digestive system revision sheet unsure questions

Question 1

list the 6 groups of nutrients that humans need

Answer 1

• proteins
• carbohydrates
• lipids
• vitamins
• minerals
• fibre

Question 2

how are proteins obtained in our diet and what are they used for

Answer 2

• obtained from meat, fish and eggs

- used to build and repair muscles

Question 3

how are carbohydrates obtained in our diet and what are they used for

Answer 3

• obtained from rice, potatoes and pasta

- used as the body’s primary energy source

Question 4

how are lipids obtained in our diet and what are they used for

Answer 4

• obtained from animal fat, olive oil and butter

- used for absorbing vitamins

Question 5

how are vitamins obtained in our diet and what are they used for

Answer 5

• obtaining from plants or animals

- used for enhancing the immune system

Question 6

how are minerals obtained in our diet and what are they used for

Answer 6

• obtained from fruit and vegetables

- used for keeping bones, muscles, heart and brain working properly

Question 7

how are nutrients absorbed from the large intestine into the bloodstream

Answer 7

Through osmosis vitamins, minerals and water are absorbed into the blood capillaries under the mucosa layer

Question 8

what is defecation

Answer 8

occurs when the muscle around the anus relaxes allowing faeces to be passed out