8/19/2019 L Obj 2.4.doc

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Villi Lacteal

Learning Objective: 2.4 Understanding the process of absorption of digested food.

Learning Outcomes:

• Explain the process of absorption of the products of digestion.

• Make inference about the absorption of glucose through a Visking tube.

1. The diagram belo shos part of a human small intestine.

i!  Identify the parts labelled X and Y using the ords gi"en.

X: ################   Y: ################# 

ii! Underline the correct anser in the statement belo to explain the process of absorption of the products of digestion.

 The presence of "illi $increases % decreases! the surface area of the small intestine

hich enables digested food to be absorbed efficientl&.

2. The diagram belo shos an experiment on the absorption of food. The result is

shon in the table belo.

a.

What is present in the distilled ater at the end of the experiment'

 #######################.

b. ive one reason for &our anser in 2$a!.  ################################################################## 

  ################################################################## 

!ns"er #cheme

$ype of food in distilled"ater 

%eginning of 

e&periment

'nd of 

e&periment

(tarch )bsent )bsent

*lucose )bsent +resent

8/19/2019 L Obj 2.4.doc

2/2

Villi Lacteal

Learning Objective: 2.4 Understanding the process of absorption of digested food.

1. The diagram belo shos part of a human small intestine.i!  Identify the parts labelled X and Y using the ords gi"en.

X: Villi   Y: ,acteal

ii! Underline the correct anser in the statement belo to explain the process of absorption of the products of digestion.

 The presence of "illi $increases % decreases! the surface area of the small intestine

hich enables digested food to be absorbed efficientl&.

2. The diagram belo shos an experiment on the absorption of food. The result is

shon in the table belo.

a.

What is present in the distilled ater at the end of the experiment'

*lucose

b. ive one reason for &our anser in 2$a!.

  The si-e of glucose molecules is smaller than the starch molecules. 

$ype of food in distilled"ater 

%eginning of 

e&periment

'nd of 

e&periment

(tarch )bsent )bsent

*lucose )bsent +resent