Download (a) The Need For Food - Hillpark Secondary School

ANIMAL SURVIVAL
(a) The Need For Food
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
W. McConnell 2004 Kinross High School
1.
What are the 3 main food groups?
•
Carbohydrate
• Fat
• Protein
W. McConnell 2004 Kinross High School
2.
Name the simplest form of each
food group.
•
Carbohydrate - glucose
?
• Fat
- Fatty
?
acids + glycerol
• Protein
- ?
amino acids
W. McConnell 2004 Kinross High School
3.
Which elements do each food
group contain?
Carbohydrate - ?Carbon, hydrogen, oxygen.
Fat
- ?Carbon, hydrogen, oxygen.
Protein
Carbon, hydrogen, oxygen,
-?
nitrogen.
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4.
Digestion is the process of breaking down
small
………
……… particles into ………
large
insoluble
………
soluble particles, so that they can be
absorbed through the gut wall into the
…………
blood
………
W. McConnell 2004 Kinross High School
5.
Name the reagent used to test for:
•
starch - iodine
?
reagent
• glucose - benedicts
?
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6.
What is the test for:
Add iodine to the substance being
• starch - tested.
?
If a blue-black colour
appears, starch is present.
Add benedicts reagent to the
being tested and boil for 3
• glucose - liquid
?
minutes. If a brick red colour
appears, glucose is present.
W. McConnell 2004 Kinross High School
7. Complete the table below to show what a
carnivore and a herbivore use their different
teeth for when eating.
Type of
Function in
Function in
tooth
dogs
sheep
Incisor
pull flesh off
bones
Canine
Premolar +
Molar
stab + hold
prey
crush bones
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chop grass
chop grass
chew grass
8. Name the process by which food is moved
along the gut.
Peristalsis
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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.
W. McConnell 2004 Kinross High School
9. Arrange the following parts of the alimentary
canal in the correct order beginning with the
mouth.
Mouth
Gullet
Stomach
Small Intestine
Anus
Rectum
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Large intestine
10.
What is peristalsis?
An involuntary wave of
contraction preceded by a
wave of relaxation in the
muscles of the gut wall.
W. McConnell 2004 Kinross High School
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
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12.
Name the finger-like projections in the
wall of the small intestine.
Villi
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14.
Which enzymes break down the
following foods?.
• Starch -
amylase
• Protein -
pepsin
• Fat
lipase
-
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15.
Which part of the villus absorbs the food
groups shown below?
Food
Part of villus
which absorbs it
glucose
capillary
fatty acids
and glycerol
lacteal
amino acids
capillary
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16.
Which blood vessel carries blood
rich in food products away from the
gut?
Hepatic Portal Vein
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17.
Where does the Hepatic Portal
Vein carry the blood to?
The liver
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18.
What happens to the undigested
waste in the large intestine before
it moves on to the rectum?
Water is removed from it
W. McConnell 2004 Kinross High School
19.
Complete the following table showing
the digestive action of these
enzymes.
Enzyme
Substrate
End-Product
amylase
starch
maltose
pepsin
protein
peptide
lipase
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fat
fatty acids &
glycerol
20.
Decide if the following statements
are true or false….
•Human teeth are specialised to cope with a varied diet false
•Sheep have no canines in the upper jaw true
•Sheep’s molars have rounded surfaces for grinding grass false
•Dogs have a rough pad on the upper jaw to remove flesh from
bones false
•A dog’s canines are long and pointed for piercing and gripping true
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