B3 - Organisation and Digestion System

Question 1

what is digestion

Answer 1

1. large molecues are broken down into smalller molecues
2. so they can be absorbed
3. into the body

Question 2

what organs are in the digestive system

Answer 2

1. mouth
2. stomach
3. large intestine
4. salivary gland
5. pancreas
6. anus
7. liver
8. rectum
9. small intestine
10. oesphagus

Question 3

what is the function of the mouth in the digestive system

Answer 3

moistens food so it moves more easily through your esophagus into your stomach

Question 4

what is the function of the stomach in the digestive system

Answer 4

holds the food and mixes it with acid and enzymes that continue to break the food down into a liquid or paste.

Question 5

what is the function of the large intestine in the digestive system

Answer 5

absorb water and salts from the material that has not been digested as food, and get rid of any waste products left over.

Question 6

what is the function of the salviary gland in the digestive system

Answer 6

makes saliva

Question 7

what is the function of the pancreas in the digestive system

Answer 7

creates enzymes which break down sugars, fats and starches

Question 8

what is the function of the anus in the digestive system

Answer 8

the opening at the end of the digestive tract where feces are eliminates from the body

Question 9

what is the function of the liver in the digestive system

Answer 9

Produces bile and secretes it to the gall bladder for storage.

Question 10

what is the function of the rectum in the digestive system

Answer 10

the lower part of the large intestine where feces are stored

Question 11

what is the function of the small intestine in the digestive system

Answer 11

The small intestine is the region where digested food is absorbed

Question 12

what is the function is eosphagus in the digestive system

Answer 12

Muscular tube which moves ingested food to the stomach.

Question 13

put organella, organ system, tisue, organ, organism and cell in order from smallest to biggest

Answer 13

cell, organelle, tissue, organ, system and organism

Question 14

what is a tissue

Answer 14

a group of cells of the same type that work together to preform a function

Question 15

what are three types of tissues

Answer 15

• Muscular tissues which contract
• Glandular tissue which secretes substances
• Epithelial tissue which lines the inside and outside of organs for protection

Question 16

what is an organ

Answer 16

a group of different tissues that work together to preform a function

Question 17

how is the stomach adapted for its function

Answer 17

• glandular tissue to release stomach acid and enzymes
• muscular tissue to contract and churn food

Question 18

what are five organ systems you can name

Answer 18

1. digestive system
2. reproductive system
3. circulartory system
4. nervous system
5. muscular system

Question 19

what is the lock and key method

Answer 19

1. The complementary substrate fits into the active site of the enzyme
2. Only a specific shape substrate can fit
3. An enzyme substrate complex is formed
4. The enzyme breaks down the substrate to smaller pieces
5. The products are released
6. The enzyme can be reused

Question 20

what are the seven food groups which are essential for a balanced human diet

Answer 20

1. carbohydrates
2. protein
3. water
4. vitamins
5. minerals
6. fats
7. fibre

Question 21

Why are complex carbs better for a marathon and simple sugars better for a sprint?

Answer 21

1. Complex carbs contain multiple sugar units
2. Takes longer for enzymes (amylase) to break down
3. Therefore longer to absorb into blood
4. Energy is released through respiration an a more controlled way and for longer
5. Simple carbs contain one sugar unit
6. Short time to absorb
7. Energy released by respiration very fast but for short time

Question 22

food tests: when testing iodine solution what colour does the sample turn when starch is pressent

Answer 22

not pressent: orange/brown
pressent: blue/black

Question 23

food tests: when testing Benedics tests what colour does the sample turn when glucose is pressent

Answer 23

not pressent: blue/green/yellow
pressent: red

Question 24

food tests: when testing Biuret test what colour does the sample turn when proteins is pressent

Answer 24

not pressent: light blue
pressent: purple

Question 25

food tests: when testing ethanol what colour does the sample turn when lipids are pressent

Answer 25

not pressent: clear
pressent: milky white

Question 26

what are enzymes and what do they do

Answer 26

they are proteins that speed up metabolism or the chemical reactions in our body