MissChurro
Quiz by , created more than 1 year ago

Quiz on the B3 GCSE biology. Covers topics of Cells, DNA, Protein Synthesis, Functions of Proteins, More on Enzymes, Mutations, Multiplying cells, Meiosis, Gametes and Fertilisation, Stem Cells, Differentiation and Growth, Growth and Respiration.

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MissChurro
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B3- Science. Cells, Genes and Enzymes.

B3- Science. Cells, Genes and Enzymes.

Question 1 of 34

1

What is a Nucleus?

Select one of the following:

  • Gel-like substance where most of the cell's chemical reactions happen.

  • The part of the cell which contains DNA in the form of chromosomes

  • Where proteins are synthesised

Explanation

Question 2 of 34

1

A cell membrane is...

Select one of the following:

  • where most of the reactions involved in respiration take place.

  • what holds the cell together and controls what goes in and out.

  • a gel-like substance where most of the cell's chemical reactions happen.

Explanation

Question 3 of 34

1

What is a ribosome?

Select one of the following:

  • Where proteins are synthesised.

  • The part that holds the cell together and controls what goes in and out.

  • Where most of the reactions involved in respiration take place.

Explanation

Question 4 of 34

1

Cytoplasm is...

Select one of the following:

  • the part of the cell which contains DNA in the form of chromosomes.

  • a gel-like substance where most of the cell's chemical reactions happen.

  • a relatively large structure that contains cell sap, a weak solution of sugar and salts.

Explanation

Question 5 of 34

1

What is Mitochondria?

Select one of the following:

  • Where most of the reactions involved in respiration occur.

  • Where photosynthesis happens.

  • Another name for a bacterial cell.

Explanation

Question 6 of 34

1

Cells that need lots of energy contain many mitochondria. Which cells need lots if mitochondria?

Select one of the following:

  • Liver and Muscle cells.

  • Plant cells.

  • Every cell.

Explanation

Question 7 of 34

1

Instead of a nucleus, what do bacterial cells have?

Select one of the following:

  • Chloroplasts.

  • A single-circular strand of DNA.

  • Mitochondria.

Explanation

Question 8 of 34

1

What are Chromosomes?

Select one of the following:

  • Cell malfunctions.

  • Long molecules of coiled up DNA.

  • Enzymes.

Explanation

Question 9 of 34

1

DNA is a double helix (a double stranded spiral). Each of the two DNA strands are made up of what?

Select one of the following:

  • Proteins.

  • Cricks.

  • Nucleotides.

Explanation

Question 10 of 34

1

Nucleotides contain a small molecule called a "base". How many bases are there and what are they called?

Select one of the following:

  • 3-BOE

  • 5-TRLE

  • 4-ACGT

Explanation

Question 11 of 34

1

Each base forms cross links to a base on the other strand. This keeps the two DNA strands tightly wound together. But which base pairs, pair with each other?

Select one of the following:

  • A pairs with G, and T pairs with C.

  • A pairs with T and C pairs with G.

  • T pairs with G and A pairs with C.

Explanation

Question 12 of 34

1

Who were the first scientists ever to build a model of DNA?

Select one of the following:

  • Catson and Wrick.

  • Darwin and Lamarck.

  • Watson and Crick.

Explanation

Question 13 of 34

1

What data did Watson and Crick use from other scientists to form the model of DNA?

Select one of the following:

  • X-Rays showing double helix and data showing that bases occurred in pairs.

  • An X-ray of a skeleton.

  • Graphs showing DNA shrinking.

Explanation

Question 14 of 34

1

What does DNA do every time a cell divides?

Select one of the following:

  • Adds another strand.

  • Adds another "base" called O.

  • Copies itself so that each new cells still has the full amount of DNA.

Explanation

Question 15 of 34

1

What do new nucleotides do during this process?

Select one of the following:

  • Break up.

  • Join on using complementary base-pairing (ATCG). Making an exact copy.

  • Lose base pairs.

Explanation

Question 16 of 34

1

Which is correct?

Select one of the following:

  • |-TA-|
    |-AC-|
    |-GT-|
    |-GA-|
    |-AT-|

  • |-TA-|
    |-AT-|
    |-GC-|
    |-GC-|
    |-AT-|

Explanation

Question 17 of 34

1

What does DNA control the production of?

Select one of the following:

  • Proteins.

  • Oxygen.

  • Blood.

Explanation

Question 18 of 34

1

A section of DNA that codes for a particular proteins is called a...

Select one of the following:

  • Enzyme.

  • Nucleus.

  • Gene.

Explanation

Question 19 of 34

1

Proteins are made up of chains of molecules called what?

Select one of the following:

  • Cells.

  • Chloroplasts.

  • Amino Acids.

Explanation

Question 20 of 34

1

Each different protein has its own particular number and order of amino acids.

Select one of the following:

  • True
  • False

Explanation

Question 21 of 34

1

If each protein has its own particular number and order of amino acids, does this give the proteins a different shape or a different function?

Select one or more of the following:

  • Yes

  • No

Explanation

Question 22 of 34

1

How many bases is an amino acid coded by?

Select one of the following:

  • 4. (Quad)

  • 2. (Pair)

  • 3. (Triple)

Explanation

Question 23 of 34

1

The amino acids are joined together to make proteins, following how many bases there are in a gene.

Select one of the following:

  • True
  • False

Explanation

Question 24 of 34

1

So, why does each gene contain a different sequence of bases?

Select one of the following:

  • So it can produce more cells.

  • So it can code for a unique protein.

Explanation

Question 25 of 34

1

What carries the code to the Ribosomes?

Select one of the following:

  • DNA.

  • Proteins.

  • mRNA.

Explanation

Question 26 of 34

1

Where are the ribosomes?

Select one of the following:

  • The Nucleus.

  • The Cytoplasm.

  • The Mitochondria.

Explanation

Question 27 of 34

1

To make proteins, ribosomes use the code in the DNA. DNA is found in the cell nucleus an can't move out of it because...

Select one of the following:

  • DNA is really big.

  • The DNA will get lost.

  • DNA is really small.

Explanation

Question 28 of 34

1

If the DNA can't leave the cell then another molecule is needed to get the code from the DNA to the Ribosome. This is called mRNA. How is it used?

Select one of the following:

  • It takes the code from the DNA.

  • It produces more DNA.

  • It copies the code from the DNA.

Explanation

Question 29 of 34

1

DNA controls a cell by...

Select one of the following:

  • turning the cell on and off.

  • controlling protein production.

  • making more DNA.

Explanation

Question 30 of 34

1

Different types of cell have different functions because they make different proteins.

Select one of the following:

  • True
  • False

Explanation

Question 31 of 34

1

Why do some genes switched off?

Select one of the following:

  • So certain proteins are not produced.

  • So more proteins can be produced in different places.

Explanation

Question 32 of 34

1

In a muscle cell, which genes are switched on and which are switched off?

Select one of the following:

  • Bone, nerve and skin cells are switched on and muscle cells are off, to conserve energy.

  • Or are muscle cells switched on and bone, nerve and skin cells are switched off.

Explanation

Question 33 of 34

1

What is the function of a carrier molecule?

Select one of the following:

  • To carry messages around the body.

  • Strengthen connective tissues.

  • To transport smaller molecules.

Explanation

Question 34 of 34

1

What is the function of a hormone?

Select one of the following:

  • To produce proteins. e.g. muscle proteins.

  • To carry messages around the body. e.g. insulin.

  • To strengthen connective tissues.

Explanation

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