Year 11 Biology Exam Questions: Patterns in Nature
Assess your depth of knowledge and understanding for the Year 11 Biology module ‘Patterns in Nature’. Work through these Patterns in Nature exam questions below.
You can refer to the Glossary of Key Words for the meaning of any verbs in the questions.
Detailed answers are provided at the bottom of this blog post
What are the three tenets of cell theory developed by Schleiden and Schwann?
In which cell organelle does protein synthesis occur?
List 3 things that plant cells have that are absent from animal cells.
What is the purpose of stains in microscope work?
What colour does iodine turn in the presence of starch?
Which elements make up amino acids?
What is biuret reagent used for?
Are diffusion and osmosis examples of active or passive transport?
Compare the difference between diffusion and osmosis?
Why is surface area to volume ratio important for cells?
What is the function of the lymphatic system (lymph nodes, thymus and spleen)?
Which organ system transports nutrients around the body?
What will happen to a plant cell in a hypertonic solution?
What is the purpose of stomata in plants?
Give an example of a sink cell in a plant.
What is the benefit of a four chambered heart?
Compare the teeth of herbivores and carnivores.
What is the advantage of the counter-current exchange mechanism in fish gills?
What happens during anaphase of mitosis?
When is a membrane described as ‘semi-permeable’?
- (i) All organisms are made up of one or more cells.
(ii) Cells are the fundamental unit of life.
(iii) All cells come from pre-existing cells.
- (i) Rigid cell wall
(iii) Large vacuole
- Different stains highlight different parts of the cell.
- Dark purple.
- C, H, O, N
- To test for the presence of proteins.
- Diffusion is the movement of particles from high concentration to low concentration. Osmosis is the movement of water across a semipermeable membrane from a region of low solute concentration to high solute concentration.
- A low surface area to volume ratio will slow the rate of diffusion of substances into and out of the cell. This will affect the exchange of gases, waste and nutrients.
- To protect the body against infections by pathogens.
- The circulatory system.
- It will be plasmolyzed.
- They allow gas exchange. Stomata can close to reduce the amount of water loss by transpiration.
- Root cell.
- Herbivores have prominent incisors, no canine teeth and large molars for breaking down vegetation. Carnivores have sharp pointed incisors and prominent canine teeth for gripping and tearing. Their molars are strong and sharp for crushing bones.
- Oxygenated and deoxygenated blood is kept separate.
- It maintains a concentration gradient and enables the efficient transfer of oxygen from water into the blood.
- The sister chromatids separate and move towards the opposite poles of the cell.
- When certain substances are able to pass through the membrane, but others are not.
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