Free Printable Components of DNA, Genetic Code, Transcription/Translation

1.

Which numbered components represent the sugar-phosphate backbone?

a)

1 & 2

b)

2 & 3

c)

3 & 4

d)

1 & 3

2.

Which numbered component represents deoxyribose sugars?

a)

1

b)

2

c)

3

d)

4

3.

Which numbered component represents nitrogen bases?

a)

1

b)

2

c)

3

d)

4

4.

Which numbered component represents a complete nucleotide?

a)

1

b)

2

c)

3

d)

4

5.

Which of the following components is found in DNA, but not in RNA?

a)

Uracil

b)

Phosphate

c)

Adenine

d)

Deoxyribose

6.

Most of a person’s physical traits are determined by the genetic code. Which components of DNA are referred to as the genetic code?

a)

Phosphate groups

b)

Deoxyribose sugars

c)

Nitrogenous bases

d)

Hydrogen bonds

7.

Which of these make up the primary link between a gene and the expression of a trait?

a)

proteins

b)

sugars

c)

lipids

d)

vitamins

8.

In DNA, which of the following determines the traits of an organism?

a)

Amount of adenine

b)

Number of sugars

c)

Sequence of nitrogen bases

d)

Strength of hydrogen bonds

9.

The picture shows an x-ray diffraction of DNA. The x-ray diffraction of DNA led to the idea that the structure of DNA is in the form of —

a)

globular proteins

b)

beta sheets

c)

a double helix

d)

polypeptide chains

10.

The information in DNA molecules is coded by using the –

a)

angle of rotation in the helix

b)

sequence of the sugars in the backbone

c)

order of nitrogen bases

d)

type of sugar in each nucleotide

11.

The instructions in DNA are the blueprints for making all of the cell’s –

a)

minerals

b)

sugars

c)

lipids

d)

proteins

12.

How does DNA in cells determine an organism’s complex traits?

a)

DNA contains codes for proteins

b)

DNA is used to make all cell parts

c)

DNA produces cellular energy

d)

DNA is stored in the cell nuclei

13.

Which series of bases will complete this strand of DNA?

a)

CCTGAT

b)

ACTGGC

c)

GTAGGC

d)

TCAGGG

14.

Which numbered component represents a nucleotide?

a)

1

b)

2

c)

3

d)

4

15.

Which numbered component(s) carries the genetic codes?

a)

1

b)

2

c)

3

d)

1 & 3

16.

What is the arrow pointing at?

a)

Phosphate group

b)

Deoxyribose sugar

c)

Hydrogen bond

d)

Sugar-phosphate backbone

17.

The genetic code is used to translate the information in DNA into a specific protein. The genetic code is –

a)

variable from cell to cell

b)

different for every living thing

c)

unique to each species

d)

common to all organisms

18.

The fact that genes from one species can be placed into another is evidence that all living things —

a)

depend on the same food supply

b)

are made of eukaryotic cells

c)

share a genetic code

d)

have identical genomes

19.

Most scientists believe that the genetic code provides evidence that all organisms are related. This is primarily because –

a)

all living things use the same basic code

b)

some species use similar codes

c)

each species code is a little different

d)

every species has some form of code

20.

How many nucleotides are needed to code for one amino acid?

a)

1

b)

3

c)

4

d)

6

Components of DNA, Genetic Code, Transcription/Translation

Total questions: 20

Worksheet time: 10mins

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