Ch. 12.3

Question 1

(1) is the process when food is broken into small, soluble substances that can be absorbed and used by body cells.

Answer 1

Digestion

Question 2

Digestion is the process when food is broken into (1), (2) substances that can be (3) and used by (4).

Answer 2

small, soluble, absorbed, body cells

Question 3

The digestive system is made up of (1) and some (2).

Answer 3

alimentary canal, digestive glands

Question 4

Digestive glands produce (1).

Answer 4

digestive juices

Question 5

Food travels through (1).

Answer 5

alimentary canal

Question 6

Food is broken into smaller pieces without changing to a new substance in (1) digestion.

Answer 6

mechanical

Question 7

Mechanical digestion refers to the process of breaking food into smaller pieces without (1).

Answer 7

changing to a new substance

Question 8

Complex food substances are broken down into simple food substances by chemical reactions in (1) digestion.

Answer 8

chemical

Question 9

Chemical digestion refers to the process of breaking down (1) food substances into (2) food substances by (3), involving (4).

Answer 9

complex, simple, chemical reactions, digestive enzymes

Question 10

Mouth cavity

Food is digested by (1) mechanically. It increases (2).

Answer 10

chewing, surface area

Question 11

Mouth cavity

Food is digested by (1) chemically. It makes the food (2) and easier to (3). It also breaks down (4) into (5).

Answer 11

saliva, moist, swallow, starch, sugar

Question 12

Oesophagus

(1) pushes food down to the (2).

Answer 12

Peristalsis, stomach

Question 13

Stomach

Food is digested by (1) mechanically. The muscles (2) and (3) to break the food into smaller pieces. It helps (4) the food with (5).

Answer 13

churning, contract, relax, mixing, gastric juice

Question 14

Stomach wall secrets (1), which contains (2) and (3). They break down (4) and kill (5).

Answer 14

gastric juice, enzymes, hydrochloric acid, proteins, bacteria

Question 15

Small intestine

Food is digested by (1) mechanically. (2) pushes food and helps (3) the food with (4) and (5).

Answer 15

bile, peristalsis, mixing, pancreatic juice, intestinal juice

Question 16

Small intestine

Food is digested by (1) and (2) chemically.

Answer 16

pancreatic juice, intestinal juice

Question 17

Bile is produced in (1) and stored in (2). It does not contain (3). It (4) lipids into (5). It increases (6).

Answer 17

liver, gall bladder, enzymes, emulsifies, small oil droplets, surface area

Question 18

Intestinal juice is secreted from (1). Pancreatic juice and that contain enzymes that break down (2), (3) and (4).

Answer 18

small intestine’s wall, carbohydrates, proteins, lipids

Question 19

(1) is the process of substances and water passing through small intestine’s wall and entering the blood capillaries.

Answer 19

Absorption

Question 20

Absorption refers to the process of substances and (1) passing through (2) and entering (3).

Answer 20

water, small intestine’s wall, blood capillaries

Question 21

Absorbed food substances are carried via (1).

Answer 21

transport system

Question 22

Large intestine

(1) and remaining (2) are absorbed. (3) waste called (4) are left and they are stored in (5) temporarily. They soon passed out of the body through (6).

Answer 22

Minerals, water, Semi-solid, faeces, large intestine, anus

Question 23

Matching (Multi-options)
A Saliva…………………………..1 Carbohydrates
B Gastric juice………………….2 Proteins
C Pancreatic juice…………….3 Lipids
D Intestinal juice……………….4 Starch

Answer 23

A 4
B 2
C 1 2 3
D 1 2 3

Question 24

Four types of teeth: (1), (2), (3) and (4)

Answer 24

incisor, canine, premolar, molar

Question 25

Incisor is (1) and with (2). It is used for (3) and (4) food.

Answer 25

chisel-shaped, sharp edges, biting, cutting

Question 26

Canine is (1) and used for (2) food.

