The control centre of a living cell is the ...

cytoplasm.

nucleus.

chromosome.

cell membrane.

Question 1

Which of the following is not found in DNA?

Ribose

Deoxyribose

Question 2

Set 1

Thymine

Cytosine

Which one of the following carbohydrates is found in DNA?

Question 3

Deoxyribose

Glucose

Maltose

Ribose

In analysing the number of different bases in a DNA sample, the following result would be consistent with the base-pairing rules:

Question 4

A + G = C + T

A = G

A + T = G + T

A = C

Which one of the components below is not directly involved in translation?

tRNA

Question 5

DNA

mRNA

Ribosomes

The statement that best describes a nucleic acid and a nucleotide is ...

Question 6

nucleotides are monomers of nucleic acids.

nucleic acids are monomers of nucleotides.

nucleic acids are acids and nucleotides are  bases.

nucleotides are large molecules and nucleic acids small molecules.

The carriers of the hereditary information are found in the part numbered ...

Question 7 (Questions 7 and 8 refer to the diagram alongside)

3

1

2

4

Proteins are synthesised on the part numbered ...

Question 8  (Refer to the diagram above)

5

4

3

2

Where are the molecules of DNA most likely to separate during DNA replication?

Question 9

Cytosine and guanine

Phosphate ion and deoxyribose

Ribose and adenine

Ribose and thymine

Which one of the following statements is true of RNA?

Question 10

It contains uracil.

It is always a double chain of nucleotides.

It contains deoxyribose.

It is wound up as a helix.

During the replication of DNA, thymine always joins up with ...

adenine.

Question 11

guanine.

cytosine.

uracil.

Which compounds listed below together form a nucleotide?

Question 12

1, 3 and 5

2, 3 and 4

3, 4 and 5

1, 3 and 4

The purine bases of the DNA molecule are ...

Question 13

guanine and adenine.

adenine and thymine.

cytosine and thymine.

uracil and cytosine.

What is the complementary DNA sequence for the sequence A G T C?

Question 14

T C A G

C T A G

U C A G

C T G A

Which DNA strand acts as a template during DNA replication?

Question 15

Both strands.

Neither strands.

The one with all four nitrogenous bases.

The first one to receive a nucleotide.

The transcription of T G A C produces ...

Question 16

A C U G in RNA.

A C T G in RNA.

T G A C in RNA.

A C U G in DNA.

Transfer RNA transfers ...

Question 17

amino acids.

polypeptides.

anticodons.

codons.

All types of RNA are made of …

Question 18

nucleotides.

DNA.

amino acids.

ribosomes.

The exact copying of the information from DNA onto a messenger RNA takes place ...

Question 19

in the nucleus.

in the cytoplasm.

after translation.

on ribosomes.

The anticodon on t-RNA for A A A in a DNA molecule is ...

Question 20

A A A.

U U U.

T T T.

U A T.

1.  Phosphate ion;    2.  6C sugar;    3.  Nitrogenous base;    4.  Lipid;    5.  5C sugar

This is a learning exercise.

You must scroll to the top and examine your incorrect choices, with the view to improving your understanding of this topic. Refer to the Study Guide if necessary.

Set 2

Set 1

Set 2

Choose

Questions source: DBE  (Authorisation 11798)

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