
BMS109 10% practice
Quiz by Anna Malkowska
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6 questions
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- Q1DNA replication is said to be:Semi-conservative because each new molecule contains one new strand and one old strandSemi conservative because each parent molecule gives rise to two identical daughter DNA molecules.Semi-conservative because each new strand is made with bits of the parent strandConservative because one completely new molecule is made using the parent molecule as the template.60s
- Q2Which of these is true about ribosomes? a. I They have 4 subunits. b. II tRNA carrying Met bind to the P site c. III They are made from rRNA. d. IV The subunits move together along mRNA.ii), iii) and iv) are correct.ii) and iii) are correct.I) and iii) are correct.All are correct.60s
- Q3Which of these describes Mendel’s second law best?states genes controlling different characteristics assort into gametes independently of each otheris true for all genesstates two alleles of a gene segregate from each other during gametogenesisis the principle of segregation60s
- Q4Which statement(s) is/ are true about mitochondria? I. Mitochondria have a double membrane. II. Mitochondria are widely believed to have evolved through the phagocytosis of primordial cells. III. Their membrane contains many porin molecules. IV. Mitochondria contain DNA.Only i) is true.Only ii) and iii) are true.Only i) iii) and iv) are true.All of the above are true.60s
- Q5Sickle Cell Anaemia:is caused by a single point mutationthe valine codon is changed to glutaminethe structure of the oxygen molecules is alteredcarriers are resistant to cholera60s
- Q6Pathogenesis describes:a mechanism which results in clinically evident diseasea process that increases the risk of developing a diseasea state in which the health of a human organism is impairedthe cause of disease60s