KS3 Science biology Quiz on "Food, digestion and Respiration" (based on QCA 8A & 8B)

A healthy diet needs a balance of many things. Which is a main source of energy? [8a-1]
1. carbohydrates
2. protein
3. water
4. fibre
5. vitamins
6. minerals
A healthy diet needs a balance of many things. Which is needed for growth and tissue repairs? [8a-2]
1. carbohydrates
2. protein
3. water
4. fibre
5. fats
6. minerals
A healthy diet needs a balance of many things. Which is the nutrient solvent for the chemical reactions of life? [8a-3]
1. carbohydrates
2. protein
3. water
4. fibre
5. fats
6. minerals
A healthy diet needs a balance of many things. Which is important for the bowel to avoid constipation? [8a-4]
1. carbohydrates
2. protein
3. water
4. fibre
5. fats
6. vitamins
A healthy diet needs a balance of many things. Which is an energy store and organ heat insulator? [8a-5]
1. vitamins
2. protein
3. water
4. fibre
5. fats
6. minerals
A healthy diet needs a balance of many things. Which is needed in small amounts for good health? [8a-6]
1. carbohydrates
2. protein
3. water
4. fibre
5. fats
6. minerals
A healthy diet needs a balance of many things. Which is needed in small amounts for good health? [8a-7]
1. carbohydrates
2. protein
3. water
4. fibre
5. fats
6. vitamins
A healthy diet needs a balance of many things. Bread, potatoes and pasta are ALL good sources of? [8a-8]
1. carbohydrates
2. protein
3. water
4. fibre
5. fats
6. vitamins
A healthy diet needs a balance of many things. Meat, fish and cheese are ALL good sources of? [8a-9]
1. carbohydrates
2. protein
3. water
4. fibre
5. fats
6. minerals
A healthy diet needs a balance of many things. Drinks are the main sources of? [8a-10]
1. carbohydrates
2. protein
3. water
4. fibre
5. fats
6. vitamins
A healthy diet needs a balance of many things. Vegetables and wholemeal bread are ALL good sources of? [8a-11]
1. carbohydrates
2. protein
3. water
4. fibre
5. fats
A healthy diet needs a balance of many things. Butter, olive oil and margarine are ALL good sources of? [8a-12]
1. carbohydrates
2. protein
3. water
4. fibre
5. fats
6. minerals
A healthy diet needs a balance of many things. Fruit, vegetables and table salt are ALL a good sources of? [8a-13]
1. carbohydrates
2. protein
3. water
4. fibre
5. fats
6. minerals
A healthy diet needs a balance of many things. Fruit and vegetables are ALL good sources of? [8a-14]
1. carbohydrates
2. protein
3. water
4. fats
5. vitamins
Small amounts of minerals and vitamins are needed for good health and vitality!
Which of the following dietary needs is mainly obtained from milk and cheese? [8a-15]
1. calcium
2. iron
3. vitamin C
4. sodium
5. fluorine
Small amounts of minerals and vitamins are needed for good health and vitality!
Which of the following dietary needs is mainly obtained from liver and green vegetables? [8a-16]
1. calcium
2. iron
3. vitamin C
4. sodium
5. fluorine
Small amounts of minerals and vitamins are needed for good health and vitality!
Which of the following dietary needs is mainly obtained from vegetables and fruit, but not meat? [8a-17]
1. calcium
2. iron
3. vitamin C
4. sodium
5. fluorine
Small amounts of minerals and vitamins are needed for good health and vitality!
Which of the following dietary needs is mainly obtained from table salt? [8a-18]
1. calcium
2. iron
3. vitamin C
4. sodium
5. fluorine
Small amounts of minerals and vitamins are needed for good health and vitality!
Which of the following dietary needs is mainly obtained from toothpaste? [8a-19]
1. calcium
2. iron
3. vitamin C
4. sodium
5. fluorine
Small amounts of minerals and vitamins are needed for good health and vitality!
Which of the following part of our diet is needed for bone and teeth structure? [8a-20]
1. calcium
2. iron
3. vitamin C
4. sodium
5. potassium
Small amounts of minerals and vitamins are needed for good health and vitality!
Which of the following part of our diet is needed for haemoglobin in red blood cells? [8a-21]
1. calcium
2. iron
3. vitamin C
4. sodium
5. fluorine
Small amounts of minerals and vitamins are needed for good health and vitality!
