Structure of DNA

Question 1

DNA is composed of repeating units called?

Answer 1

Nucleotides

Question 2

A DNA nucleotide is made of?

Answer 2

Deoxyribose Sugar, Phosphate and Base

Question 3

The DNA bases are

Answer 3

Adenine- Thymine

Guanine- Cytosine

Question 4

The shape of a DNA molecule is?

Answer 4

Double Helix

Question 5

What does antiparallel mean

Answer 5

the 2 strands of DNA run in opposite directions

Question 6

What is the DNA backbone made of?

Answer 6

Sugar phosphate

Question 7

What is added to the 5’ end of DNA?

Answer 7

Phosphate

Question 8

What is added to 3’ end of DNA?

Answer 8

Deoxyribose Sugar

Question 9

What bonds are present between bases and hold the strands together?

Answer 9

Hydrogen Bonding

Question 10

what bond are nucleotides held together by

Answer 10

Chemical bonds

Question 11

which base pairs with adenine

Answer 11

thymine

Question 12

which base pairs with guanine

Answer 12

cytosine

Question 13

what does the base sequence of DNA form

Answer 13

the genetic code

Question 14

what is a eukaryote?

examples:

Answer 14

an organism with a membrane bound nucleus

plant, animal, fungi

Question 15

what is a prokaryote?

examples:

Answer 15

an organism lacking a membrane bound nucleus

bacteria

Question 16

where is dna found in eukaryotes and in what form

Answer 16

linear chromosomes in the nucleus

circular chromosomes in mitochondria abs chloroplasts

Question 17

where is dna found in prokaryotes and in what form

Answer 17

single circular chromosomes

dna found in plasmids aswell

Question 18

what is a plasmid

Answer 18

small ring or DNA

Question 19

which eukaryote contains plasmids

Answer 19

yeast

Question 20

how is DNA packed in linear chromosomes and with what protein

Answer 20

tightly coiled and packed with associated proteins called histones