WorksheetsHSC Biology Past Paper Questions 2002
Total questions: 10
Worksheet time: 12mins
In a variety of garden peas, the allele for tall plants (T) is dominant over the allele for short plants (t). A cross between a tall plant and a short plant resulted in 50% of the
offspring being short. What were the genotypes of the parents?
Tt and tt
Tt and Tt
TT and Tt
TT and tt
In humans, which of the following homeostatic responses would be produced by a sudden and prolonged decrease in ambient temperature?
Decreased uptake of oxygen
Decreased muscular activity
Decreased blood flow to the skin surface
Decreased rate of internal metabolic processes
The graph shows information about four species of bacteria and their reproductive rates at different temperatures.
What conclusion can be drawn from this graph?
All bacterial species can adapt to a broad range of temperatures.
Individual species can reproduce in a broad range of temperatures.
All bacterial species are limited to a range between 0°C and 100°C.
Individual species reproduce in a relatively narrow range of temperatures.
The following paragraph describes a body response.
The response is protective, and it makes nearby blood vessels leak. Plasma and white cells move into the affected area, diluting and destroying the infectious agent. This is why the infection site swells, reddens and feels hot. Although we tend to think of this response in terms of annoyance, soreness and pain, it is actually a beneficial response.
What response does this paragraph describe?
Inflammation
Cell differentiation
The action of antibodies
The activation of helper T-cells
Hybridisation → Mutation → Natural Selection
Replication → Mutation → Natural Selection
Mutation → Natural Selection → Replication
Mutation → Hybridisation → Natural Selection
Influenza
Creutzfeldt-Jacob disease
Ringworm
Food poisoning
Which of the following is an example of quarantine used to control the spread of disease across regions of Australia?
Killing weeds in infested forests using herbicides and direct removal
Sterilisation of all food products that come from overseas
Sterilisation of all food products before packaging
Removal of fruit from cars travelling interstate
During the last 50 years, over-use of prescription drugs has led to the emergence of resistant strains of pathogens. Why is this a problem?
Resistant pathogens will cause new diseases.
Many diseases may become untreatable.
Prescription drugs will cause the release of toxins by pathogens.
A single prescription drug can no longer kill all strains of a pathogen.
Sex-linked and dominant
Sex-linked and recessive
Non sex-linked and dominant
Non sex-linked and recessive
Step A
Step B
Step C
Step D
