* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Mr Proffitt – IB Biology Name Unit 3 Test Multiple Choice – 1 Mark
Agarose gel electrophoresis wikipedia , lookup
DNA profiling wikipedia , lookup
Promoter (genetics) wikipedia , lookup
Endogenous retrovirus wikipedia , lookup
Silencer (genetics) wikipedia , lookup
SNP genotyping wikipedia , lookup
Epitranscriptome wikipedia , lookup
Gene expression wikipedia , lookup
Real-time polymerase chain reaction wikipedia , lookup
Genomic library wikipedia , lookup
Transcriptional regulation wikipedia , lookup
Bisulfite sequencing wikipedia , lookup
Community fingerprinting wikipedia , lookup
Genetic code wikipedia , lookup
Gel electrophoresis of nucleic acids wikipedia , lookup
Biochemistry wikipedia , lookup
Non-coding DNA wikipedia , lookup
Molecular cloning wikipedia , lookup
Transformation (genetics) wikipedia , lookup
DNA supercoil wikipedia , lookup
Point mutation wikipedia , lookup
Vectors in gene therapy wikipedia , lookup
Artificial gene synthesis wikipedia , lookup
Deoxyribozyme wikipedia , lookup
Mr Proffitt – IB Biology Name _____________________________ Unit 3 Test Multiple Choice – 1 Mark Each. Select the correct answer of the given choices. 1. Which events occur during the G1 phase and S phase of the cell cycle? A. B. C. D. G1 phase S phase DNA replicates mitosis begins cell divides cell grows cell grows cell divides mitosis begins DNA replicates (Total 1 mark) 2. What is the sequence of stages during the cell cycle? A. G1 → S → G2 → mitosis → cytokinesis B. mitosis → G1 → G2 → cytokinesis → S C. G1 → G2 → S → mitosis → cytokinesis D. G1 → G2 → mitosis → cytokinesis → S 3. Which of the following does not occur during interphase? A. Replication B. Translation C. Cytokinesis D. An increase in the number of mitochondria 4. The DNA of a particular cell is damaged, so that the cell continues to divide uncontrollably. What is the possible result? A. Coronary heart disease B. AIDS C. Tumour formation D. Down syndrome 5. Which molecule is found in both DNA and RNA? A. Ribose B. Uracil C. Phosphate D. Amino acid 6. The following diagram shows a short stretch of DNA. What bases are indicated by labels Y and Z? (Total 1 mark) (Total 1 mark) (Total 1 mark) (Total 1 mark) A. B. C. D. Y thymine thymine uracil uracil Z adenine guanine guanine adenine (Total 1 mark) IB Questionbank Biology 1 7. Which molecules form the nucleotide marked in the diagram? A. B. C. D. phosphate, deoxyribose and nitrogenous base phosphorus, ribose and nitrogenous base phosphorus, deoxyribose and guanosine phosphate, ribose and guanine (Total 1 mark) 8. Which of the following forms the nucleosome? A. DNA and histone molecules B. DNA only C. RNA and histone molecules D. Histone molecules only 9. What are Okazaki fragments? A. Short lengths of RNA primase attached to the DNA during replication B. Short sections of DNA formed during DNA replication C. Nucleotides added by DNA polymerase I in the same direction as the replication fork D. Sections of RNA removed by DNA polymerase III and replaced with DNA 10. What principle is necessary to preserve the sequence of DNA during replication? A. Base pairing is complementary. B. One gene codes for one polypeptide. C. Substrates are specific to enzymes. D. The genetic code is universal. (Total 1 mark) (Total 1 mark) (Total 1 mark) 11. What is a codon? A. A sequence of nucleotides on rRNA that corresponds to an amino acid B. A sequence of nucleotides on mRNA that corresponds to an amino acid C. A sequence of nucleotides on tRNA that corresponds to an amino acid D. A sequence of nucleotides on DNA that corresponds to an amino acid (Total 1 mark) 12. The antisense strand on the DNA molecule coding for three codons of a gene is TATCGCACG What are the anticodons of the three tRNA molecules that correspond to this sequence? A. UAU, CGC and ACG B. ATA, GCG and TGC C. AUA, GCG and UGC D. TAT, CGC and ACG (Total 1 mark) IB Questionbank Biology 2 13. The table below shows the codons that determine different amino acids in protein translation. Second base in codon Third base U C A G in codon Phe Ser Tyr Cys U Phe Ser Tyr Cys C Leu Ser — — A Leu Ser — Trp G C Leu Pro His Arg U Leu Pro His Arg C Leu Pro Gln Arg A Leu Pro Gln Arg G A Ile Thr Asn Ser U Ile Thr Asn Ser C Ile Thr Lys Arg A Met Thr Lys Arg G G Val Ala Asp Gly U Val Ala Asp Gly C Val Ala Glu Gly A Val Ala Glu Gly G What is the sequence of the amino acids that is being translated from the following mRNA sequence? 5´ AUGGGUGCUUAUUGGUAA 3´ A. Met-Pro-Arg-Ile-Thr B. Met-Cys-Ser-Tyr-Trp C. Met-Gly-Ala-Tyr-Trp D. Met-Gly-Tyr-Ala-Thr First base in codon U (Total 1 mark) 14. What happens during translation? A. Copying of DNA to produce DNA B. Copying of DNA to produce mRNA C. Copying of DNA to produce tRNA D. Polypeptide synthesis (Total 1 mark) IB Questionbank Biology 3 Short Answer – Various marks. Answer, to the best of your ability, the following questions. Be sure to pay attention to the number of marks available for each question! 