Practise MYP Biology questions on 4.6 Receptors and review the explanations to check your understanding.
Use these questions for topic practice and to find ideas you want to revisit in your notes or lessons.
True or False: In plants, receptors are used to detect gravity to ensure that seedlings grow in the correct orientation.
How do receptors contribute to complex full-body responses, such as shivering when cold?
Transduction involves the conversion of energy. Which of the following best describes the energy conversion performed by a photoreceptor in the retina?
True or False: A stimulus must originate from the external environment for a receptor to detect it.
Why is it essential for a biological system to receive 'accurate information' from a receptor before taking action?
True
False
By converting cold air molecules directly into electrical heat
By generating small amounts of friction within the skin cells
By blocking signals from the brain to conserve the body's energy
By providing the brain with the data necessary to coordinate muscular action
Chemical energy is converted into light energy
Kinetic energy is converted into a chemical signal
Thermal energy is converted into an electrical signal
Light energy is converted into an electrical signal
True
False
To ensure the stimulus is physically moved into the spinal cord
To allow the system to create its own internal stimuli for the brain
To transform the chemical stimulus into a physical nutrient for the cell
To ensure the response (like speeding up or slowing down) happens at the correct time