Which of the following part of our diet is needed for healthy tissue like skin? [8a-22]
1. calcium
2. iron
3. vitamin C
4. sodium
5. fluorine
Small amounts of minerals and vitamins are needed for good health and vitality!
Which of the following part of our diet is needed for nerve function? [8a-23]
1. calcium
2. iron
3. vitamin C
4. sodium
5. fluorine
Small amounts of minerals and vitamins are needed for good health and vitality!
Which of the following part of our diet is needed for hardening teeth enamel? [8a-24]
1. potassium
2. iron
3. vitamin C
4. sodium
5. fluorine
Which describes what happens in the mouth? [8a-25]
1. food mechanically broken into small pieces, enzymes from saliva added
2. food mixed with gastric juices, hydrochloric acid kills most harmful bacteria, creates pH to break down protein
3. alkali neutralises acid and helps break down fats, small food molecules absorbed into bloodstream
4. excess water absorbed into bloodstream, undigested waste converted to faeces
Which describes what happens in the stomach? [8a-26]
1. food mechanically broken into small pieces, enzymes from saliva added
2. food mixed with gastric juices, hydrochloric acid kills most harmful bacteria, creates pH to break down protein
3. alkali neutralises acid and helps break down fats, small food molecules absorbed into bloodstream
4. excess water absorbed into bloodstream, undigested waste converted to faeces
Which describes what happens in the small intestine? [8a-27]
1. food mechanically broken into small pieces, enzymes from saliva added
2. food mixed with gastric juices, hydrochloric acid kills most harmful bacteria, creates pH to break down protein
3. alkali neutralises acid and helps break down fats, small food molecules absorbed into bloodstream
4. excess water absorbed into bloodstream, undigested waste converted to faeces
Which describes what happens in the large intestine? [8a-28]
1. food mechanically broken into small pieces, enzymes from saliva added
2. food mixed with gastric juices, hydrochloric acid kills most harmful bacteria, creates pH to break down protein
3. alkali neutralises acid and helps break down fats, small food molecules absorbed into bloodstream
4. excess water absorbed into bloodstream, undigested waste converted to faeces
Which of the following are large molecules broken down to small molecules by the enzymes in saliva? [8a-29]
1. carbohydrates
2. protein
3. water
4. fibre
5. vitamins
Which of the following are large molecules broken down to small molecules by the enzymes and acid in the stomach? [8a-30]
1. minerals
2. protein
3. water
4. fibre
5. vitamins
Which of the following is the most abundant sort of molecule in the body? [8a-31]
1. carbohydrates
2. protein
3. water
4. fibre
5. fat
Which of the following is NOT digested and NOT absorbed by the small intestine? [8a-32]
1. carbohydrates
2. protein
3. water
4. fibre
5. minerals
Which of the following are small molecules or ions directly absorbed by the small intestine without digestion? [8a-33]
1. fibre
2. protein
3. fat
4. minerals
Which of the following are small molecules directly absorbed by the small intestine without digestion? [8a-34]
1. vitamins
2. fat
3. protein
4. fibre
Which of the following are large molecules broken down by alkali and enzymes to small molecules in the small intestine? [8a-35]
1. vitamins
2. fat
3. minerals
4. fibre
Which of the following are small molecules directly absorbed by the small intestine without digestion? [8a-36]
1. protein
2. fat
3. sugar
4. fibre
5. starch
Which of the following will a marathon runner most likely eat more of, over the few days before a race? [8a-37]
1. carbohydrates
2. protein
3. minerals
4. fibre
Which of the following will a weight lifter most likely eat more of than usual in a training period? [8a-38]
1. fats
2. protein
3. minerals
4. fibre
Which of the following if eaten too much causes a person to become too fat? [8a-39]
1. vitamins
2. protein
3. carbohydrates
4. fibre
Which of the following helps to reduce colon cancer? [8a-40]
1. carbohydrates
2. protein
3. sugars
4. fibre
Which of the following is NOT true about diet and digestion? [8a-41]
1. excess carbohydrate may be converted into protein
2. amino acids from protein cannot be stored in the body and the excess is excreted as urea
3. a constant supply of glucose circulates in the blood
4. food molecules are absorbed into the blood stream through membranes in the small intestine
Which of the following is NOT true about diet and digestion? [8a-42]
1. excess carbohydrate may be converted into fat
2. amino acids from protein can be stored in the body and used when required for growth and repair
3. a constant supply of glucose circulates in the blood
4. food molecules are absorbed into the blood stream through membranes in the small intestine
Which of the following is NOT true about diet and digestion? [8a-43]
1. excess carbohydrate may be converted into fat
2. amino acids from protein cannot be stored in the body and the excess is excreted as urea
3. glucose is stored in the body and released into the blood stream when needed
4. food molecules are absorbed into the blood stream through membranes in the small intestine
Which of the following is NOT true about diet and digestion? [8a-44]
1. excess carbohydrate may be converted into fat
