HSC Biology 2019 Multiple Choice Questions

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Which of the following is an example of a non-infectious disease?

What does the body produce in response to a vaccine?

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?

The figure shows a part of a DNA molecule.

How many complete nucleotides are shown in the figure?

Which of the following is part of the innate immune response?

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 later

Which antibiotic should be used to treat the patient?

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?

Which of the following is an advantage for animals using internal fertilisation rather than external fertilisation?

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?

Which of the following is always true of a mutation that produces a dominant allele?

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?

Genetic drift is a gradual change in

The following DNA base sequence is used to code for a sequence of four amino acids.


Which of the following correctly represents the anticodons on the transfer RNA during synthesis of this string of amino acids?

A germ-line mutation is known to have occurred.

How is it possible that there has been no noticeable change in the phenotype of the

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 each
student a week after exposure to the pathogen on this occasion?

The pedigree shows the inheritance of a genetic disorder.

The diagram shows the effect of the hormone oxytocin on the uterus during the birth of a mammal.

What type of structure must Cas9 be?

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?

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