Frage 1
Frage
The six most common elements present in living organisms are:
Antworten
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Carbon, hydrogen , oxygen, sulphur, phosphorus, chlorine
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Carbon, hydrogen, oxygen, nitrogen, phosphorus, sulphur
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Carbon, hydrogen, oxygen, nitrogen, phosphorus, sodium
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Carbon, hydrogen, oxygen, nitrogen, boron, phosphorus
Frage 2
Antworten
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The way in which living organisms obtain and use food
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The getting rid of waste products of metabolism from the body
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The way in which living organisms react to their environment
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The sum of all the chemical reactions in a living organism
Frage 3
Frage
The five elements present as dissolved salts in living organisms are:
Antworten
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Sodium, potassium, carbon, chlorine, calcium
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Sodium, potassium, chlorine, maganese, calcium
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Sodium, potassium, chlorine, magnesium, calcium
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Sodium, potassium, oxygen, chlorine, calcium
Frage 4
Frage
Trace elements are present in living organisms:
Antworten
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to prevent disease
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to maintain health
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in large amounts
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in small amounts
Frage 5
Frage
Which of the following is NOT a monosaccharide?
Antworten
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Maltose
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Glucose
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Fructose
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Galactose
Frage 6
Frage
Which of the following is NOT a disaccharide?
Antworten
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Maltose
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Fructose
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Sucrose
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Lactose
Frage 7
Frage
Which of the following is NOT a polysaccharide?
Antworten
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Starch
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Cellulose
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Glycogen
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Maltose
Frage 8
Frage
Which of the following is NOT a reducing sugar?
Antworten
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Maltose
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Fructose
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Sucrose
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Glucose
Frage 9
Frage
Which of the following reagents are used to test for reducing sugars?
Antworten
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Biuret's reagent
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Benedict's reagent
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Iodine
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Methylene blue
Frage 10
Frage
Which of the following is another name for starch?
Antworten
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Amylase
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Maltose
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Maltase
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Amylose
Frage 11
Frage
Polysaccharides are composed of long chains of repeating:
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Monosaccharides
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Amino acids
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Lipids
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Nucleic acids
Frage 12
Frage
In the presence of starch, iodine turns:
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Brick-red
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Orange
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Blue-black
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Blue
Frage 13
Frage
Which of the following foods is a good source of starch?
Antworten
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Fish
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Eggs
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Potato
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Chocolate
Frage 14
Frage
Phospholipids are a major component of:
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DNA
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Cell membranes
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Cytosol
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Cell walls
Frage 15
Frage
Peptide bonds are found between:
Antworten
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Monosaccharides
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Glycerol and fatty acids
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Amino acids
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Vitamins
Frage 16
Frage
Which of the following elements is always present in protein?
Antworten
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Phosphorus
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Sulphur
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Nitrogen
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Calcium
Frage 17
Frage
How many common amino acids are there?
Frage 18
Frage
Which of the following vitamins is water soluble?
Frage 19
Frage
Which of the following elements is required for the formation of the middle lamella in plants?
Antworten
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Potassium
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Sodium
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Magnesium
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Calcium
Frage 20
Frage
Which of the following elements is required for the formation of chlorophyll in plants?
Antworten
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Potassium
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Sodium
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Magnesium
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Calcium
Frage 21
Frage
What is the symptoms associated with a deficiency in Vitamin C?
Antworten
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Night-blindness
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Beri-beri
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Scurvy
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Rickets
Frage 22
Frage
What are the symptoms associated with a deficiency of Vitamin D?
Antworten
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Scurvy
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Rickets
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Beri beri
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Night-blindness
Frage 23
Frage
What are the symptoms associated with a deficiency of Vitamin A?
Antworten
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Scurvy
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Beri-beri
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Night-blindness
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Rickets
Frage 24
Frage
What are the symptoms associated with a deficiency of Vitamin K?
Antworten
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Night-blindness
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Inability to blood clot
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Anaemia
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Fatigue
Frage 25
Antworten
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Sum of all the chemical reactions in an organism
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Building up large molecules from small molecules using energy
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Breaking down large molecules into small molecules with the release of energy
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Denaturation of molecules with the release of energy
Frage 26
Antworten
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Sum of all the chemical reactions in an organism
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Building up of large molecules from small molecules using energy
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Breaking down of large molecules into small molecules with the release of energy
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Denaturation of molecules with the release of energy
Frage 27
Frage
Which of the following is NOT an anabolic reaction?
Antworten
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Photosynthesis
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Protein synthesis
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DNA replication
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Respiration
Frage 28
Frage
Which of the following is NOT a catabolic reaction?
Antworten
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Respiration
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Digestion
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Hydrolysis
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Photosynthesis
Frage 29
Frage
Which of the following is the opposite of a hydrolysis reaction?
Antworten
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Photosynthesis reaction
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Condensation reaction
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Respiration reaction
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Digestion reaction
Frage 30
Frage
Which of the following is NOT a function of water in the body?
Antworten
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Acts as a medium in which chemical reactions occur
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Acts as a solvent
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Acts as a source of energy
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Acts as a good retainer of heat