A 1.2 Nucleic Acids

Question 1

What are the components of a nucleotide?

Answer 1

phospahte, pentose sugar, base

Question 1

DNA is the genetic matterial of all living organisms (True or False?)

Answer 1

True

Question 2

What is the backbone of the nucleic acid made of?

Answer 2

covalent sugar-phosphate bonds

Question 3

The nitrogenous bases

Answer 3

Adenine, Thymine, Cytosine, Guanine, Uracil

Question 4

Condensation bonds nucleotides into a strand (True or False?)

Answer 4

True

Question 5

What is the structure of DNA?

Answer 5

double helix made of two antiparallel strands of nucleotides with two strands linked by
hydrogen bonding between complementary base pairs

Question 6

How many bonds do Cytosine and Guanine form?

Answer 6

3

Question 7

How many bonds do Thymine and Adenine form?

Answer 7

2

Question 8

T+A and C+G nitrogenous bases. Is this True or False?

Answer 8

True

Question 9

What is the difference between RNA and DNA?

Answer 9

Strands:
2 DNA
1RNA
Nitrogenous bases:
ATGC- DNA
AUGC- RNA
Pentose sugar:
Dioxyriboese- DNA
Ribose- RNA

Question 10

What is the role of complementary base pairing in allowing genetic information to be replicated and expressed?

Answer 10

It provides a model which can easily be replicated, because T can only pair with A, and C can only bind to G.

Question 11

Conservation of the genetic code across all life forms is evidence of universal common ancestry (True or False?)

Answer 11

True

Question 12

Directionality of RNA and DNA

Answer 12

5’ to 3’ linkages in the sugar–phosphate backbone

Question 13

Purines

Answer 13

Adenine and Guanine

Question 14

Pyramidines

Answer 14

Cytosine, Uracil and Thymine

Question 15

What is the structure of a nucleosome?

Answer 15

DNA molecule wrapped around a core of eight histone proteins held together by an additional
histone protein attached to linker DNA

Question 16

go on “edit deck info” to find the quizlet flashcards for A1.2

Answer 16

:)