Which structures in the small
intestine of humans serve to increase
the surface area for absorption?
A.
B.
C.
D.
Flagella
Pseudopodia
Villi
Intestinal glands
The chemical digestion of proteins in
humans begins in the
A.
B.
C.
D.
Oesophagus
Stomach
Mouth
Liver
Mechanical digestion of our food
begins in the
A.
B.
C.
D.
Stomach
Epiglottis
Mouth
Liver
The breaking apart or dispersal of
lipids into smaller droplets is called
A.
B.
C.
D.
Hydrolysis
Deamination
Synthesis
Emulsification
Which nutrient groups are chiefly
acted upon by stomach enzymes?
A.
B.
C.
D.
Lipids
Proteins
Carbohydrates
Proteins and carbohydrates
Bile helps to
A.
B.
C.
D.
Neutralise fat
Emulsify fat
Digest fatty acids and glycerol
Emulsify glycerol
The least digestion of food occurs in
the
A.
B.
C.
D.
Small intestine
Oesophagus
Mouth
Stomach
In humans, food is moved from the
mouth to the stomach as a result of
A.
B.
C.
D.
Diffusion
Circulation
Egestion
Peristalsis
Which organ in the human digestive
tract secretes HCL and proteases?
A.
B.
C.
D.
Pancreas
Stomach
Small intestine
Gall bladder
Which of the following are
accessory organs in the human
digestive tract?
A.
B.
C.
D.
stomach, gall bladder, oesophagus
Epiglottis, liver, stomach
Liver, pancreas, gall bladder
Gall bladder, pancreas, oesophagus
The organs numbered “2” and “7”
respectively are
A. Pancreas and
stomach
B. Pancreas and liver
C. Gall bladder and
stomach
D. Gall bladder and
pancreas
In humans, chemical digestion is
accomplished by enzyme action that
begins in the mouth and ends in the
A.
B.
C.
D.
Liver
Small intestine
Gall bladder
Stomach
Which organ secretes bicarbonate
ions and what are their purpose?
A.
B.
C.
D.
Liver- to emulsify fats
Pancreas- to emulsify fats
Liver- to neutralise stomach acid
Pancreas- to neutralise stomach acid
Which of the following
enzyme/macromolecule
combinations are correctly matched?
A. Amylase/carbohydrate, lipase/fat,
protease/protein
B. Amylase/protein, lipase/carbohydrate,
protease/fat
C. Amylase/carbohydrate, lipase/protein,
protease/protein
D. Amylase/fat, lipase/carbohydrate,
protease/protein
Some Short Answer questions….
1. What’s the difference between an
autotroph and a heterotroph?
2. How do the digestive tracts of carnivores
and herbivores compare?
3. What is the role of enzymes in digestive
systems? Select one enzyme and use the
“Lock and Key” Model of enzyme action
to explain how it works.