2. amino acids from protein cannot be stored in the body and the excess is excreted as urea
3. a constant supply of glucose circulates in the blood
4. food molecules are absorbed into the blood stream through membranes in the stomach
Which of the following is NOT true about diet and digestion? [8a-45]
1. excess glucose is converted by the liver into water and carbon dioxide
2. eating vegetable oils rather than animal fats can reduce heart disease
3. digestion means breaking down large food molecules into small molecules which can be absorbed into the bloodstream
4. sugars, vitamins and minerals are small enough molecules to be absorbed directly into the bloodstream
5. protein, carbohydrates and fat molecules are too large to be directly absorbed into the bloodstream
Which of the following is NOT true about diet and digestion? [8a-46]
1. excess glucose is converted by the liver into glycogen which acts as a store of energy
2. eating animal fats rather than vegetable oils can reduce heart disease
3. digestion means breaking down large food molecules into small molecules which can be absorbed into the bloodstream
4. sugars, vitamins and minerals are small enough molecules to be absorbed directly into the bloodstream
5. protein, carbohydrates and fat molecules are too large to be directly absorbed into the bloodstream
Which of the following is NOT true about diet and digestion? [8a-47]
1. excess glucose is converted by the liver into glycogen which acts as a store of energy
2. eating vegetable oils rather than animal fats can reduce heart disease
3. digestion means combining small food molecules into larger molecules which can be used for growth and tissue repair
4. sugars, vitamins and minerals are small enough molecules to be absorbed directly into the bloodstream
5. protein, carbohydrates and fat molecules are too large to be directly absorbed into the bloodstream
Which of the following is NOT true about diet and digestion? [8a-48]
1. excess glucose is converted by the liver into glycogen which acts as a store of energy
2. eating vegetable oils rather than animal fats can reduce heart disease
3. digestion means breaking down large food molecules into small molecules which can be absorbed into the bloodstream
4. sugars, vitamins and mineral molecules are too large to be absorbed directly into the bloodstream
5. protein, carbohydrates and fat are large molecules
Which of the following is NOT true about diet and digestion? [8a-49]
1. excess glucose is converted by the liver into glycogen which acts as a store of energy
2. eating vegetable oils rather than animal fats can reduce heart disease
3. digestion means breaking down large food molecules into small molecules which can be absorbed into the bloodstream
4. sugars, vitamins and minerals are small enough molecules to be absorbed directly into the bloodstream
5. protein, carbohydrates and fat can be slowly absorbed into the bloodstream without being broken down into smaller molecules
Which part of the digestive system is the mouth? [8a-50]
1. part T
2. part U
3. part W
4. part X
5. part Y
Which part of the digestive system is the gullet? [8a-51]
1. part T
2. part U
3. part W
4. part X
5. part Y
Which part of the digestive system is the stomach? [8a-52]
1. part T
2. part U
3. part W
4. part X
5. part Y
Which part of the digestive system is the small intestine? [8a-53]
1. part T
2. part U
3. part W
4. part X
5. part Y
Which part of the digestive system is the large intestine? [8a-5]
1. part T
2. part U
3. part W
4. part X
5. part Y
What happens in part T of the digestion system? [8a-55]
1. food is mechanically broken into small pieces and enzymes from saliva added
2. food mixed with gastric juices, hydrochloric acid kills most harmful bacteria, creates pH to break down protein
3. alkali neutralises acid and helps break down fats, small food molecules absorbed into bloodstream
4. excess water absorbed into bloodstream, undigested waste converted to faeces
What happens in part W of the digestion system? [8a-56]
1. food is mechanically broken into small pieces and enzymes from saliva added
2. food mixed with gastric juices, hydrochloric acid kills most harmful bacteria, creates pH to break down protein
3. alkali neutralises acid and helps break down fats, small food molecules absorbed into bloodstream
4. excess water absorbed into bloodstream, undigested waste converted to faeces
What happens in part X of the digestion system? [8a-57]
1. food is mechanically broken into small pieces and enzymes from saliva added
2. food mixed with gastric juices, hydrochloric acid kills most harmful bacteria, creates pH to break down protein
3. alkali neutralises acid and helps break down fats, small food molecules absorbed into bloodstream
4. excess water absorbed into bloodstream, undigested waste converted to faeces
What happens in part Y of the digestion system? [8a-58]
1. food is mechanically broken into small pieces and enzymes from saliva added
2. food mixed with gastric juices, hydrochloric acid kills most harmful bacteria, creates pH to break down protein
3. alkali neutralises acid and helps break down fats, small food molecules absorbed into bloodstream
4. excess water absorbed into bloodstream, undigested waste converted to faeces
Respiration equation: __(1)__ + __(2)__ __(3)__ + __(4)__
(1) is a soluble solid that might be described as the 'fuel'.
