Topic B2-Circulatory Sysytem, Digestion System, Cancer, Plant Tissues Flashcards
What is a group of cells with a similar function and structure?
Tissue
What are aggregations of tissues performing specific functions called?
Organs
Which model is used to explain enzyme activity?
Lock and Key
🔒🔑
Where is amylase produced?
Salivary glands
Pancreas
Where is protease produced?
Stomach
Pancreas
Small intestine
What does amylase do?
Breaks down starch into sugars
(amalyaSe = Starch»_space; Sugars)
What does protease do?
Breaks down proteins into amino acids
(PROtease ~ PROteins»_space; amino acids)
What to lipases do?
Break down lipids into fatty acids and glycerol
(LIPases ~ LIPids)
Where is bile produced and stored?
• Produced - liver
• Stored - gall bladder
What are the functions of bile?
- neutralise stomach acid
- emulsified fats so lipids can work efficiently
Test for sugars?
Benedicts Test
Blue to brick red upon heating
Test for starch?
Iodine
Orange/ brown»_space; blue/black
Test for protein
Bieuret reagent
Why is heart described as double lump?
- right side pumps to the lungs (for oxygen)
- left side pumps around rest of body
Which blood vessel brings deoxygenated blood from the body back to the heart?
Vena cava
Which blood vessel transports blood from the heart to the lungs to pick up oxygen?
Pulmonary artery
Which blood vessel transports blood from the lungs to the heart
Pulmonary vein
Which blood cell transports oxygenated blood from the heart to the rest of the body?
Aorta 🫀
Where is lipase produced?
Pancreas
Small intestines
Where does gas exchange take place in animals?
Alveoli
What is the natural resting heart rate controlled by?
Pacemaker cells located in the right atrium
Which device can correct irregularlarities in the heart rate
Artificial pacemaker