A double pump. Remember: A rteries go A way from the heart; V eins go back to the V entricals/Heart.
Adapted for absorption with a large surface area and thin walls. biology o level 5090 notes
Stimulus → Receptor → Sensory Neuron → Relay Neuron (CNS) → Motor Neuron → Effector → Response. 9. Reproduction and Inheritance A double pump
While you can buy revision guides, the best notes are often free or low-cost, provided they are up-to-date (post-2023 syllabus change). Here are reliable sources: Stimulus → Receptor → Sensory Neuron → Relay
Know the difference between "Describe" (what is happening) and "Explain" (why it is happening).
Identification of organelles in animal, plant, and bacterial cells. Contains DNA and controls cell activities. Mitochondria: Site of aerobic respiration. Ribosomes: Site of protein synthesis. Chloroplasts: Site of photosynthesis (plant cells only). Specialised Cells:
You need to know the journey of food through the Alimentary Canal.