Chapter 1 - Biology

Question 1

What does photosynthesis mean?

Answer 1

A process when plants make their own food using light, water, carbon dioxide

Question 2

Function of cuticle

Answer 2

• Waxy layer

* Prevent water loss

Question 3

Function of upper epidermis

Answer 3

• transparent

* so that sunlight can pass through

Question 4

Function of Palisade cells

Answer 4

• contain lots of chlorophyll

* carry out photosynthesis

Question 5

Function of Spongy layer

Answer 5

•provide air spaces to store carbon dioxide

Question 6

Function of Vein

Answer 6

• Contains Xylem and Phloem
• Xylem = transport water to the leaves
• Phloem = transport food away from leaves

Question 7

Function of stomata

Answer 7

Allow carbon dioxide to diffuse in and oxygen to diffuse out

Question 8

Function of lower epidermis

Answer 8

•protection

Question 9

Plant cell

Answer 9

Contains : 
Cell wall 
Chloroplasts 
Cytoplasm 
Nucleus 
Cell membrane 
Vacuole

Question 10

Oxygen diffuses from the AIR

IN THE LUNGS into the BLOOD

Answer 10

Oxygen DIFFUSES from Blood to BODY CELLS

Question 11

THE HEART

Answer 11

• Made of CARDIAC MUSCLE

- Can CONTRACT and RELAX CONTINUOUSLY

Question 12

Heart has VALVES

Answer 12

VALVES open to allow BLOOD to FLOW

Question 13

7 types of NUTRIENTS

Answer 13

• water
• fats
• minerals
• protein
• fibre
• vitamins
• carbohydrates

Question 14

Why do we eat NUTRIENTS

Answer 14

• provides energy

- provides material for growth

Question 15

Equation for PHOTOSYNTHESIS

Answer 15

6 Co2 + 6 H2O [light energy]> coH,2O2 + 6 O2

Question 16

How many chambers does heart have

Answer 16

4 chambers

Question 17

Name the chambers

Answer 17

• right atrium
• right ventricle
• left atrium
• left ventricle

Question 18

Cell membrane

Answer 18

Control the SUBSTANCE that get in and out

Question 19

Cell wall

Answer 19

Contains Cellulose

Question 20

Nucleus

Answer 20

Control the CELL ACTIVITIES and carries GINETIC INFO like DNA

Question 21

Chloroplasts

Answer 21

Contains CHLOROPLAST- A green pigment to CARRY OUT PHOTOSYNTHESIS

Question 22

Vacuole

Answer 22

Contain a liquid called SAP

Question 23

Material made of living cells and tissue

Answer 23

Biomass

Question 24

3 types of saliva

Answer 24

Amylase
Water
Mucin

[ amylase is a COMPONENT of an ENZYME ]

[the substance in SALIVA that makes food EASIER TO SWALLOW]

Question 25

On which nutrient does the ENZYME work?

Answer 25

Carbohydrates

Question 26

What is PRODUCED by this ENZYME ?

Answer 26

Glucose

Question 27

Incisor

Answer 27

Bite food

Question 28

Canine

Answer 28

Tearing

Question 29

Pre-molar and Molar

Answer 29

Crushing and Grinding

Question 30

What does the action of the teeth do to the food ?

Answer 30

It helps to BREAKS food into SMALLER PIECES

Question 31

Large molecules

Answer 31

- dissolve in water | - CANNOT PASS THROUGH the lining of the DIGESTIVE SYSTEM into the body

Question 32

Small food molecule

Answer 32

- can DISSOLVE and can PASS THROUGH the wall of the DIGESTIVE SYSTEM into the body

Question 33

Protein makes

Answer 33

- Antibodies - Enzymes - Hormones [ Sugar + Glucose = Energy ] _________________________________________________ - enzymes are also known as CATALYSTS - why are enzymes known as catalysts ? - they SPEED UP REACTIONS but are not changed or used up in them

Question 34

The outer surface of the tooth is called

Answer 34

Enamel

Question 35

Under the enamel, it is the

Answer 35

Dentine

Question 36

At the center of the tooth is the gum

Answer 36

It contains PULP CAVITY and BLOOD SUPPLIES FOR THE TOOTH

Question 37

Below the gums

Answer 37

Jawbone