Nucleic acids 2 ✅

Question 1

What does DNA carry

Answer 1

genetic code of all living organisms

Question 2

Viruses are not

Answer 2

living organism

Question 3

What makes viruses not living

Answer 3

they lack a cellular structure

Question 4

what are DNA and RNA

Answer 4

polymers made up of nucleotides

Question 5

Each nucleotide is made up from

Answer 5

A pentose sugar (5carbon atoms)
A nitrogen containing base
A phosphate group (acidic and negatively charged )

Question 6

The base and phosphate group are both

Answer 6

covalently bonded to the sugar

Question 7

List the bases in DNA

Answer 7

Cytosine
Guanine
Adenine
Thymine

Question 8

List the bases in RNA

Answer 8

Adenine
Guanine
Cytosine
Uracil

Question 9

What are example of purines

Answer 9

Adenine and Guanine

Question 10

What are examples of Pyrimidines

Answer 10

Cytosine
Uracil
Thymine

Question 11

How is a sugar - phosphate backbone formed

Answer 11

The phosphate group of one nucleotide is linked to the pentose sugar of another nucleotide by condensation reactions (releases of water molecules ) furlong a covalent bond

Question 12

3 different RNA

Answer 12

mRNA
tRNA
rRNA

Question 13

Function of Messenger RNA

Answer 13

formed in nucleus and transported to the ribosomes in the cytoplasm

Question 14

Function of Transfer RNA

Answer 14

responsible to transporting amino acids to ribosomes during a photosynthesis

Question 15

Function of Ribosoma RNA

Answer 15

forms part of ribosomes

Question 16

How many hydrogen bonds between A and T ?

Answer 16

2

Question 17

How many hydrogen bonds between C and G ?

Answer 17

3

Question 18

What is the coding strand

Answer 18

when one of the strands of the DNA carries the base sequence

Question 19

the sequence of bases determines

Answer 19

the order of amino acids

Question 20

how many different amino acids can be coded for

Answer 20

20

Question 21

What will the sequence of amino acids determine

Answer 21

the shape and function of the protein