Chapter 7

Question 1

Building blocks of DNA

Answer 1

phosphate, deoxyribose, four nitrogenous bases

Question 2

4 nitrogenous bases

Answer 2

adenine

guanine

cystosine

thymine

Question 3

adenine and guanine make

Answer 3

purine (ring structure)

Question 4

cystosine and thymine make a single ring structure called

Answer 4

pyrminidine

Question 5

Nucleotides

Answer 5

chemical components of DNA in groups, containing phosphate group, deoxyribose sugar, and nitrogenous bases

Question 6

Chargaff Rules

pyridine

Answer 6

T + C = purine (A+G)

Question 7

Amount of T always equals

Answer 7

Amount of A

Question 8

Amount of C

Answer 8

= G

Question 9

Antiparallel

Answer 9

double straneded DNA molecule two backbones in oppisote oreintation

Question 10

Two groobes

Answer 10

major and minor grooves

Question 11

Most DNA composed of which groove

Answer 11

major

Question 12

DNA is a double helix composed of two nucleotide held together by a pairing of

Answer 12

A with T

G with C

Question 13

Genetic Code

Answer 13

write info in DNA as seq of nucleotide and translate into amino acid in protein

Question 14

if DNA sequence specifies amino acid sequence then

Answer 14

mutation is possible by one sub of one base at one or more positions

Question 15

Complementary Base

Answer 15

A with T

G with C

Question 16

Template

Answer 16

two single strand act as, mold to assembly of complementary bases to reform double helix with orignal

Question 17

Semiconservative replication

Answer 17

double helix of each daugher DNA one strand from original DNA and one newly synthesixed strand

Question 18

Conservative replication

Answer 18

parent DNA conserved and single daughter is produced with two newly syntheiszzed strands ( 297)