Question 18

genes are made of DNA

Question 19

who worked with viruses in 1952 ?

Answer 19

chase and hershey

Question 20

what are 3 things about a virus

Answer 20

1. not alive
2. dont have cells
3. Only contain DNA and protein

Question 21

DNA carries Genes

Question 22

what is DNA’s structure and who proposed it ? And when

Answer 22

a double helix and proposed by james watson & francis crick 1953

Question 23

every organism has an equal amounts of ATGC

Question 24

when does DNA complete a turn

Answer 24

every 34 A

Question 25

what are the three forms of DNA

Answer 25

a FORM , B form , Z form

Question 26

what type of DNA do viruses have

Answer 26

single stranded-DNA

Question 27

what type of is Linear double stranded chromosomes ?

Answer 27

eukaryotic nuclear genome

Question 28

what type is circular double started chromosomes ?

Answer 28

bacteria mitochondria ,chloroplasts

Question 29

which ones has no DNA

Answer 29

retro viruses

Question 30

how many hydrogen bonds does GC have ?

Answer 30

3

Question 31

how many hydrogen bonds does AT have

Answer 31

2

Question 32

what is the difference between smooth and the rough colonies

Answer 32

smooth had capsule rough had no capsule

Question 33

F. Griffith performed an experiment using smooth (S) and rough (R) Streptococcus pneumoniae bacteria. Mice were injected with either living S cells, living R cells, dead S cells, or a mixture of dead S cells and living R cells. Only the mixture killed the mice. What did this experiment prove?

Answer 33

a transferable substance could change the genetic makeup of an organism

Question 34

M. Chase and A. Hershey performed experiments with E. coli and bacteriophage. They grew the bacteriophage with labeled 35S (sulfur) or 32P (phosphorus), then added the bacteriophage to fresh E. coli culture. What piece of evidence from this experiment proved that DNA is the molecule of heredity?

Answer 34

32P-labeled DNA was almost exclusively found inside phage-infected bacterial cells