15. The micrograph below shows an adult human stem cell. [© Science Photo Library. Used with permission.] (a) The cell cycle can be divided into two parts: interphase and mitosis. (i) Identify, with a reason, whether the stem cell in the micrograph is in interphase or mitosis and state your reasoning. ........................................................................................................................... ........................................................................................................................... (2) (ii) Deduce two processes that occur in human cells during this part of the cell cycle, but not during the other part. 1. ....................................................................................................................... 2. ....................................................................................................................... (2) (Total 4 marks) 16. The following sequence of pictures, made using an electronic imaging technique, shows a cell undergoing division. [Adapted by permission from Macmillan Publishers Ltd, Fuller, B G et al. 2008. “Midzone activation of aurora B in anaphase produces an intracellular phosphorylation gradient”. Nature. Vol 453.] (a) State the stage of mitosis typified by image II. ...................................................................................................................................... (1) IB Questionbank Biology 4 (b) List two processes that involve mitosis. ...................................................................................................................................... ...................................................................................................................................... (2) (c) State the process that results in tumour (cancer) formation or development. ...................................................................................................................................... (1) (Total 4 marks) 17. The diagram below shows two nucleotides linked together to form a dinucleotide. (a) (i) Identify the chemical group labelled I. ........................................................................................................................... (1) (ii) State the type of bond labelled II. ........................................................................................................................... (1) (b) Distinguish between the sense and antisense strands of DNA during transcription. ...................................................................................................................................... ...................................................................................................................................... ...................................................................................................................................... (c) Compare the DNA found in prokaryotic cells and eukaryotic cells. ...................................................................................................................................... ...................................................................................................................................... ...................................................................................................................................... ...................................................................................................................................... ...................................................................................................................................... (d) Explain the role of transfer RNA (tRNA) in the process of translation. ...................................................................................................................................... ...................................................................................................................................... ...................................................................................................................................... ...................................................................................................................................... ...................................................................................................................................... (1) (2) (2) (Total 7 marks) IB Questionbank Biology 5 Essay – CHOOSE ONE. Answer one of the following essay choices. Take note of the command terms, and number of marks awarded for each question. – 11 Marks. 19. Up to two additional marks are available for the construction of your answers. (2) (a) Distinguish between RNA and DNA. (c) Outline the process of translation. (3) (6) (Total 11 marks) 20. Up to two additional marks are available for the construction of your answers. (2) (a) Explain the process of DNA replication. (6) (b) Explain the process of transcription. (3) (Total 11 marks) IB Questionbank Biology 6