WorksheetsYear 8 Digestive System
Total questions: 26
Worksheet time: 13mins
Where does digestion begin?
in the stomach
in the mouth
in the esophagus
in the small intestine
What is the muscular tube that pushes food from the mouth the to stomach?
tongue
esophagus
small intestine
large intestine
The ______________ is where food is mixed with juices and is squeezed and churned until it becomes a thick liquid called chyme
esophagus
stomach
small intestine
large intestine
The five major processes of digestion are:
(a)
Recall which part of the digestive system is indicated by the red arrow in the picture below.
Liver
Rectal Cavity
Small Intestine
Large Intestine
Cheese fondue is a popular dinner dish in some countries. In the small intestine, the fat from the cheese is converted into simpler fatty acids and glycerol.
Identify which type of digestion this is.
Mechanical
Chemical
Which organ absorbs water and in the last stage of the digestive process?
Liver
Small intestine
Pancreas
Large intestine
An organ that stores bile after it is produced by the liver.
Pancreas
Small intestine
Gallbladder
Large intestine
What are the two types of Digestion?
Chemical digestion & Mechanical digestion
Mechanical digestion & Muscular Digestion
Chemical digestion & Muscular digestion
Dermal digestion & Muscular digestion
The tiny little structures that line the small intestine are called
Bronchi
Villi
Bile
Enzymes
Why do we need food to break apart the food we eat?
So it can fit into our stomachs
So our bodies can use the nutrients from the food
So liquids can be separated from solids
So that our bodies' enzymes have something to do.
What are these structures called that are found on the lining of the small intestine?
Gallbladder
Villi
Sphincter
Duodenum
What is an enzyme?
A substance that speeds up chemical reactions
Lipid and amino acid particles
An accessory organ
The site of gas exchange
Most enzymes end with the letters:
(a)
Which part of the digestive system is primarily responsible for nutrient absorption?
Stomach
Small Intestine
Large Intestine
Esophagus
What is the role of bile in digestion?
Neutralizes stomach acid
Breaks down carbohydrates
Emulsifies fats
Absorbs nutrients
Which of the following ratios is the same as 24 : 8?
1 : 3
3 : 1
8 : 3
8 : 24
Microvilli are tiny projections that extend off the cell to increase the Surface Area. What purpose might that serve?
Increased absorption of nutrients
Better communication among cells
Maintain homeostasis
Decreased oxygen use
This image displays:
Higher concentration of red molecules in A compared to B
Diffusion of red molecules will take place from B to A
Higher concentration of red molecules in B compared to A
Diffusion of yellow molecules will take place from A to B
What process has occurred between the broken down food (amino acids, monosaccharides) with the bloodstream of the villi:
osmosis
transfer of matter
concentration
diffusion
Proteins are broken down into:
lipids
amino acids
monosaccrides
fatty acids
Diffusion is the movement of particles in a substance from an area of:
high to low concentration
hot to cold temperature
low to high concentration
between concentrations equally
Fats are broken down into:
fatty acid and lipase
lipase and polypeptides
fatty acid and glycerol
fatty acids and polypeptides
Carbohydrates are broken down into:
Proteins
Lipids
Fats
Glucose
