1. The Structure Of DNA

Question 1

What does DNA encode?

Answer 1

Hereditary information in a chemical language

Question 2

What is genetic information stored as?

Answer 2

A base sequence of DNA (the genotype)

Question 3

What does a DNA nucleotide consist of?

Answer 3

Deoxyribose sugar, phosphate and a base

Question 4

What do nucleotides bond covalently between?

Answer 4

deoxyribose and phosphate (the sugar-phosphate backbone)

Question 5

What are DNA doubke strands held together by?

Answer 5

Hydrogen bonds between complementary bases

Question 6

What is the base pairing in DNA?

Answer 6

Adenine to Thymine, cytosine to guanine

Question 7

What shape is the DNA molecule?

Answer 7

an antiparrallel double helix

Question 8

What does the antiparrallel structure have?

Answer 8

a 3’ (deoxyribose) and a 5’ (phosphate) end at each end of the double stranded molecule

Question 9

Is chromosomal DNA in prokaryotes linear or circular?

Answer 9

Circular

Question 10

Are plasmids in prokaryotes linear or circular?

Answer 10

Circular

Question 11

Are the chromosome of the mitochondria in eukaryotes linear or circular?

Answer 11

Circular

Question 12

Are the chromosome of chloroplasts in eukaryotes circular or linear?

Answer 12

Circular

Question 13

Is the plasmid in yeast circular or linear?

Answer 13

Circular

Question 14

Are the chromosomes in the nucleus of a eukaryote circular or linear?

Answer 14

Linear- tightly coiled and packaged with associated proteins