Practice C3.1 Integration of body systems with authentic IB Biology exam questions for both SL and HL students. This question bank mirrors Paper 1A, 1B, 2 structure, covering key topics like cell biology, genetics, and ecology. Get instant solutions, detailed explanations, and build exam confidence with questions in the style of IB examiners.
A nerve is made up of:
Which function is most associated with the brain, rather than the spinal cord?
In a pain reflex arc, what type of neuron connects the sensory and motor neuron in the spinal cord?
Where do motor neurons carry impulses?
Which of the following is a direct effect of epinephrine (adrenaline)?
Based on the contraction patterns shown in the image, how does the enteric nervous system ensure directional flow of material in the digestive tract?
What best describes the difference between sensory and motor neurons?
I. Sensory neurons carry signals to the CNS
II. Motor neurons carry signals to muscles
III. Both are part of the central nervous system
What is the function of the cerebellum?
During a panic response, pupils dilate, the heart races, and muscles tense. These effects are coordinated rapidly across several body systems.
What best explains the mechanism coordinating this systemic response?
Peristalsis of the gut is largely unconscious, yet both voluntary and involuntary control are required for digestive coordination.
Which best describes this division of labor?