Answer 26

pointed, tearing

Question 27

Premolar has (1) and (2). It is used for (3) and (4) good.

Answer 27

cusps, broad chewing surface, grinding, crushing

Question 28

Molar has the (1) and more (2). It is the (3) in size, used for (4) and (5) food.

Answer 28

broadest chewing surface, cusps, largest, crushing, grinding

Question 29

Matching A Incisor.......................1 Pointed B Canine.....................2 Two roots C Premolar..................3 Have cusps D Molar.........................4 Chisel-shaped

Answer 29

A 4 B 1 C 2 D 3

Question 30

(1) is the part exposed in tooth.

Answer 30

Crown

Question 31

(1) is the part surrounded by the gum.

Answer 31

Neck

Question 32

(1) is the part embedded inside the jawbone.

Answer 32

Root

Question 33

Crown is the part (1) in tooth.

Answer 33

expose

Question 34

Neck is the part surrounded by (1).

Answer 34

gum

Question 35

Root is the part (1) inside (2).

Answer 35

embedded, jawbone

Question 36

(1) is a non-living tissue.

Answer 36

Enamel

Question 37

Enamel is a (1) tissue which (2) tooth from (3). It is the (4) material in human body.

Answer 37

non-living, protects, damage, hardest

Question 38

(1) is a bone-like living tissue.

Answer 38

Dentine

Question 39

Dentine is a (1) living tissue which makes up a (2) part of the tooth.

Answer 39

bone-like, large

Question 40

(1) is the centre of the tooth.

Answer 40

Pulp cavity

Question 41

Pulp cavity is (1) of the tooth which contains (2) and (3).

Answer 41

centre, blood vessels, nerves

Question 42

Blood vessels supply (1) and (2) while nerves detect (3) and (4).

Answer 42

oxygen, nutrients, pain, temperature

Question 43

(1) supply oxygen and nutrients while (2) detect pain and temperature.

Answer 43

Blood vessels, nerves

Question 44

Root is covered by (1) which (2) root to (3) through (4).

Answer 44

cement, attaches, jawbone, periodontal membrane

Question 45

(1) is caused by the action of bacteria in our mouth.

Answer 45

Tooth decay

Question 46

Tooth decay is caused by the action of (1) in our (2).

Answer 46

bacteria, mouth

Question 47

Bacteria and food (1) in our mouth form (2) and (3) layer called (4).

Answer 47

debris, invisible, sticky, plaque

Question 48

Bacteria on the plaque act on (1) in food to produce (2).

Answer 48

sugar, acid

Question 49

The acid produced by bacteria may damage (1) and make a (2).

Answer 49

enamel, hole

Question 50

``` Put in order A Acid irritates nerves B May have to remove the tooth C Form plaque D Toothache E Spread to dentine and pulp cavity ```

Answer 50

C E A D B

Question 51

Saliva is slightly (1) which helps (2) the acid.

Answer 51

alkaline, neutralize

Question 52

(1) happens when plaque is accumulated.

Answer 52

Periodontal diseases

Question 53

Accumulated plaque will (1) and form (2).

Answer 53

harden, calculus

Question 54

Bacteria in the plaque secrete (1) and make the gums become (2) and (3). The gums thus (4) easily.

Answer 54

toxins, red, swollen, bleed

Question 55

(1) might be destroyed if periodontal disease is not treated.

Answer 55

Jawbone

Question 56

``` Put in order A Bacteria secrete toxins B Tooth falls out C Calculus forms D Tooth looses E Gums become red and swollen ```

Answer 56

A C E D B or | A E C D B

Question 57

Have (1) at least once a year can find out if there are any dental problems.

Answer 57

dental check-up

Question 58

(1) can remove plaque between adjacent teeth.

Answer 58

Dental floss

Question 59

(1) contain (2) can strengthen enamel and increases acid-resistance.

Answer 59

Toothpastes, fluoride

Question 60

Chew (1) after meal can stimulate the secretion of (2).

Answer 60

sugar-free gums, saliva