B2

What is a group of cells with a similar structure and function?
Tissues
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What are aggregations of tissues performing specific functions called?
Organs
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Which model is used to explain enzyme activity?
Lock & key
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Where is amylase produced?
Salivary glands & pancreas
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Where is lipase produced?
Pancreas & small intestine
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Where is protease produced?
Stomach, Pancreas & small intestine
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What does amylase do?
Break down starch into sugars
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What does protease do?
Break down proteins into amino acids
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What does lipids do?
Break down lipids into fatty acids & glycerol
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Where is bile produced and stored?
Produced in liver, stored in gall bladder
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What are the 2 functions of bile?
Neutralise stomach acid and emulsifies fats so lipase can work efficiently
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What is used to test for sugars?
Benedict’s test
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What is used to test for starch?
Iodine
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What is used to test for protein?
Biuret reagent
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Why is the heart described as a double pump?
Right side pumps to the lungs for oxygen, left side pumps around the rest of the body
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Which blood vessel brings deoxygenated blood from the body back to the heart?
Vena cava
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Which blood vessel transports blood from the heart to the lungs to pick up oxygen?
Pulmonary artery
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Which blood vessel transports blood from the lungs to the heart?
Pulmonary vein
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Which blood vessel transports oxygenated blood from the heart to the rest of the body?
Aorta
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Where does gas exchange take place in animals?
Aleveoli
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What is the natural resting heart rate controlled by?
Pacemaker cells in right atrium
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Which device can correct irregularities in the heart rate?
Artificial pacemaker
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What are the 3 types of blood vessels?
Capillaries, veins, arteries
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Which blood vessels have the thinnest walls?
Cappilaries
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Which blood vessels contain valves?
Veins
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Which blood vessels have the narrowest lumen?
Arteries
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Which blood vessels carry oxygenated blood?
Arteries
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Which blood vessels carry deoxygenated blood?
Viens
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What 4 main substances does blood consist of?
Plasma, platelets, WBC, RBC
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Which 3 main ways can cardiovascular disease be treated?
Drugs, mechanical devices or transplant
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What are stents used for?
Keep coronary arteries open
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What do statins do?
Reduce blood cholesterol
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What can faulty heart valves be replaced with?
Biological or mechanical valves
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What may happen to heart valves if they become faulty?
Not open properly, or develop a leak
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What can be used whilst waiting for a heart transplant or to allow the heart to rest as an aid to recovery?
Artificial heart
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What is health?
The state of physical and mental well-being
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What are risk factors?
Factors that lead to an increased rate of disease
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What can a poor diet, lack of exercise and smoking lead to?
Cardiovascular disease
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What can obesity lead to?
Type 2 diabetes
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What organs are affected by alcohol?
Brain and liver
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What risk factor can lead to lung cancer and lung disease?
Smoking
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What can carcinogens, including ionising radiation, lead to?
Cancer
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What is cancer?
Changes in cells that lead to uncontrolled growth & division
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What type of tumour is contained in one area and do not spread?
Benign
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What type of tumour can invade neighbouring tissues and other parts of the body to form secondary tumours?
Malignant
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Which type of tumours are cancers?
Malignant
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Which leaf cell layer contains the most chloroplasts?
Palisade mesophyll
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In which leaf cell layer does gaseous exchange occur?
Spongy mesophyll
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Other cards in this set

Card 2

Front

What are aggregations of tissues performing specific functions called?

Back

Organs

Card 3

Front

Which model is used to explain enzyme activity?

Back

Preview of the front of card 3

Card 4

Front

Where is amylase produced?

Back

Preview of the front of card 4

Card 5

Front

Where is lipase produced?

Back

Preview of the front of card 5
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