Biology Unit 3 AQA (Higher) Quiz match the definition with the word. conc. = concentration (yes, I'm lazy) 3.5 / 5 based on 5 ratings ? BiologyGCSEAll boards Created by: heloiseCreated on: 18-05-11 16:45 Tiny air sacs in lungs alveoli 1 of 24 a single, small, finger-like projections found in small intestine villus 2 of 24 A: to prevent wilting. (What is the question?) why do guard cells close the stomata? 3 of 24 A: hot, dry and windy. (what is the question?) in what conditions would a plant need to close its stomata to prevent water loss? 4 of 24 A: the blood is pumped from heart to lungs, then back, then to body and back. (what is the question?) what is a double circulatory system? 5 of 24 A: the left side. (what is the question?) which side of the heart has the biggest muscles? 6 of 24 Oxyhaemoglobin. It is a combination of haemoglobin and oxygen, found in red blood cells 7 of 24 A straw coloured substance that transports CO2, glucose, protein, and urea. Plasma 8 of 24 False. Your capillaries dilate during exercise 9 of 24 True. Aerobic respiration is more efficient than anaerobic respiration. 10 of 24 Ultra-filtration. The process of forcing water and molecules into tubules under pressure. 11 of 24 Oxygen Debt. The amount of oxygen needed to oxidise lactic acid into carbon dioxide and water. 12 of 24 A:Urea. (what is the question?) What substance found in urine could poison a person, if it remained in the blood? 13 of 24 A: Partially permeable membrane. (what is the question?) What separates the blood from dialysis fluid in a dialysis machine? 14 of 24 A: Irradiated. (what is the question?) The bone marrow of the recipient must be WHAT to receive a kidney? 15 of 24 A: Enzymes. (what is the question?) What cause the starch in barley to turn into a sugary solution? 16 of 24 Yeast. A single celled organism with a nucleus, cytoplasm, vacuole, membrane and cell wall. 17 of 24 A:Ethanol. (what is the question?) What is produced when yeast anaerobically respires? 18 of 24 A: an excellent blood supply. (What is the question) what helps maintain a high conc. gradient? 19 of 24 A: Good quality fertilizer. (what is the question?) What is a product of biogas generators? 20 of 24 False. The petri dish must be sealed to prevent any oxygen getting in and harming the bacteria. 21 of 24 A: to prevent pathogens. (what is the question?) Why must schools only incubate cultures below 25*C? 22 of 24 Autoclave. A pressure cooker used to sterilize petri dishes. 23 of 24 The net movement of water particles from a high conc. to a low conc. osmosis 24 of 24
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