(2) is a gas breathed in from air.
(3) is a gas breathed out from the lungs.
(4) is a colourless liquid.
What is the chemical identity of (1)? [8b-1]
1. glucose
2. oxygen
3. carbon dioxide
4. water
Respiration equation: __(1)__ + __(2)__ __(3)__ + __(4)__
(1) is a soluble solid that might be described as the 'fuel'.
(2) is a gas breathed in from air.
(3) is a gas breathed out from the lungs.
(4) is a colourless liquid.
What is the chemical identity of (2)? [8b-2]
1. glucose
2. oxygen
3. carbon dioxide
4. water
Respiration equation: __(1)__ + __(2)__ __(3)__ + __(4)__
(1) is a soluble solid that might be described as the 'fuel'.
(2) is a gas breathed in from air.
(3) is a gas breathed out from the lungs.
(4) is a colourless liquid.
What is the chemical identity of (3)? [8b-3]
1. glucose
2. oxygen
3. carbon dioxide
4. water
Respiration equation: __(1)__ + __(2)__ __(3)__ + __(4)__
(1) is a soluble solid that might be described as the 'fuel'.
(2) is a gas breathed in from air.
(3) is a gas breathed out from the lungs.
(4) is a colourless liquid.
What is the chemical identity of (4)? [8b-4]
1. glucose
2. oxygen
3. carbon dioxide
4. water
Respiration equation: __(1)__ + __(2)__ __(3)__ + __(4)__
(1) is a soluble solid, when heated with Benedicts solution a red-brown colour is formed.
(2) is a gas, when pure, relights a glowing splint.
(3) is a gas that bubbled into limewater turns it cloudy.
(4) is a colourless liquid boiling at 100^oC.
What is the chemical identity of (1)? [8b-5]
1. glucose
2. oxygen
3. carbon dioxide
4. water
Respiration equation: __(1)__ + __(2)__ __(3)__ + __(4)__
(1) is a soluble solid, when heated with Benedicts solution a red-brown colour is formed.
(2) is a gas, when pure, relights a glowing splint.
(3) is a gas that bubbled into limewater turns it cloudy.
(4) is a colourless liquid boiling at 100^oC.
What is the chemical identity of (2)? [8b-6]
1. glucose
2. oxygen
3. carbon dioxide
4. water
Respiration equation: __(1)__ + __(2)__ __(3)__ + __(4)__
(1) is a soluble solid, when heated with Benedicts solution a red-brown colour is formed.
(2) is a gas, when pure, relights a glowing splint.
(3) is a gas that bubbled into limewater turns it cloudy.
(4) is a colourless liquid boiling at 100^oC.
What is the chemical identity of (3)? [8b-7]
1. glucose
2. oxygen
3. carbon dioxide
4. water
Respiration equation: __(1)__ + __(2)__ __(3)__ + __(4)__
(1) is a soluble solid, when heated with Benedicts solution a red-brown colour is formed.
(2) is a gas, when pure, relights a glowing splint.
(3) is a gas that bubbled into limewater turns it cloudy.
(4) is a colourless liquid boiling at 100^oC.
