1) What is the structure of DNA like? a) A ladder b) A helix c) A double helix 2) What is the name of a length of DNA which codes for proteins? a) Gene b) Jean c) Protein d) Amino acid e) Levi's 3) A group of specialised cells of the same type working together to do the same job are called a) A tissue b) A Kleenex c) An Organ d) An Organelle 4) How is a red blood cell different to the other cells in your body? a) It only has 23 chromosomes b) It has no chromosomes c) It has 92 chromosomes d) None of the above 5) How many chromosomes are there in a human body cell? a) 1 b) 2 c) 23 d) 46 6) How many proteins is one gene responsible for making? a) 1 b) 3 c) 4 d) 20 7) Where are genes kept inside the cell? a) Cytoplasm b) Mitochondria c) Nucleus d) Chloroplast 8) How many different bases does DNA have? a) 1 b) 2 c) 3 d) 4 e) 5 f) 6 9) How many different bases does RNA have? a) 1 b) 2 c) 3 d) 4 e) 5 f) 6 10) How many bases in DNA code for ONE amino acid? a) 1 b) 2 c) 3 d) 4 e) 5 f) 6 11) What do we call the 3 bases which code for one amino acid? a) amino acid b) protein c) codon d) code 12) What base matches up with A in DNA? a) C b) G c) T d) U 13) What base matches up with A in mRNA? a) C b) G c) T d) U 14) What is the complementary DNA sequence to this: ATCGTA a) ATCGTA b) TAGCAT c) UAGCAU 15) What is the complementary mRNA sequence to this: ATCGTA a) ATCGTA b) TAGCAT c) UAGCAU 16) DNA is too large to leave the nucleus a) True b) False 17) DNA is too large to leave the nucleus, so a copy is made called mRNA. What is the first step in this process? a) The gene (section of DNA) unzips b) The amino acids unzip c) The protein unzips 18) What is the second step? a) amino acids come and join up to the matching bases b) complementary (matching) mRNA bases join up with the DNA c) matching ribosomes come and join up to the DNA d) ermmm...what was the question again? 19) What is the third step? a) the mRNA leaves the nucleus b) the ribosomes enter the nucleus c) the amino acids enter the nucleus 20) Which of these is NOT a way in which mRNA is different to DNA? a) mRNA is single stranded b) mRNA is double stranded c) mRNA uses the base U instead of T 21) Where are proteins made? a) In the nucleus b) At the mitochondria c) At the ribosomes d) At the chloroplasts 22) What happens at the ribosomes? a) Each single base is read and a matching amino acid comes to the ribosome b) Each set of three bases are read and a matching amino acid comes to the ribosome 23) What happens when amino acids line up next to each other at the ribosomes? a) A DNA bond is made b) A peptide bond is made c) A pepsi bond is made 24) Which of these is true? a) mRNA makes a copy of the DNA b) the copy of DNA is called mRNA 25) Genes get turned into protein at the ribosomes a) True b) False
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b5 quiz
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