1491285
Descrição
Quiz por MissChurro, atualizado more than 1 year ago
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Criado por MissChurro
aproximadamente 10 anos atrás
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Questão 1
Questão
What is a Nucleus?
Responda
-
Gel-like substance where most of the cell's chemical reactions happen.
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The part of the cell which contains DNA in the form of chromosomes
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Where proteins are synthesised
Questão 2
Questão
A cell membrane is...
Responda
-
where most of the reactions involved in respiration take place.
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what holds the cell together and controls what goes in and out.
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a gel-like substance where most of the cell's chemical reactions happen.
Questão 3
Questão
What is a ribosome?
Responda
-
Where proteins are synthesised.
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The part that holds the cell together and controls what goes in and out.
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Where most of the reactions involved in respiration take place.
Questão 4
Questão
Cytoplasm is...
Responda
-
the part of the cell which contains DNA in the form of chromosomes.
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a gel-like substance where most of the cell's chemical reactions happen.
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a relatively large structure that contains cell sap, a weak solution of sugar and salts.
Questão 5
Questão
What is Mitochondria?
Responda
-
Where most of the reactions involved in respiration occur.
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Where photosynthesis happens.
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Another name for a bacterial cell.
Questão 6
Questão
Cells that need lots of energy contain many mitochondria. Which cells need lots if mitochondria?
Responda
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Liver and Muscle cells.
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Plant cells.
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Every cell.
Questão 7
Questão
Instead of a nucleus, what do bacterial cells have?
Responda
-
Chloroplasts.
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A single-circular strand of DNA.
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Mitochondria.
Questão 8
Questão
What are Chromosomes?
Responda
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Cell malfunctions.
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Long molecules of coiled up DNA.
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Enzymes.
Questão 9
Questão
DNA is a double helix (a double stranded spiral). Each of the two DNA strands are made up of what?
Responda
-
Proteins.
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Cricks.
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Nucleotides.
Questão 10
Questão
Nucleotides contain a small molecule called a "base". How many bases are there and what are they called?
Responda
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3-BOE
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5-TRLE
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4-ACGT
Questão 11
Questão
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?
Responda
-
A pairs with G, and T pairs with C.
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A pairs with T and C pairs with G.
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T pairs with G and A pairs with C.
Questão 12
Questão
Who were the first scientists ever to build a model of DNA?
Responda
-
Catson and Wrick.
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Darwin and Lamarck.
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Watson and Crick.
Questão 13
Questão
What data did Watson and Crick use from other scientists to form the model of DNA?
Responda
-
X-Rays showing double helix and data showing that bases occurred in pairs.
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An X-ray of a skeleton.
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Graphs showing DNA shrinking.
Questão 14
Questão
What does DNA do every time a cell divides?
Responda
-
Adds another strand.
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Adds another "base" called O.
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Copies itself so that each new cells still has the full amount of DNA.
Questão 15
Questão
What do new nucleotides do during this process?
Responda
-
Break up.
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Join on using complementary base-pairing (ATCG). Making an exact copy.
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Lose base pairs.
Questão 16
Questão
Which is correct?
Responda
-
|-TA-| |-AC-| |-GT-| |-GA-| |-AT-|
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|-TA-| |-AT-| |-GC-| |-GC-| |-AT-|
Questão 17
Questão
What does DNA control the production of?
Responda
-
Proteins.
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Oxygen.
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Blood.
Questão 18
Questão
A section of DNA that codes for a particular proteins is called a...
Responda
-
Enzyme.
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Nucleus.
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Gene.
Questão 19
Questão
Proteins are made up of chains of molecules called what?
Responda
-
Cells.
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Chloroplasts.
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Amino Acids.
Questão 20
Questão
Each different protein has its own particular number and order of amino acids.
Responda
- True
- False
Questão 21
Questão
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?
Responda
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Yes
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No
Questão 22
Questão
How many bases is an amino acid coded by?
Responda
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4. (Quad)
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2. (Pair)
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3. (Triple)
Questão 23
Questão
The amino acids are joined together to make proteins, following how many bases there are in a gene.
Responda
- True
- False
Questão 24
Questão
So, why does each gene contain a different sequence of bases?
Responda
-
So it can produce more cells.
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So it can code for a unique protein.
Questão 25
Questão
What carries the code to the Ribosomes?
Responda
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DNA.
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Proteins.
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mRNA.
Questão 26
Questão
Where are the ribosomes?
Responda
-
The Nucleus.
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The Cytoplasm.
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The Mitochondria.
Questão 27
Questão
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...
Responda
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DNA is really big.
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The DNA will get lost.
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DNA is really small.
Questão 28
Questão
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?
Responda
-
It takes the code from the DNA.
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It produces more DNA.
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It copies the code from the DNA.
Questão 29
Questão
DNA controls a cell by...
Responda
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turning the cell on and off.
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controlling protein production.
-
making more DNA.
Questão 30
Questão
Different types of cell have different functions because they make different proteins.
Responda
- True
- False
Questão 31
Questão
Why do some genes switched off?
Responda
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So certain proteins are not produced.
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So more proteins can be produced in different places.
Questão 32
Questão
In a muscle cell, which genes are switched on and which are switched off?
Responda
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Bone, nerve and skin cells are switched on and muscle cells are off, to conserve energy.
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Or are muscle cells switched on and bone, nerve and skin cells are switched off.
Questão 33
Questão
What is the function of a carrier molecule?
Responda
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To carry messages around the body.
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Strengthen connective tissues.
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To transport smaller molecules.
Questão 34
Questão
What is the function of a hormone?
Responda
-
To produce proteins. e.g. muscle proteins.
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To carry messages around the body. e.g. insulin.
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To strengthen connective tissues.
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