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Year 11 Biology Practice Exam Questions
Question One
The main difference between prokaryotic and eukaryotic cells is:
a.
b.
c.
d.
Prokaryotic cells do not contain DNA; eukaryotic cells do
Prokaryotic cells do not contain membrane-bound organelles; eukaryotic cells do
Eukaryotic cells are smaller than prokaryotic cells
All prokaryotic cells are photosynthetic whereas only some eukaryotic cells are.
Question Two
Yeast respires anaerobically; this is often referred to as fermentation. When yeast ferments the sugar in a
bread mixture, the substance produced that causes the bread dough to rise is:
a.
b.
c.
d.
carbon dioxide
ethanol
water
oxygen
Question Three
Which statement about mitochondria is correct?
a.
b.
c.
d.
they are found in prokaryotes
their function is to provide the cell with energy.
they are responsible for packaging substances into vesicles
their function is to produce proteins
Question Five
In the heart:
a.
b.
c.
d.
the left atrium receives blood from the left ventricle
oxygenated blood from the body is returned to the heart via veins
oxygenated blood is carried from the lungs to the heart via the pulmonary arteries
deoxygenated blood is carried from the heart to the lungs via the pulmonary arteries
Question Six
Which of the following is an example of chemical digestion?
a.
b.
c.
d.
churning of chyme in the stomach
action of pepsin on protein
grinding of grass with molars
peristalsis
Question Seven
In carnivores, the canines:
a.
b.
c.
d.
are used to grind meat into smaller pieces
are used to pierce flesh
have flat, rigid surfaces
are small compared to canines in omnivores
Question Eight
Cellular respiration is a chemical reaction that:
a.
b.
c.
d.
occurs in animal cells but not in plant cells
like photosynthesis, requires oxygen
is important in the maintenance of body temperature in mammals
like photosynthesis, occurs in animal cells
Question Nine
Facilitated diffusion and active transport
a.
b.
c.
d.
both require ATP
both carry solutes in only one direction
both require the use of carrier proteins
neither require ATP
Question Ten
Large molecules move out of a cell by
a.
b.
c.
d.
exocytosis
phagocytosis
plasmolysis
endocytosis
Question Eleven
Carbohydrates consist of:
a. monosaccharides
b. amino acids
c. disaccharides
d. starch
Question Twelve
The pancreas is responsible for:
a. production of bile to assist with breakdown of fats
b. peristalsis
c. production of insulin to assist uptake of glucose into cells
d. production of TSH to assist uptake of glucose into cells
Question Thirteen
Foregut fermenters:
a.
b.
c.
d.
have a highly specialised caecum to assist breakdown of cellulose
have vastly enlarged stomachs to assist with the breakdown of cellulose
eat a diet consisting of very little plant material
obtain very little carbohydrate from their herbivorous diet
Question Fourteen
Individual body cells obtain their nutrients by means of:
a.
b.
c.
d.
respiratory system
digestive system
nervous system
circulatory system
Question Fifteen
Blood vessels are classified as arteries, capillaries and veins. Which of the following is true?
a.
b.
c.
d.
an artery always carries oxygenated blood
a vein always carries deoxygenated blood
a vein always carries blood away from the heart
capillaries release oxygen and nutrients into tissues
Question Sixteen
Koalas only eat eucalyptus leaves. The food undergoes digestion for a long period of time in the gut. This is
essential so that:
a. the products of digestion can be absorbed into the bloodstream
b. the cells lining the small intestine can form the enzyme cellulase to break down the cellulose in the
leaves
c. bacteria in the caecum are able to digest cellulose, producing products that can be absorbed
across the intestine of the koala
d. the koala has time to rest as they sleep for most of the day
Question Seventeen
Mitosis is the process by which somatic cells replicate. During mitosis:
a.
b.
c.
d.
the parent cell gives rise to four identical daughter cells
prophase is the last stage
the single stranded chromosomes align down the middle of the cell in metaphase
the sister chromatids are separated in anaphase
Question Eighteen
An animal cell is placed in a hypotonic solution. You would expect:
a.
b.
c.
d.
the cell to decrease in size
the cell to remain the same size
the cell to increase in size and eventually burst
the cell to increase in size but not burst due to the presence of a cell wall
Question Nineteen
The role of the Golgi apparatus is:
a.
b.
c.
d.
protein synthesis
transportation of substances around the cell
packaging of molecules into vesicles
production of ATP
Total: 19 marks
Short Answer Questions:
Question One
The major function of the large intestine is to absorb water. Would individuals who are suffering from
diarrhoea absorb more or less water in their large intestine? Explain.
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2 marks
Describe how this may impact on the blood volume of the individual.
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1 mark
Total: 3 marks
Question Two
The activity of the enzyme amylase breaks down starch into maltose.
Is this an example of mechanical or chemical digestion? _______________________________________
1 mark
What type of carbohydrate is maltose?
_______________________________________
1 mark
What are two uses for carbohydrates in the human body?
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2 marks
Humans must consume carbohydrates in their diets. Plants produce their own source of carbohydrates via the
process of photosynthesis. Write a word equation for this process:
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1 mark
In what organelle does photosynthesis occur? _______________________________________
1 mark
In what form do plants store polysaccharides? ________________________________________
1 mark
Both plants and animals undergo cellular respiration. What is the purpose of this process?
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1 mark
What is the chemical equation for cellular respiration?
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1 mark
Total: 12 marks
Question Three
Celery pieces identical in mass were placed in the following solutions.
10% glucose
5% glucose
1% glucose
distilled water
The celery was left in these conditions for 30 minutes.
Which piece of celery would have the greatest loss of mass after 30 minutes? ____________________
1 mark
Explain your reasoning for your choice:
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2 marks
Why were the celery pieces identical in mass?
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2 marks
Total: 5 marks
Question Four
A student has a resting heart rate of 66 beats per minute. After running to catch the bus it rises to 128 beats
per minute. Provide reasons as to why the increase in heart rate occurred.
__________________________________________________________________________________________________________
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2 marks
As the student gets on the bus, they are breathing heavily. Apart from oxygen intake, suggest a reason for this
student’s increased breathing rate.
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2 marks
Erythrocytes (red blood cells) have an important function in the transportation of oxygen to body cells. What
is the substance in erythrocytes that enables them to do this? _____________________________________________
1 mark
Anaemia is a deficiency of red blood cells, which can lead to a lack of oxygen-carrying ability in individuals.
Explain why a feeling of tiredness is one symptom of this disorder.
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_________________________________________________________________________________________1 mark
Total: 6 marks