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Worksheets

Bell Work

Total questions: 10

Worksheet time: 15mins

Name
Class
Date
1.
Which of the following units are repeatedly joined together to form a strand of DNA?
a)
amino acids
b)
nucleotides
c)
fatty acids
d)
polysaccharides
2.

STRUCTURE: One difference between RNA and DNA is -

a)

RNA has thymine where DNA has ademine

b)

DNA is single stranded where RNA is double stranded

c)

DNA is made in the nucleus where RNA is made in the ribosomes

d)

RNA is single stranded where DNA is double stranded

3.

HISTORY: Took the X-Ray crystallography photographs that revealed that DNA is a Double Helix

a)

Rosalind Franklin

b)

Linnus Pauling

c)

Fredrick Griffeth

d)

Martha Chase

4.
In a molecule of double-stranded DNA, the amount of adenine present is always equal to the amount of _________.
a)
cytosine
b)
guanine
c)
thymine
d)
uracil
5.
DNA codes for...
a)
cholesterol
b)
proteins
c)
fatty acids
d)
a sandwich
6.

STRUCTURE: What Nitrogenous Base does RNA contain that DNA does not?

a)

Thymine

b)

Uracil

c)

Adenine

d)

Love

7.

STRUCTURE: Which 2 molecules form the sides of the DNA ladder?

a)

deoxyribose and adenine

b)

deoxyribose and a hydrogen bond

c)

sugar and the nucleus

d)

deoxyribose (sugar) and phosphate

8.

GENERAL: What kind of organic molecule is DNA?

a)

Protein

b)

Nucleic Acid

c)

Lipid

d)

Carbohydrate

9.

HISTORY: Built the first correct model of DNA

a)

Watson and Crick

b)

Linnus Pauling

c)

Rosalind Franklin

d)

Hershey and Chase

10.

HISTORY: Discovered that A and T bond together and C and G bond together...

a)

Watson and Crick

b)

Rosalind Franklin

c)

Fredrick Griffeth

d)

Erwin Chargaff