S1 - Cells and Body Systems (complete)

Question 1

Microscope

Answer 1

Instrument used to see objects which are too small to be seen with the eye.

Question 2

Answer 2

Question 3

One of 3 lenses that magnify by 4, 10 or 20X.

Answer 3

Objective lens

Question 4

Answer 4

Question 5

Answer 5

Question 6

Answer 6

Question 7

Stain

Answer 7

A coloured solution used so that a specimen can be seen more clearly.

Question 8

What stain would you use for an onion cell?

Answer 8

Iodine

Question 9

What stain would you use for a cheek cell?

Answer 9

Methylene blue

Question 10

Cover slip

Answer 10

Small glass square that covers the specimen.

Question 11

Slide

Answer 11

Glass rectangle to hold the specimen.

Question 12

Lens at the top of the microscope which magnifies by 10X.

Answer 12

Eyepiece

Question 13

Used to sharpen the image seen in a microscope.

Answer 13

Focus

Question 14

Label the three main parts of an animal cell

Answer 14

Question 15

Answer 15

Question 16

Answer 16

Question 17

Answer 17

Question 18

Cell wall

Answer 18

Supports the plant cell and helps it keep its shape.

Question 19

Vacuole

Answer 19

Stores dissolved salts and sugars.

Question 20

Cell membrane

Answer 20

Controls what substances go in and out of a cell.

Question 21

Cytoplasm

Answer 21

The site of chemical reactions.

Question 22

Nucleus

Answer 22

Contains DNA which controls the cell’s activities.

Question 23

Chloroplast

Answer 23

Where sugars are made in plant cells by photosynthesis. Only green parts of a plant have them (e.g. leaves).

Question 24

Micrometre

Answer 24

1000th of a millimetre.

(1000 micrometers = 1 mm)

Question 25

Multicellular

Answer 25

Made of **many cells**.

Question 26

Specialised cell

Answer 26

A cell **adapted** for a particular **function**. (e.g. egg cell, muscle cell)

Question 27

Tissue

Answer 27

A **group** of **specialised** cells. (e.g. muscle tissue = group of muscle cells)

Question 28

Organ

Answer 28

A structure containing **different types of tissue**. (e.g. heart, lungs, etc.)

Question 29

Organ system

Answer 29

A **group of organs** working together. | (e.g. digestive system)

Question 30

Digestive system

Answer 30

**Breaks down** food and **absorbs** nutrients.

Question 31

Name **three** organs which are part of the **digestive system**.

Answer 31

Any **three** of: Tongue Salivary glands Oesophagus/gullet Stomach Liver Gall bladder Pancreas Small intestine Large intestine Rectum Anus

Question 32

Tube that **squeezes** the food **down** to the stomach.

Answer 32

Oesophagus/gullet

Question 33

A **bag** that **churns up** food. It contains **acid** and **gastric juice**.

Answer 33

Stomach

Question 34

**Wide tube** that undigested food passes through. **Water** is **absorbed** from it back into the body.

Answer 34

Large intestine

Question 35

**Very long tube** food passes through after leaving the stomach. Food is **completely digested** and **absorbed** into the blood stream.

Answer 35

Small intestine

Question 36

Oesophagus/gullet

Answer 36

Tube that **squeezes** the food **down** to the stomach.

Question 37

Stomach

Answer 37

A **bag** that **churns up** food. It contains **acid** and **gastric juice**.

Question 38

Large intestine

Answer 38

**Wide tube** that undigested food passes through. **Water** is **absorbed** from it back into the body.

Question 39

Small intestine

Answer 39

**Very long tube** food passes through after leaving the stomach. Food is **completely digested** and **absorbed** into the blood stream.

Question 40

Circulatory system

Answer 40

**Circulates blood** which carries **materials** around the body.

Question 41

Name **three** organs which are part of the **circulatory system.**

Answer 41

Any **three** of: heart arteries veins capillaries blood

Question 42

Heart

Answer 42

**Pushes blood** through the **blood vessels**.

Question 43

Arteries

Answer 43

**Large** blood vessels. Blood travels through them **away from the heart**. (**A**rteries = **A**way)

Question 44

Veins

Answer 44

**Large** blood vessels. Blood travels through them **towards the heart**.

Question 45

Capillaries

Answer 45

**Very small** blood vessels.

Question 46

**Pushes blood** through the **blood vessels**.

Answer 46

Heart

Question 47

**Large** blood vessels. Blood travels through them **away from the heart**. (**A**rteries = **A**way)

Answer 47

Arteries

Question 48

**Large** blood vessels. Blood travels through them **towards the heart**.

Answer 48

Veins

Question 49

**Very small** blood vessels.

Answer 49

Capillaries

Question 50

Respiratory system

Answer 50

Used for **exchange of gases** with the environment. (exhale carbon dioxide, inhale oxygen)

Question 51

Answer 51

Question 52

Answer 52

Question 53

Answer 53

Question 54

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Question 55

Answer 55

Question 56

Answer 56