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DNA & RNA INtroduction

Total questions: 9

Worksheet time: 2mins

Name
Class
Date
1.

DNA is a biological molecule made of smaller units called

a)

nucleosides

b)

nucleotides

c)

adenine, thymine, cytosine, guanine

d)

all of the above

2.

The image on the left is showing the

a)

ribose sugar

b)

deoxyribose sugar

3.

Adenine & Guanine are

a)

Purines

b)

Pyrimidines

4.

The bond formed between the Nitrogenous base & the sugar

a)

phosphodiester

b)

glycosidic

c)

ester

5.

this bond results in the backbone of the nucleic acids

a)

ester bond

b)

glycosidic

c)

phosphodiester

6.

this nitrogenous base is only found in RNA

(a)  

7.

select all that apply. phosphodiester bonds are formed between __________________ and ____________________

a)

phosphate group on carbon 5 of sugar

b)

phosphate group on carbon 1 of sugar

c)

carbon 3 on another pentose sugar

d)

nitrogenous base

8.

(a)   is the reaction that takes place to form the bonds in nucleic acids

9.

The structure in the image is a

(a)