Unit 1 : The body and its diseases 0.0 / 5 ? Human BiologyThe Body and its DiseasesASAQA Created by: NatashaLittlewood0810Created on: 16-05-14 17:58 9103264185 Across 1. Drugs that lower blood pressure by reducing the strength of the heartbeat. (12) 3. small fluid-filled sac covered in membrane. Transport substances between organelles and plasma membrane (8) 4. Group of fluid filled, flattened sacs. Processes and packages new lipids and proteins (5, 4) 5. Initial symptom-minor infection of mucous membrane. Then no. of immune system cells decrease, more susceptible to more serious infections like chronic diarrhoea and TB. Lastly, low no. of immune system cells and suffer serious infections which kill (4) 6. Need a constant supply to replace water lost through urinating, breathing and sweating (5) Down 2. Atheroma plaque can rupture the endothelium, damaging artery wall, platelets and fibrin accumulate here and form a blood clot. This could cause a complete blockage of the artery or get dislodged and block a vessel elsewhere. (10) 3. Some gut species produce Vitamin K, needed by liver to synthesise thrombin, an enzyme needed for blood clotting. (7, 1) 8. Small organelle free to float in cytoplasm or on rough ER. Site where proteins are made. (9) 9. Iron - Haemoglobin, Calcium - Blood formation (7, 5) 10. Core-contains genetic material (RNA) and some proteins like enzyme reverse transcriptase. Outer coating-Protein called Capsid. Extra outer layer-Envelope. Made of membrane stolen from cell membrane of previous host. (3)
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