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Science Form 1 > Cells > Flashcards

Cells Flashcards

1
Q

What are all living things made of?

A

Cells

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2
Q

What are the seven characteristics of living things

A 
Movement
Respiration 
Sensitivity
Nutrition
Excretion 
Reproduction 
Growth
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3
Q

What is the mnemonic to remember the 7 characteristics of living things

A

Mrs Nerg
Or
Mrs Gren

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4
Q

How do animals get food

A

They eat other plants and animals

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5
Q

How do plants obtain food

A

Plants obtain food through the process of photosynthesis

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6
Q

What is the equation of respiration

A

Food and oxygen equals carbon dioxide and water and energy

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7
Q

Why do plants and animals need to reproduce

A

All plants and animals eventually die if they reproduce their offspring will live on and their species will survive

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8
Q

What waste of plants and animals get rid off

A

Animals get rid of waste like urine and carbon dioxide

Plants get rid of waste like oxygen

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9
Q

Why must the fox move

A

Fox moves so it can hunt for food

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10
Q

Why does the rabbit move

A

The rabbit moves so it can find food and avoid predators

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11
Q

Why can plants not move from place to place

A

Because they are rooted into this the soil

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12
Q

What part of the body grows least between 18 months and 16 years

A

The head

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13
Q

How do plants react to light

A

They bend towards the light

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14
Q

How do woodlice react to light

A

Woodlice will find a dark area to hide in

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15
Q

How does an alien know that a teddy bear is not alive but a grizzly bear is

A

The grizzly bear can do all seven characteristics of living things but the teddy bear can do none

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16
Q

Are bacteria alive

A

Bacteria can sense where food is and move towards it they feed respire excrete and grow when they’re big enough they reproduce by splitting in half they are alive

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17
Q

Are viruses alive

A

Viruses cannot live by themselves they must get inside a living cell then they can reproduce they are not alive

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18
Q

What are plants and animals made of

A

Cells

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19
Q

How can you see cells

A

Using a microscope

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20
Q

How big our some of our cells

A

Around 0.5 mm

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21
Q

Why must we use a microscope properly

A

Microscopes are expensive to replace you will only be able to see cells clearly if you use the microscope correctly

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22
Q

What are the different parts of a microscope

A

The ocular tube, The rotating nose piece, The objective lenses, the stage clips, the iris diaphragm, the electric light, the eyepiece lense, The body, the stage, the coarse focus control, fine focus control, the base

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23
Q

What is a cell membrane

A

It is a thick skin which controls which substances can enter or leave the cell

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24
Q

What is the cytoplasm

A

It is a thick juice inside the cell all the chemical reactions inside the cell occur here

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25
What is the nucleus
The nucleus is the control centre of the cell it contains chromosomes made of DNA which organise all the cells activities
26
What is the cell wall
The cell wall is made up of Celulose it is strong and helps to support the cell it gives the plant cell a regular shape
27
What are the chloroplasts
They contain the green pigment chlorophyll plants use chloroplasts to absorb sunlight when they make food.
28
What is the permanent vacuole
It is full of watery cell sap it helps to support the cell from the inside like they're in a bicycle tire
29
Why do we not make slides of our own cells
Because there is a very slight chance of spreading disease from one person to another
30
What is in an animal cell
Nucleus, cell membrane, cytoplasm
31
What is in a plant cell
Nucleus, so membrane, cytoplasm, cell wall, chloroplasts, permanent vacuole
32
Why do you onion cells not have chloroplasts
Because onion cells grow underground
33
What is meant by variation
Variations are the slight differences in the Human | body
34
What are some variations
Voice, hair colour, height, Eye colour, skin colour, tongue roller
35
What is the general shape of a bar chart
The general shape of a bar chart is it is short at the start then it gets taller then it gets smaller again. It is bell shaped
36
What is clear-cut variation give to examples
Tongue rolling and ptu tasting
37
What is the shape of a neurone
It they are very long and thin with branches
38
How does the shape help the Nerone
It can carry messages from one end of the body to the other and it can pass the message to lots of other cells
39
What is the shape of a root hair cell for a plant
It has a long thin hair like structure on the side of the cell that goes into the ground
40
How does the shape help the root hair cell
It increases the surface area of the sale so it can absorb the water and minerals from the soil
41
What do cells joined together make
Cells joined together make a tissue
42
What does the liver do
The liver breaks down poison, it helps us digester food, it's stores chemicals like iron
43
What does the heart do
The heart pumps blood around the body
44
What do the lungs do
The land use gas exchange, oxygen goes into the blood and carbon dioxide please
45
What does the kidney do
The kidney filters the blood, removing waste, producing a liquid product called urine
46
What does the stomach do
The stomach holds food and helps digest it
47
What organs are in the digestive system
The garlic, stomach, the small and large intestine, the liver
48
What is the function of the digestive system
It takes in food, breaks it down, absorbs nutrients, it gets rid of faeces
49
What are the diseases of the digestive system
Crohn's, ulcers, IBS
50
What organs are in the respiratory system
The wind pipe, the lungs, the ribs, the diaphragm
51
What is the function of the respiratory system
Breathing, getting air in and out, gas exchange
52
What other diseases of the respiratory system
Lung cancer, bronchitis, asthma
53
What are the main organs in the circulatory system
The heart, blood, blood vessels (arteries, capillaries, veins )
54
What is the function of the circulatory system
Transporting oxygen and chemicals around the body
55
What are the diseases of the circulatory system
Heart attacks, angina, varicose vein's
56
What are the main organs of the excretory system
Kidney, bladder, liver
57
Is the function of the excretory system
Getting rid of waste
58
What are the diseases of the excretory system
Kidney stones, transplant
59
What are the organs of the nervous system
Brain, spinal-cord, nerves
60
What is the function of the nervous system
It's coordinate your body
61
What are the diseases of the nervous system
Strokes, Parkinson is, Alzheimer's
62
What are the main organs of the skeletal system
Bones
63
What is the function of the skeletal system
Support, protection, movement
64
What are the diseases of the skeletal system is
Arthritis, fractures or broken bones, dislocation

Science Form 1 (6 decks)

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