๐ฎ๐ธ๐พโฏ๐๐ธโฏโฉ 1 Flashcards
1
Q
Sign for lithium
A
Li
2
Q
Sign for oxygen
A
O
3
Q
Name the 5 things in a animal cell
A
Cytoplasm
Cell membrane
Ribosomes
Mitochondria
Nucleus
4
Q
Explain what a cell membrane does
A
Its job is to control things that come on and out
5
Q
Explain what mitochondria is
A
Where energy is released
6
Q
Explain what the nucleus does
A
The nucleus contains DNA it is also the brain of the cell, it tells the cell what to do
7
Q
Explain what cytoplasm is
A
Where the chemical reactions take place
8
Q
Explain what ribosomes are
A
Ribosomes help to make protein
9
Q
What are the 2 cells
A
Animal cells
Plant cells
10
Q
What is temperature the measurement of?
A
Temperature is the measure of the hotness & coldness of a body.
11
Q
What do you measure temperature in?
A
K- kelvin
12
Q
How is density defined?
A
Density is defined as mass per unit volume
13
Q
If it something floats is it less dense or more dense?
A
If an item floats it is the least dense. If it sinks it is the most dense
14
Q
Name the 7 nutrients
A
Protein
Fat
Vitamins
Minerals
Fibre
Water
Carbohydrates
15
Q
What does our body use protein for?
A
Growth maintenance/repair
16
Q
What does fat do for our body?
A
Helps absorb vitamins/storing energy
17
Q
What do vitamins and minerals do for our body?
A
Helps keep your body healthy
18
Q
What does fibre do for our body?
A
Regulates bacteria in the gut
19
Q
What does water do for our body?
A
Stops dehydration, dissolves nutrients
20
Q
What do carbohydrates do for our body?
A
Energy
21
Q
What is malnutrition?
A
Too much or too little of a nutrient in our diet
22
Q
What are microorganisms
A
Microorganisms are tiny living things that usually can only be seen using a microscope
23
Q
What do microorganisms include
A
Viruses
Bacteria
Microscopic fungi
24
Q
What are mumps symptoms
A
Fever
Headache
Tiredness
Swollen tender/salivary glands
Swollen cheeks or jaw
25
What are pathogens
Pathogens are microorganisms that cause disease
26
Name 2 facts about viruses
Viruses cant exist without a host
Viruses cant be affected by antibiotics
27
What is this?
Explosive
28
What is this?
Oxidising
29
What is this?
Extremely/highly flammable
30
What is this?
Corrosive
31
What is this?
Dangerous for the enviroment
32
What is this?
Harmful/irritant
33
What is this?
Toxic/very toxic
34
What does a toxic substance mean?
Substances which can cause death if they are swallowed, breathed in or absorbed through the skin eg: weedkiller
35
What does a harmful or irritant substance mean?
Substances which should not be eaten, breathed in or handled without gloves. Though not as dangerous as toxic substances they might cause some rash, sickness or an allergic reaction
36
What does an oxidising substance mean?
Substances which provide oxygen, allowing other materials to burn more intensely eg: hair bleach
37
What does highly flammable substance mean?
Substances which which easily catch fire eg: petrol
38
What does corrosive substance mean?
Substances which attack and destroy living tissue, including skin and eyes. Example: oven cleaner
39
What does warning sign mean?
This sign is used to draw attention to a warning of danger, hazards and the unexpected
40
What eye equipment needs to be worn?
Wear safety glasses to protect your eyes.
41
Name the 7 parts of the microscope
Eyepiece
Objective lens
Clips
Stage
Light source
Coarse focus wheel
Fine focus wheel
42
Name 6 things in the plant cell
Chloroplast
Vacuole
Cytoplasm
Cell membrane
Cell wall
Nucleus
43
What does a chloroplast do
Photosynthesis happens here
44
What does the cell wall do?
Provides protection and support to the cell
45
What is the vacuole?
Storage container of the cell
46
Explain all 7 steps of how to prepare a plant cell slide
1. Remove the outer leaves of an onion
2. Use your fingers to pull a strip of thin transparent epidermis from the inner leaf.
3. Place a small piece of the epidermal strip in a microscope slide
4. Add a few drops of iodine solution
5. Add a cover slip, lower it at an angle
6. Blot off any surplus iodine, if necessary
7. The cell can be viewed unstained by using a few drops of water instead of iodine solution
47
What is the SI unit for length?
Metres (m)
48
What is the SI unit for mass
Kilogram (k)
49
What is the SI unit for time
Seconds (s)
50
What is the SI unit for current
Amps
51
How to measure weight
Mass x gravity
52
How to calculate area
Length x width
53
How do you write area?
Cm2
54
What is volume measured in?
Ml (millilitres)
Cm3 (centimetre cubed)
55
Name the 6 methods for calculating volume
Pour some water into a measuring cylinder until it is half full
Carefully read the level of water
Tie the thread around the stone and gently lower it into the water until it sits at the bottom of the cylinder
Carefully read the new level of water
Subtract the first level from the second level to find the volume of the stone
Repeat using 2 different stones
56
Area is calculatedโฆ
Length x width x height
57
What is mass measured in
Grams (g)
58
Name the three states of matter
Solid
Liquid
Gas
59
How is density defined
Density is defined as mass per unit volume
60
What is density the measure of
How tightly packed or heavy the molecules are in an object
61
Measurement of density?
G/cm3
62
Write the 3 main procedures for calculating the density of an irregular shaped object
The mass of the stone is found by placing it on a balance
The volume of the stone is found by gently lowering it completely into a fled overflow can and noting the volume of water that flows out using a graduate cylinder
63
Explain what a compound is
A compound is a substance that is made up from the atoms of two or more different elements chemically joined together
64
what is respiration?
respiration is when red blood cells carry oxygen to all the cells in our body, where it is used to release energy from food.
65
what happens during respiration (not the red blood cells)
During respiration Carbon dioxide and water vapour are produced in each body cell. They enter the bloodstream and are carried in the plasma to the lungs.
66
Artery is close to the surface in the neck and wrist
True
67
Cardiac muscle doesn't ___________ easily
Cardia muscle doesn't tire easily
68
Which of the following veins contain very little carbon dioxide?
Pulmonary
Vena Cava
Renal
Hepatic portal
The pulmonary vein carries oxygenated blood from lungs to heart therefore contains little or no carbon dioxide
69
A vessel in which enzymes are used to make a product is called a ____________
Bioreactor
70
All enzymes are composed of proteins
True, all enzymes are made from proteins
71
What is refrigeration?
The process if removing heat from and enclosed space or from a substance for the process of lowering the temperature
72
What is freezing?
Is a phase transition where a liquid turns in a solid when its temperature is lowered blow its freezing point
73
What is pickling?
The process of preserving or extending the shelf life of food by either anaerobic fermentation in brine or immersion in vinegar
74
What is salting and syrup?
And old-fashioned curing or fermenting process for preserving fruit, vegetables and meat
75
What is drying
Removes enough moisture from the food so bacteria yeast and molds cannot grow
76
What is Pasteurisation
A process in which packaged and non packaged foods are treated with mild heat, usually to less than 100โ, to eliminate pathogens and extend shelf life
77
What does mumps risk?
The outbreak of mumps affects higher education institutions because student and staff who become infected are at risk of spreading the illness to others
78
Does oxygenated go in the right or left side?
Oxygenated blood goes through the right side.
79
Does deoxygenated blood go through the left side?
Yes
80
Name the 4 veins from the heart in order
Vena cava
Pulmonary artery
Aorta
Pulmonary vein
81
What does the mouth do?
Eating and breaking down food
82
What do the salivary glands do?
The salivary glands produce saliva and enzymes
83
What does the liver do
Break down toxins
84
What does the pancreas do
Produces insulin
85
What does the anus do
Releases waste
86
What does the gall bladder do
Produces bile
87
What does the large intestine do
Absorbs water and salt
88
What does the small intestine do
Helps digest food from stomach
89
What does the rectum do
Stores waste
90
What does the stomach do
Store food
91
What do veins do and look like
Veins carry blood toward your heart. They have a thin cell wall and thick lumen
92
What do arteries do and look like
Arteries carry blood away from the heart. They have thick cell walls and small lumens
