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Questions in this quiz (15)
1What are alternative forms of genes called?
- AAlleles
- BAutosomes
- CChromatids
- Dchromosomes
2What is the name of the theory which describes evolution as patterns of rapid first
appearances or extinctions followed by periods of little or no change?- AGradualism
- BConvergence
- CAdaptive radiation
- DPunctuated equilibrium
3Which adaptation would decrease water loss from a plant in a region with low rainfall?
- ABroad leaves
- BSurface roots
- CSunken stomates
- DLoosely packed epidermal cells
4Which of the following does NOT play a role in maintaining the health of an organism?
- AMitosis
- BCell death
- CGene expression
- DSexual reproduction
5An extremely high concentration of carbon dioxide is undesirable in active muscle tissue
because it will- Aincrease the pH.
- Bcause enzymes to denature.
- Cincrease cellular reaction rates.
- Dcause haemoglobin to release oxygen.
6Which of the following describes what happens to the muscles and the arteriole walls in
the skin when the core body temperature is below normal?- Amuscle of the skin: relax to lower the epidermal hairs
Arteriole walls in skin: expand - Bmuscles of the skin: Contract to raise epidermal hairs
Arteriole walls in skin: contract - Cmuscles of the skin: Relax to raise epidermal hairs
Arteriole walls in skin: expand - Dmuscles of the skin: Contract to lower epidermal hairs
Arteriole walls in skin: contract
- Amuscle of the skin: relax to lower the epidermal hairs
7A pathogen and a red blood cell are drawn to the same scale, with some features indicated
- AA virus
- BA prion
- CA fungus
- DA bacterium
8ATP is an organic molecule common to the metabolism of every species on Earth.
Which of the following statements explains why this fact is considered evidence for
evolution?- AAll species have evolved to be suited to the environment of Earth.
- BATP molecules were transferred between organisms early in the history of life.
- CThe gene for ATP developed in the earliest organisms and has been retained by
subsequent species. - DAll species on Earth developed the same gene for ATP as a consequence of
convergent evolution.
9Environment can affect phenotype by altering the sequence of bases in DNA.
Which of the following is an example of this- AHigh protein diets making children taller than their parents
- BStress causing the expression of one set of genes instead of another
- CLanguage and music lessons improving intelligence in young children
- DNuclear fallout from atomic bombs increasing birth defects in populations
10The following measures could be used to prevent the spread of this fruit fly across
Australia.
1. Australia-wide release of infertile fruit flies
2. Aerial spraying of orchards throughout the country
3. Spot spraying of newly affected orchards in Western Australia
4. Stopping the transport of fruit from Western Australia to other states
To prevent the spread of this fruit fly across Australia, which combination of measures
would be most practical to use?- A1 and 2
- B1 and 4
- C2 and 3
- D3 and 4
11In a certain plant species, individual plants have either yellow, red or orange flowers.
Two plants, each with a different flower colour, were crossed in a breeding experiment
like those carried out by Mendel. The F2 results were: 6 red, 11 orange and 5 yellow
flowered plants.
What were the genotypes of the original parent plants?- ARY and RY
- BRR and rr
- CRR and YY
- DRr and RY
12Why might epidemiology be considered more essential for the study of non‑infectious
diseases than for the study of infectious diseases?- AThe causes of infectious diseases have already been determined
- BOnly non‑infectious diseases are affected by patterns of behaviour
- CEpidemiology cannot be used to find the causes of infectious diseases.
- DKoch’s postulates are not useful in finding the causes of non‑infectious diseases
13Students conducted a large first-hand investigation into enzyme activity.
The aim in the report is shown.
Aim: To determine the optimum pH of four different enzymes.
How many independent variables were in this first-hand investigation?- A1
- B2
- C4
- D5
14The intestinal tract of a human foetus is sterile.
After birth, microflora from the mother are transferred to the baby’s mouth
through close contact. After a year, the microflora of the baby is similar to the
mother’s, with the baby’s immune system ignoring these microbes.
Also during the first year of life, breast milk from the mother provides
antibodies to the baby for any disease the mother has already experienced.
When breastfeeding ceases, these antibody levels in the baby start to fall.
After the first year, any new species of invading bacteria is treated as a pathogen
by the baby’s immune system.
A medical consequence for six‑month‑old babies that have only been bottle‑fed with
formula milk and not breastfed is that- Athey will not develop microflora.
- Btheir immune system will be damaged.
- Ctheir consumption of milk cannot be quantified.
- Dthey will be at increased risk of infectious disease.
15Strict hygiene practices are followed in the care of newborns, whereas hygiene practices
in the care of older babies are less emphasised.
Which of the following is the best reason for this difference?- AVaccinations render personal hygiene unnecessary for older babies
- BProcaryotic cells are not identified as antigens in early development.
- CAntibiotic treatments kill bacterial populations in the digestive system
- DEarly exposure to pathogens helps to build a strong immune system.
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- hsc Biology Quiz on Multiple choice, created by renae.schwebel on 12/05/2016.
- Author
- renae.schwebel
- Language
- English
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