What is the chemical identity of (4)? [8b-8]
1. glucose
2. oxygen
3. carbon dioxide
4. water
Which of the following matches the word digestion? [8b-9]
1. 'making small glucose molecules from big starch molecules'
2. 'glucose molecules slowly absorbed into the bloodstream through a membrane'
3. 'oxygen and glucose are rapidly moved around in the bloodstream'
4. 'glucose reacts with oxygen to release energy'
Which of the following matches the word diffusion? [8b-10]
1. 'making small glucose molecules from big starch molecules'
2. 'glucose molecules absorbed into the bloodstream through a membrane'
3. 'oxygen and glucose are moved around in the bloodstream'
4. 'glucose reacts with oxygen to release energy'
Which of the following matches the word transportation? [8b-11]
1. 'making small glucose molecules from big starch molecules'
2. 'glucose molecules absorbed into the bloodstream through a membrane'
3. 'oxygen and glucose are moved around in the bloodstream'
4. 'glucose reacts with oxygen to release energy'
Which of the following matches the word respiration? [8b-12]
1. 'making small glucose molecules from big starch molecules'
2. 'glucose molecules absorbed into the bloodstream through a membrane'
3. 'oxygen and glucose are moved around in the bloodstream'
4. 'glucose reacts with oxygen to release energy'
A manual roadworker, an office worker, a marathon runner in training and an injured person all have different daily energy requirements in kJ/day. Respiration supplies the energy needs of them. Which of the following is the most likely energy requirement of the road gang worker? [8b-13]
1. 19000 kJ/day
2. 13000 kJ/day
3. 22000 kJ/day
4. 10000 kJ/day
A manual roadworker, an office worker, a marathon runner in training and an injured person all have different daily energy requirements in kJ/day. Respiration supplies the energy needs of them. Which of the following is the most likely energy requirement of the office worker? [8b-14]
1. 19000 kJ/day
2. 13000 kJ/day
3. 22000 kJ/day
4. 10000 kJ/day
A manual roadworker, an office worker, a marathon runner in training and an injured person all have different daily energy requirements in kJ/day. Respiration supplies the energy needs of them. Which of the following is the most likely energy requirement of the marathon runner? [8b-15]
1. 19000 kJ/day
2. 13000 kJ/day
3. 22000 kJ/day
4. 10000 kJ/day
A manual roadworker, an office worker, a marathon runner in training and an injured person all have different daily energy requirements in kJ/day. Respiration supplies the energy needs of them. Which of the following is the most likely energy requirement of the injured person? [8b-16]
1. 19000 kJ/day
2. 13000 kJ/day
3. 22000 kJ/day
4. 10000 kJ/day
Which matches the pair of lungs? [8b-17]
1. W
2. Y
3. Z
4. U
5. V
Which matches the ribs? [8b-18]
1. W
2. Y
3. Z
4. U
5. V
Which matches the trachea (windpipe)? [8b-19]
1. W
2. Y
3. Z
4. U
5. V
Which matches the bronchus? [8b-20]
1. W
2. Y
3. Z
4. U
5. V
Which matches the alveoli? [8b-21]
1. W
2. Y
3. Z
4. U
5. V
[8b-22] Which statement is FALSE about respiration?
1. both carbon dioxide and oxygen both are needed for respiration
2. both water and carbon dioxide are both waste products from respiration
3. in the lungs, oxygen from air passes from the alveoli to tiny blood vessels
4. in the lungs, carbon dioxide passes from tiny blood vessels into the alveoli
[8b-23] Which statement is FALSE about respiration?
1. both oxygen and glucose are needed for respiration
2. both water and carbon monoxide are waste products from respiration
3. in the lungs, oxygen from air passes from the alveoli to tiny blood vessels
4. in the lungs, carbon dioxide passes from tiny blood vessels into the alveoli
[8b-24] Which statement is FALSE about respiration?
1. both oxygen and glucose are needed for respiration
2. both water and carbon dioxide are waste products from respiration
3. in the lungs, oxygen from air passes from tiny blood vessels to the alveoli
4. carbon dioxide produced in respiration is transported by blood flow to the lungs
[8b-25] Which statement is FALSE about respiration?
1. both oxygen and glucose are needed for respiration
2. both water and carbon dioxide are waste products from respiration
3. oxygen from air is transported by blood flow from the lungs to all cells
4. in the lungs, carbon dioxide passes from the alveoli to tiny blood vessels
[8b-26] Which statement is FALSE about respiration?
