W. McConnell 2004 Kinross High School ANIMAL SURVIVAL (a) The Need For Food

W. McConnell 2004 Kinross High School

ANIMAL SURVIVAL

(a) The Need For Food


ANIMAL SURVIVAL



ANIMAL SURVIVAL



1. What are the 3 main food groups?

• Carbohydrate

• Fat

• Protein


2. Name the simplest form of each food group.

• Carbohydrate - ?

• Fat - ?

• Protein - ?

glucose

Fatty acids + glycerol

amino acids


3. Which elements do each food group contain?

Carbohydrate - ?

Fat - ?

Protein - ?

Carbon, hydrogen, oxygen.

Carbon, hydrogen, oxygen.

Carbon, hydrogen, oxygen, nitrogen.


4.

Digestion is the process of breaking down

……… ……… particles into ………

……… particles, so that they can be

………… through the gut wall into the

………

large insoluble

soluble

small

absorbedblood


5. Name the reagent used to test for:

• starch - ?

• glucose - ?

iodinebenedicts reagent


6. What is the test for:

• starch - ?

• glucose - ?

Add iodine to the substance being tested. If a blue-black colour appears, starch is present.

Add benedicts reagent to the liquid being tested and boil for 3 minutes. If a brick red colour appears, glucose is present.


7. Complete the table below to show what a carnivore and a herbivore use their different teeth for when eating.

Type of

tooth

Function in

dogs

Function in

sheep

Incisor pull flesh off bones

Canine chop grass

Premolar +

Molar

chop grass

chew grass

stab + hold prey

crush bones


8. Name the process by which food is moved along the gut.

Peristalsis


9. Arrange the following parts of the alimentary canal in the correct order beginning with the mouth.

Anus, Gullet, Large intestine, Mouth, Rectum, Small intestine, Stomach.


9. Arrange the following parts of the alimentary canal in the correct order beginning with the mouth.

Mouth Gullet Stomach

Small Intestine

Large intestineRectumAnus


10. What is peristalsis?

An involuntary wave of contraction preceded by a wave of relaxation in the muscles of the gut wall.


11. How is the small intestine is adapted for efficient absorption of digested food.

•It is long

•Its inner surface is folded

•Its walls are very thin


12. Name the finger-like projections in the wall of the small intestine.

Villi


14. Which enzymes break down the following foods?.

• Starch -

• Protein -

• Fat -

amylase pepsin

lipase


15. Which part of the villus absorbs the food groups shown below?

FoodPart of villus

which absorbs it

glucose

fatty acids and glycerol

amino acids

capillary

lacteal

capillary


16.Which blood vessel carries blood rich in food products away from the gut?

Hepatic Portal Vein


17.Where does the Hepatic Portal Vein carry the blood to?

The liver


18.What happens to the undigested waste in the large intestine before it moves on to the rectum?

Water is removed from it


19. Complete the following table showing the digestive action of these enzymes.

Enzyme Substrate End-Product

starch

pepsin

fatty ac ids &

glycerol

amylase

lipase

peptideprotein

maltose

fat


20.Decide if the following statements are true or false….

•Human teeth are specialised to cope with a varied diet

•Sheep have no canines in the upper jaw

•Sheep’s molars have rounded surfaces for grinding grass

•Dogs have a rough pad on the upper jaw to remove flesh from bones

•A dog’s canines are long and pointed for piercing and gripping

true

true

false

false

false


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W. McConnell 2004 Kinross High School ANIMAL SURVIVAL (a) The Need For Food