HSC Biology 2019 Multiple Choice Questions Welcome to your HSC Biology 2019 Multiple Choice Questions, we recommend completing it within 40 mins, however, you can submit it even after the timer. Congratulations, every quiz you take you earn a credit! 0 Credits 0 Social Points Make sure you have registered and logged in to keep your earnings. 1. Which of the following is an example of a non-infectious disease? Polio caused by a virus Wheat rust caused by a fungus Haemophilia caused by a gene mutation Cholera caused by a bacterium 2. What does the body produce in response to a vaccine? Antibiotics Antigens Antibodies Activated toxins 3. The diagram shows the impact of birds feeding on a population of beetles over time. Which of the following accounts for the change in the beetle population? Mutation Gene flow Genetic drift Environmental pressure 4. The figure shows a part of a DNA molecule. How many complete nucleotides are shown in the figure? 8 1 2 4 5. Which of the following is part of the innate immune response? Stomach acid B lymphocytes Antibodies Phagocytes 6. Two types of bacteria were isolated from a patient’s throat swab and grown in pure culture on separate agar plates. On each plate there were FOUR different antibiotic discs, W, X, Y and Z. The photograph shows the plates seven days laterWhich antibiotic should be used to treat the patient? Y W X Z 7. A group of four students set out to determine the animal species diversity over an area of one hectare in each of five different habitats. Each student graphed their data as shown. Which of the graphs produced is the most suitable to represent animal species diversity in the different habitats? A C D B 8. Which of the following is an advantage for animals using internal fertilisation rather than external fertilisation? It relies on adaptations such as mating rituals It allows gametes to combine to form unique offspring. It prevents dehydration of gametes It involves large numbers of gametes 9. A group of islands are separated from each other by large stretches of water. Each island has its own policy on quarantine. A nearby country is experiencing an outbreak of an infectious disease in its cattle.An investigation is to be designed to find which of the quarantine policies operating on the islands is the most effective.Which of the following would be a suitable design feature of the investigation? The control is the number of infected cattle. The independent variable is quarantine policy. The independent variable is the number of infected cattle. The control is the smallest island. 10. Which of the following is always true of a mutation that produces a dominant allele? It will be lethal in a population. It will be expressed in heterozygous individuals. It will only be expressed in homozygous individuals. It will spread more quickly through the population than a recessive allele. 11. The glucose tolerance test is used to investigate the control of glucose in the human body. Patients consume 75 g of glucose and their blood glucose is monitored. Type 2 diabetes is a condition where the cells of the body do not respond adequately to insulin.Which graph could represent the results of glucose tolerance tests in a non-diabetic person and a person with untreated Type 2 diabetes? A C D B 12. Genetic drift is a gradual change in allele frequency in a population due to chance. gene frequency in a population due to natural selection. the genes of a population due to natural selection. the alleles of an individual due to mutation. 13. The following DNA base sequence is used to code for a sequence of four amino acids. CGC ATC ATG CTAWhich of the following correctly represents the anticodons on the transfer RNA during synthesis of this string of amino acids? GCG TAG TAC GAT GCG UAG UAC GAU CGC AUC AUG CUA CGC ATC ATG CTA 14. A germ-line mutation is known to have occurred. How is it possible that there has been no noticeable change in the phenotype of theoffspring? The mutation occurred in a protein-coding region The mutation occurred in a stretch of RNA. The mutation did not affect the DNA sequence of any gametes. The mutation occurred in a stretch of non-coding DNA. 15. The diagram shows the concentration of an antibody to a particular pathogen. Two students are exposed to the pathogen. Student A had previously been vaccinated against this pathogen. Student B had never been exposed to it.Which row of the table shows the most likely levels of antibody in the blood of eachstudent a week after exposure to the pathogen on this occasion? D C A B 16. The pedigree shows the inheritance of a genetic disorder. A B C D 17. The diagram shows the effect of the hormone oxytocin on the uterus during the birth of a mammal. B C D A 18. What type of structure must Cas9 be? mRNA Enzyme tRNA Ribosome 19. Scientists have been able to use biotechnology to ‘cut and paste’ DNA for decades. Why would the new CRISPR/Cas9 technology have improved the scientists’ success in cutting DNA of specific genes? gRNA has the same nucleotides as the target DNA. Cas9 has an active site that cuts target DNA. Cas9 is able to combine with specific DNA. gRNA has nucleotides complementary to the target DNA. Time is Up! Time's up Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Reddit (Opens in new window)