1. gases easily pass across the wall of the alveolus because it mainly consists of water
2. gas exchange in the lungs is very efficient because of the large surface area of the alveoli
3. dust particles can damage the lung by irritating and covering the inner alveoli surface
4. a face mask filters out dust particles that can irritate or damage the lungs
5. emphysema victims have difficulty breathing because the damaged alveoli have less surface area
[8b-27] Which statement is FALSE about respiration?
1. gases easily pass across the wall of the alveolus because it is thin
2. gas exchange in the lungs is very efficient because of the small surface area of the alveoli
3. dust particles can damage the lung by irritating and covering the inner alveoli surface
4. a face mask filters out dust particles that can irritate or damage the lungs
5. emphysema victims have difficulty breathing because the damaged alveoli have less surface area
[8b-28] Which statement is FALSE about respiration?
1. gases easily pass across the wall of the alveolus because it is thin
2. gas exchange in the lungs is very efficient because of the large surface area of the alveoli
3. dust particles can damage the lung by covering the surface of the blood vessels next to the alveoli
4. a face mask filters out dust particles that can irritate or damage the lungs
5. emphysema victims have difficulty breathing because the damaged alveoli have less surface area
[8b-29] Which statement is FALSE about respiration?
1. gases easily pass across the wall of the alveolus because it is thin
2. gas exchange in the lungs is very efficient because of the large surface area of the alveoli
3. dust particles can damage the lung by irritating and covering the inner alveoli surface
4. a face mask distils out dust particles that can irritate or damage the lungs
5. emphysema victims have difficulty breathing because the damaged alveoli have less surface area
[8b-30] Which statement is FALSE about respiration?
1. gases easily pass across the wall of the alveolus because it is thin
2. gas exchange in the lungs is very efficient because of the large surface area of the alveoli
3. dust particles can damage the lung by irritating and covering the inner alveoli surface
4. a face mask filters out dust particles that can irritate or damage the lungs
5. emphysema victims have difficulty breathing because the damaged alveoli have no tiny blood vessels connected to them
Which statement is FALSE when comparing respiration and burning a fuel? [8b-31]
1. respiration is fast and not controlled, burning is rapid and controlled
2. both respiration and burning produce waste water and carbon dioxide
3. both respiration and burning use up oxygen
4. both respiration and burning release heat energy, but only burning gives out light too
Which statement is FALSE when comparing respiration and burning a fuel? [8b-32]
1. respiration is slow and controlled, burning is rapid and not controlled
2. only burning produces waste water
3. both respiration and burning use up oxygen
4. both respiration and burning release heat energy, but only burning gives out light too
Which statement is FALSE when comparing respiration and burning a fuel? [8b-33]
1. respiration is slow and controlled, burning is rapid and not controlled
2. both respiration and burning produce waste water and carbon dioxide
3. only respiration uses up oxygen from the air
4. both respiration and burning release heat energy, but only burning gives out light too
Which statement is FALSE when comparing respiration and burning a fuel? [8b-34]
1. respiration is slow and controlled, burning is rapid and not controlled
2. both respiration and burning produce waste water and carbon dioxide
3. both respiration and burning use up oxygen
4. both respiration and burning only release energy as heat
Below is a list of molecules involved in energy production from digestion and respiration. Which is the formula for carbon dioxide? [8b-35]
1. CO₂
2. O₂
3. H₂O
4. C₆H₁₂O₆
5. (C₆H₁₀O₅)₁₀₀₀
Below is a list of molecules involved in energy production from digestion and respiration. Which is the formula for oxygen? [8b-36]
1. CO₂
2. O₂
3. H₂O
4. C₆H₁₂O₆
5. (C₆H₁₀O₅)₁₀₀₀
Below is a list of molecules involved in energy production from digestion and respiration. Which is the formula for water? [8b-37]
1. CO₂
2. O₂
3. H₂O
4. C₆H₁₂O₆
5. (C₆H₁₀O₅)₁₀₀₀
Below is a list of molecules involved in energy production from digestion and respiration. Which is the formula for glucose? [8b-38]
1. CO₂
