Year 11 Biology Preliminary Exam

Biology Preliminary exam (75 marks) 

Multiple Choice (20 marks)

Question 1.

Sucrose is dissolved in water and poured into dialysis tubing which is closed on both ends making it water tight, if it is then placed in deionised water, what will happen to the tubing.

  1. It will expand since the solution is hypotonic to the solution in the tubing
  2. It will shrivel up since the solution is hypotonic to the solution in the tubing
  3. It will expand since the solution is hypertonic to the solution in the tubing
  4. It will shrivel up since the solution is hypertonic to the solution in the tubing

Question 2)

Which of the following organs all belong to the digestive system.

  1. The lungs, small intestine, large intestine and stomach
  2. The teeth, oesophagus, small intestine, large intestine and 
  3. The bladder, stomach and small intestine
  4. The trachea, gallbladder, liver and large intestine

Question 3)

What is the principle which limits the size a single cellular organism can be

  1. The amount of food around
  2. The SA:V ratio
  3. The diffusion quotient
  4. The concentration of the surrounding environment

Question 4) 

What part of the protein does the substrate bind to when a reaction is being catalysed?

  1. The active site
  2. The enzyme
  3. The complex
  4. The Product

Question 5)

What is the role of the arteries in the circulatory system?

  1. To carry blood to the heart
  2. To carry blood away from the heart
  3. To carry oxygenated blood
  4. To carry deoxygenated blood

Question 6)

Short Answer (55 marks)

Question 21.

Evaluate the use of models in science [6 marks]

Question 22. (3 marks)

Compare and contrast the circulatory system of animals with the transport system of plants.

Question 23. (question 4)

Draw and label an animal cell which contains the following organelles:

  1. Mitochondria (1 mark)
  2. Nucleus (1 mark)
  3. Ribosomes (1 mark)
  4. Golgi apparatus (1 mark)

Question 24. (6 marks)

  1. Outline the body systems and their major role which allow for cellular respiration. [3 marks]
  2. Outline how the SA:V concept allows the above three systems to work more effectively [3 marks]

Question 25. 

During your studies, you performed an experiment which allowed you to determine the effect of an enzyme on the rate of reaction.

  1. Outline your independent, dependent and controlled variables you used in this experiment. (3 marks)
  2. Write a risk assessment for your experiment (2 marks)
  3. Evaluate the experimental procedure you used  (4 marks)

Question 26.

  1. Explain how enzymes work using the lock and key model and why they have their effect on the rate of reaction. (3 mark)
  2. Outline the effect of the following changes to reaction rate
    1. increasing temperature (1 mark)
    2. increasing concentration of the substrate  (1 mark)
    3. Increasing concentration of enzyme (1 mark)

Evaluate the usefulness of the SA:V ratio for explaining biological phenomena. (SA:V)

E.g limits the size a cell can grow

Outline the experimental method and risk assessment you used for the enzyme experiment (6 marks)

Question 26.

  1. Compare and contrast scanning electron microscopes, transmission electron microscopes and light microscopes. ( 6 marks)

Label the two missing organelles (2 marks)

Question 27.

In you diffusion experiment you measured the net flow of water and the effect of concentration gradient on this:

  • What was the role of the dialysis tubing – what was it modelling
  • State a hypothesis
  • You had two controls, what were they?
  • What were the controlled variables?

Question 28.

the experimental method and risk assessment you used for the enzyme experiment (6 marks)

Answers

Question 24) 

A student says

“Plants don’t respire because they can perform photosynthesis”

Evaluate the validity of the students statement [4 marks]

The Student’s statement is invalid.

  • Chloroplasts convert light into glucose
  • Plants do respire
  • Plants are also photosynthesising and respiration during the day

Question 3)

Question 27)

b

Answers.

  1. A
  2. B

21) 

Marking Criteria:

CriteriaMark
Provides an advantage/s of models in scienceE.g communicating ideas effectively, allowing complex systems to be represented1
Provides an example of this advantage1
Provides a diavantage/s of models in scienceE.g communicating ideas effectively, allowing complex systems to be represented1
Provides an example of this disadvantage1
Uses evaluative language1
Evaluates the effectiveness in models1

22)

Sample Answer:

PlantsAnimals
SimBoth are transporting nutrients, water and energy
DiffSource and sink, capillary actionPhloem and xylemThe movement of blood around body is powered by heartArteries, capillaries, veins

Compare and contrast gaseous exchange in plants and mammals [4 mark]

Autotoph – plant

Heterotroph – mamals

SimDiff
PlantsRespiration common to both (O2 being used)Stomata and mouths and noseThey can chose to photosynthesis
AnimalsWe only produce CO2

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

%d bloggers like this: