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Quiz von MissChurro, aktualisiert more than 1 year ago
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Erstellt von MissChurro
vor etwa 10 Jahre
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Frage 1
Frage
What is a Nucleus?
Antworten
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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
Frage 2
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A cell membrane is...
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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.
Frage 3
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What is a ribosome?
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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.
Frage 4
Frage
Cytoplasm is...
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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.
Frage 5
Frage
What is Mitochondria?
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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.
Frage 6
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Cells that need lots of energy contain many mitochondria. Which cells need lots if mitochondria?
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Liver and Muscle cells.
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Plant cells.
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Every cell.
Frage 7
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Instead of a nucleus, what do bacterial cells have?
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Chloroplasts.
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A single-circular strand of DNA.
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Mitochondria.
Frage 8
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What are Chromosomes?
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Cell malfunctions.
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Long molecules of coiled up DNA.
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Enzymes.
Frage 9
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DNA is a double helix (a double stranded spiral). Each of the two DNA strands are made up of what?
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Proteins.
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Cricks.
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Nucleotides.
Frage 10
Frage
Nucleotides contain a small molecule called a "base". How many bases are there and what are they called?
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3-BOE
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5-TRLE
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4-ACGT
Frage 11
Frage
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?
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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.
Frage 12
Frage
Who were the first scientists ever to build a model of DNA?
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Catson and Wrick.
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Darwin and Lamarck.
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Watson and Crick.
Frage 13
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What data did Watson and Crick use from other scientists to form the model of DNA?
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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.
Frage 14
Frage
What does DNA do every time a cell divides?
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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.
Frage 15
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What do new nucleotides do during this process?
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Break up.
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Join on using complementary base-pairing (ATCG). Making an exact copy.
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Lose base pairs.
Frage 16
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Which is correct?
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|-TA-| |-AC-| |-GT-| |-GA-| |-AT-|
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|-TA-| |-AT-| |-GC-| |-GC-| |-AT-|
Frage 17
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What does DNA control the production of?
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Proteins.
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Oxygen.
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Blood.
Frage 18
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A section of DNA that codes for a particular proteins is called a...
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Enzyme.
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Nucleus.
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Gene.
Frage 19
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Proteins are made up of chains of molecules called what?
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Cells.
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Chloroplasts.
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Amino Acids.
Frage 20
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Each different protein has its own particular number and order of amino acids.
Antworten
- True
- False
Frage 21
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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?
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Yes
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No
Frage 22
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How many bases is an amino acid coded by?
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4. (Quad)
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2. (Pair)
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3. (Triple)
Frage 23
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The amino acids are joined together to make proteins, following how many bases there are in a gene.
Antworten
- True
- False
Frage 24
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So, why does each gene contain a different sequence of bases?
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So it can produce more cells.
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So it can code for a unique protein.
Frage 25
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What carries the code to the Ribosomes?
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DNA.
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Proteins.
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mRNA.
Frage 26
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Where are the ribosomes?
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The Nucleus.
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The Cytoplasm.
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The Mitochondria.
Frage 27
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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...
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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.
Frage 28
Frage
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?
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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.
Frage 29
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DNA controls a cell by...
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turning the cell on and off.
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controlling protein production.
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making more DNA.
Frage 30
Frage
Different types of cell have different functions because they make different proteins.
Antworten
- True
- False
Frage 31
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Why do some genes switched off?
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So certain proteins are not produced.
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So more proteins can be produced in different places.
Frage 32
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In a muscle cell, which genes are switched on and which are switched off?
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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.
Frage 33
Frage
What is the function of a carrier molecule?
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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.
Frage 34
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What is the function of a hormone?
Antworten
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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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