2. O₂
3. H₂O
4. C₆H₁₂O₆
5. (C₆H₁₀O₅)₁₀₀₀
Below is a list of molecules involved in energy production from digestion and respiration. Which is the formula for starch? [8b-39]
1. CO₂
2. O₂
3. H₂O
4. C₆H₁₂O₆
5. (C₆H₁₀O₅)₁₀₀₀
The gases from (i) air breathed in, (ii) air breathed out, (iii) just above a lit bunsen burner flame and (iv) the gases left over after burning a candle inside an up-turned beaker where analysed. From the results quoted below, which analysis is most likely to be from the bunsen flame? [8b-40]
1. 74% nitrogen, 1% oxygen, 11% carbon dioxide, 14% water vapour
2. 78% nitrogen, 21% oxygen, 0.04% carbon dioxide, 1% water vapour
3. 76% nitrogen, 15% oxygen, 4% carbon dioxide, 5% water vapour
4. 75% nitrogen, 10% oxygen, 8% carbon dioxide, 7% water vapour
The gases from (i) air breathed in, (ii) air breathed out, (iii) just above a lit bunsen burner flame and (iv) the gases left over after burning a candle inside an up-turned beaker where analysed. From the results quoted below, which analysis is most likely to be from inhaled 'natural' air? [8b-41]
1. 74% nitrogen, 1% oxygen, 11% carbon dioxide, 14% water vapour
2. 78% nitrogen, 21% oxygen, 0.04% carbon dioxide, 1% water vapour
3. 76% nitrogen, 15% oxygen, 4% carbon dioxide, 5% water vapour
4. 75% nitrogen, 10% oxygen, 8% carbon dioxide, 7% water vapour
The gases from (i) air breathed in, (ii) air breathed out, (iii) just above a lit bunsen burner flame and (iv) the gases left over after burning a candle inside an up-turned beaker where analysed. From the results quoted below, which analysis is most likely to be from exhaled air (breathed out)? [8b-42]
1. 74% nitrogen, 1% oxygen, 11% carbon dioxide, 14% water vapour
2. 78% nitrogen, 21% oxygen, 0.04% carbon dioxide, 1% water vapour
3. 76% nitrogen, 15% oxygen, 4% carbon dioxide, 5% water vapour
4. 75% nitrogen, 10% oxygen, 8% carbon dioxide, 7% water vapour
The gases from (i) air breathed in, (ii) air breathed out, (iii) just above a lit bunsen burner flame and (iv) the gases left over after burning a candle inside an up-turned beaker where analysed. From the results quoted below, which analysis is most likely to be from the residual air from candle burning? [8b-43]
1. 74% nitrogen, 1% oxygen, 11% carbon dioxide, 14% water vapour
2. 78% nitrogen, 21% oxygen, 0.04% carbon dioxide, 1% water vapour
3. 76% nitrogen, 15% oxygen, 4% carbon dioxide, 5% water vapour
4. 75% nitrogen, 10% oxygen, 8% carbon dioxide, 7% water vapour
Which statement is FALSE concerning diet and respiration? [8b-44]
1. there is no chemical energy stored in fibre
2. the more physically active you are, the more quickly your energy reserves are reduced
3. glucose provides energy quicker than starch because glucose can be directly absorbed into the blood stream
4. starch provides energy slower than glucose because starch has to be digested before it is absorbed into the blood stream
Which statement is FALSE concerning diet and respiration? [8b-4]
1. chemical energy stored in fibre cannot be used because the fibre cannot be digested
2. the more physically active you are, the more quickly your energy reserves are increased
3. glucose provides energy quicker than starch because glucose can be directly absorbed into the blood stream
4. starch provides energy slower than glucose because starch has to be digested before it is absorbed into the blood stream
Which statement is FALSE concerning diet and respiration? [8b-46]
1. chemical energy stored in fibre cannot be used because the fibre cannot be digested
2. the more physically active you are, the more quickly your energy reserves are reduced
3. glucose provides energy much quicker than starch because glucose has a much higher energy content
4. starch provides energy slower than glucose because starch has to be digested before it is absorbed into the blood stream
Which statement is FALSE concerning diet and respiration? [8b-47]
1. chemical energy stored in fibre cannot be used because the fibre cannot be digested
2. the more physically active you are, the more quickly your energy reserves are reduced
3. glucose provides energy quicker than starch because glucose can be directly absorbed into the blood stream
4. starch provides energy slower than glucose because starch has to be stored before it is absorbed into the blood stream

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KS3 Science biology Quiz on "Food, digestion and Respiration" (based on QCA 8A & 8B)

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