BIOLOGY FORM 4 CHAPTER 9

1.

Multiple Choice

30 sec

1 pt

Which of the following correctly describes the purpose of digestion?

To break down complex food molecules into simple soluble molecules

To make complex food molecules from simple soluble molecules

To make use of simple soluble food molecules

To remove complex food molecules from the body

2.

Multiple Choice

30 sec

1 pt

Large food molecules need to be broken down to be small enough to pass through cell membranes.

True

False

3.

Multiple Choice

30 sec

1 pt

Which statement is NOT true about proteins?

Protein digestion begins in the mouth.

Proteins are used for cell growth and repair.

Proteins are broken down to form amino acids.

Some complex proteins function as enzymes in the body.

4.

Multiple Choice

30 sec

1 pt

Where is the digestion of food completed?

liver

large intestine

stomach

small intestine

5.

Multiple Choice

30 sec

1 pt

Why is the oesophagus muscular?

To break the food into even smaller pieces

To produce enzymes to digest food

To push food from the mouth into the stomach

To move the food back and forth in two directions

6.

Multiple Choice

30 sec

1 pt

Where does carbohydrate digestion begins?

liver

mouth

oesophagus

stomach

7.

Multiple Choice

30 sec

1 pt

Where does protein digestion begins?

large intestine

mouth

small intestine

stomach

8.

Multiple Choice

30 sec

1 pt

Where does fat digestion begins?

colon

liver

small intestine

stomach

9.

Multiple Choice

30 sec

1 pt

Which of the following kills bacteria in the human alimentary canal?

gastric juice

mucus

pancreatic juice

saliva

10.

Multiple Choice

30 sec

1 pt

This is an image of the

stomach

small intestine

esophagus

large intestine

11.

Multiple Choice

30 sec

1 pt

The diagram represents a portion of a human body. The principal function of structure X is to

produce salivary enzyme

produce sex hormone

absorb water

absorb nutrients

12.

Multiple Choice

30 sec

1 pt

Which structure represented in the diagram below absorbs most of the fatty acids and glycerol .This structure is present in

Stomach

Mouth

small intestine

large intestine

13.

Multiple Choice

20 sec

1 pt

Which digestive organ is represented by the letter B

Pancreas

Liver

Mouth

small intestine

14.

Multiple Choice

20 sec

1 pt

What is the function of a liver?

To call Raegan a gweeb

to transfer foods

to produce enzymes

to produce bile

15.

Multiple Choice

20 sec

1 pt

What is the function of a small intestine

to crunch the food

To add enzymes

Contains hydrochloric acid

To absorb nutrients and water

16.

Multiple Choice

20 sec

1 pt

What is the process known as peristalsis

The process that transfers food from the mouth to the stomach. Also known as swallowing

The process that breaks down food by chewing and mashing

17.

Multiple Choice

30 sec

1 pt

The stomach accomplish this type of digestion by churning.

mehcanical

chemical

enzymes

ulcer

18.

Multiple Choice

30 sec

1 pt

The majority of digestion occurs in the:

large intestine

small intestine

ulcer

rectum

19.

Multiple Choice

30 sec

1 pt

When many large carbohydrates are chemically digested they are broken into many smaller _____

proteins

amino acids

simple sugars

enzymes

20.

Multiple Choice

30 sec

1 pt

Villi present in the small intestine are important because they create more ______ so that more digested food can be abosrbed into the blood stream.

feces

enzymes

lipids

surface area

21.

Multiple Choice

30 sec

1 pt

Excess water is re-absorbed from undigested food by this______

large intestine

small intestine

appendix

stomach

22.

Multiple Choice

30 sec

1 pt

Digestion begins in the where?

Mouth

Stomach

Pancreas

Gallbladder

23.

Multiple Choice

30 sec

1 pt

True or False: In the stomach, food is squeezed and mashed. The food changes into a thick liquid called chyme.

True

False

24.

Multiple Choice

30 sec

1 pt

Look at the diagram. In which structure does the initial digestion of carbohydrates occur?

A - Mouth

E - Small Intestine

C - Stomach

D - Pancreas

25.

Multiple Choice

30 sec

1 pt

In the image what is the name of part #3?

1-Mouth

3-Pancreas

2-Stomach

4-Large Intestine

26.

Multiple Choice

30 sec

1 pt

In the image what numbers are a part of the digestive tract?

1, 2, 3, 5

2, 3, 5

1, 2, 6, 4

27.

Multiple Choice

30 sec

1 pt

The longest part of the digestive system is the …………………..

esophagus

small intestine

stomach

large intestine

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