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WorksheetsBiology MC Practice (from 2012 HSC)
Total questions: 20
Worksheet time: 40mins
What is the name of the process that results in organisms containing DNA from different species?
(A) Transcription
(B) Transgenics
(C) Translation
(D) Translocation
Which of the following are all forms of defence that prevent the entry of pathogens into the body?
(A) Cilia, sweat, saliva
(B) T cells, B cells, antibodies
(C) Inflammation, skin, phagocytosis
(D) Stomach acid, mucus, lymph system
How do vaccinations prevent disease?
(A) They increase the inflammation process.
(B) They enable the infected cells to seal off the pathogen.
(C) They increase the number of antibodies against the pathogen.
(D) They decrease the number of antigens that trigger the immune response.
Why is it important to continue research into new antibiotics?
(A) New prion diseases have been recently discovered.
(B) Resistant bacteria have evolved from the overuse of antibiotics.
(C) Viral infections require a broad range of antibiotics for eradication.
(D) New diseases are discovered regularly and all require new antibiotics.
What is an advantage of internal fertilisation?
(A) It requires many gametes to be produced.
(B) It involves sexual intercourse.
(C) It increases survival chance for offspring.
(D) It occurs in mammals.
Which process makes polypeptides from mRNA?
(A) RNA synthesis
(B) Transcription
(C) Polypeptide processing
(D) Translation
A kidney has around one million nephrons that filter nitrogenous wastes out ofthe blood.
The diagram shows a cross-section of a kidney and a nephron.
Where would the nitrogenous waste be at its highest concentration?
(A) The blood entering the kidneys in the renal artery.
(B) The blood leaving the kidneys in the renal vein.
(C) The fluid that leaves the kidneys via the ureter.
(D) The urea concentration remains constant in the blood and the kidneys.
Which option correctly classifies these diseases?
(A) HD: Genetic / K: Nutritional / M: Environmental
(B) HD: Nutritional / K: Environmental / M: Environmental
(C) HD: Genetic / K: Nutritional / M: Genetic
(D) HD: Nutritional / K: Environmental / M: Genetic
A student carried out an investigation to identify the presence of microbes in water from different sources.
The student's lab notes are shown.
What can be inferred from these results?
(A) The inoculation loop was not sterilised properly.
(B) The water from each of these sources is unsafe to drink.
(C) These water sources are contaminated with the same microbe.
(D) The agar plates were contaminated prior to the beginning of the experiment
Why do organ transplants trigger an immune response in a recipient?
(A) Antigens in the recipient's body recognise the organ as foreign.
(B) Cell surface markers on the organ attack the recipient's white blood cells.
(C) Antibodies in the recipient stimulate the production of antigens on the organ.
(D) The recipient's white blood cells recognise the antigens on the organ as foreign.
What would you use to make many copies of a desired gene outside of a cell?
(A) Transgenic bacteria
(B) PCR
(C) Bacterial plasmids
(D) Gene guns
The diagram shows a pathogen called Giardia.
What type of pathogen is Giardia?
(A) Bacterium
(B) Prion
(C) Protozoan
(D) Virus
What is the approximate length ofthis pathogen, including its flagella?
(A) 10 µm
(B) 20 µm
(C) 30 µm
(D) 40 µm
The DNA from a somatic cell of a white mouse is inserted into a donor egg from a brown mouse. The growing embryo is inserted into a black surrogate mother.
What colour will the mouse created by this process be?
(A) Brown
(B) Black
(C) White
(D) Cream
Each year a new influenza vaccine is made prior to the flu season. This is done to provide people with immunity to the strains ofinfluenza that are prevalent that year. The efficacy ofeach vaccine produced from year to year is measured as a percentage.
Which option correctly identifies the type of data being collected and the appropriate graph with which to display this data?
(A) Data: Continuous / Graph: Line
(B) Data: Continuous / Graph: Column
(C) Data: Discrete / Graph: Line
(D) Data: Discrete / Graph: Column
Identical twins have the same genotype.
Why are there small differences between the phenotypes of identical twins?
(A) Some genes are not co-dominant.
(B) Environment affects the expression of genes.
(C) Both parents are homozygous for those phenotypes.
(D) Chromosomes segregate independently during meiosis.
Which of the following correctly identifies the relationship between alleles, chromosomes and genes?
(A) Genes contain chromosomes and alleles.
(B) Chromosomes contain genes but not alleles.
(C) Alleles are found in chromosomes but not in genes.
(D) Genes are parts of chromosomes and have different alleles.
Epidemiological studies have shown that non-infectious diseases can sometimes be inherited.
What is the most likely cause of an inheritable non-infectious disease?
(A) Nutrition
(B) Radiation
(C) Cancer
(D) Genetics
Mice are not a perfect model for human pregnancies or human drug effects.
Why are experiments for such studies conducted on mice instead ofhumans?
(A) To save money by reducing costs.
(B) Humans might have genetic diseases that affect the results.
(C) To respect ethical guidelines.
(D) So that it takes longer to get the results.
What would be a suitable control group when using mice to study the effects of caffeine during pregnancy?
(A) One mouse given no caffeine during pregnancy.
(B) Many mice given no caffeine during pregnancy.
(C) One mouse given caffeine during pregnancy.
(D) Many mice given caffeine during pregnancy.
