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Science Form 1 > Cells > Flashcards

Cells Flashcards

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Biology 101 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
Q

What is the nucleus

A

The nucleus is the control centre of the cell it contains chromosomes made of DNA which organise all the cells activities

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26
Q

What is the cell wall

A

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
Q

What are the chloroplasts

A

They contain the green pigment chlorophyll plants use chloroplasts to absorb sunlight when they make food.

28
Q

What is the permanent vacuole

A

It is full of watery cell sap it helps to support the cell from the inside like they’re in a bicycle tire

29
Q

Why do we not make slides of our own cells

A

Because there is a very slight chance of spreading disease from one person to another

30
Q

What is in an animal cell

A

Nucleus, cell membrane, cytoplasm

31
Q

What is in a plant cell

A

Nucleus, so membrane, cytoplasm, cell wall, chloroplasts, permanent vacuole

32
Q

Why do you onion cells not have chloroplasts

A

Because onion cells grow underground

33
Q

What is meant by variation

A

Variations are the slight differences in the Human

body

34
Q

What are some variations

A

Voice, hair colour, height, Eye colour, skin colour, tongue roller

35
Q

What is the general shape of a bar chart

A

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
Q

What is clear-cut variation give to examples

A

Tongue rolling and ptu tasting

37
Q

What is the shape of a neurone

A

It they are very long and thin with branches

38
Q

How does the shape help the Nerone

A

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
Q

What is the shape of a root hair cell for a plant

A

It has a long thin hair like structure on the side of the cell that goes into the ground

40
Q

How does the shape help the root hair cell

A

It increases the surface area of the sale so it can absorb the water and minerals from the soil

41
Q

What do cells joined together make

A

Cells joined together make a tissue

42
Q

What does the liver do

A

The liver breaks down poison, it helps us digester food, it’s stores chemicals like iron

43
Q

What does the heart do

A

The heart pumps blood around the body

44
Q

What do the lungs do

A

The land use gas exchange, oxygen goes into the blood and carbon dioxide please

45
Q

What does the kidney do

A

The kidney filters the blood, removing waste, producing a liquid product called urine

46
Q

What does the stomach do

A

The stomach holds food and helps digest it

47
Q

What organs are in the digestive system

A

The garlic, stomach, the small and large intestine, the liver

48
Q

What is the function of the digestive system

A

It takes in food, breaks it down, absorbs nutrients, it gets rid of faeces

49
Q

What are the diseases of the digestive system

A

Crohn’s, ulcers, IBS

50
Q

What organs are in the respiratory system

A

The wind pipe, the lungs, the ribs, the diaphragm

51
Q

What is the function of the respiratory system

A

Breathing, getting air in and out, gas exchange

52
Q

What other diseases of the respiratory system

A

Lung cancer, bronchitis, asthma

53
Q

What are the main organs in the circulatory system

A

The heart, blood, blood vessels (arteries, capillaries, veins )

54
Q

What is the function of the circulatory system

A

Transporting oxygen and chemicals around the body

55
Q

What are the diseases of the circulatory system

A

Heart attacks, angina, varicose vein’s

56
Q

What are the main organs of the excretory system

A

Kidney, bladder, liver

57
Q

Is the function of the excretory system

A

Getting rid of waste

58
Q

What are the diseases of the excretory system

A

Kidney stones, transplant

59
Q

What are the organs of the nervous system

A

Brain, spinal-cord, nerves

60
Q

What is the function of the nervous system

A

It’s coordinate your body

61
Q

What are the diseases of the nervous system

A

Strokes, Parkinson is, Alzheimer’s

62
Q

What are the main organs of the skeletal system

A

Bones

63
Q

What is the function of the skeletal system

A

Support, protection, movement

64
Q

What are the diseases of the skeletal system is

A

Arthritis, fractures or broken bones, dislocation

Science Form 1 (6 decks)

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