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Duplicate of AQA GCSE Biology B1-B7 Flashcards | StudBud
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Duplicate of AQA GCSE Biology B1-B7
Duplicate of AQA GCSE Biology B1-B7
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New AQA GCSE specification (2018) Focus on: Cells, Digestion, Organisation & Pathogens and Disease
Flashcards
42 cards
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Practice quiz
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Host live
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Questions
42
Answers
1
Usually these extensions help exchange materials by...
Having a good blood supply
Having a large vacuole
Having a thin membrane
Having a thick membrane
2
What does a plant cell have that an animal cell does not?
Chloroplasts, cell wall and vacuole
Chloroplasts and nucleus
Chloroplasts, cell wall and nucleus
Chloroplasts and cell wall
3
What is the role of the green chloroplasts in plant cells?
It makes energy
It absorbs light for photosynthesis
It controls the actions of a cell
It fights infection
4
In diffusion particles move from...
Against the concentration gradient
High to low concentration
Anywhere
Low to high concentration
5
What do pacemakers do?
Stop heart attacks
Help you move at pace
Regulate HR through electrical impulses
Control your brain
6
What could you use if you arteries/valves in your heart are faulty?
Heart transplant
A pump
Exercise
Stent
7
How does a stent work?
It helps maintain blood flow
It expands the blood vessel
It reduces fat
It pumps your blood
8
What is an advantage of a light microscope?
You can easily cover it up
You can view living cells/tissue
You can easily transport it
You can only see large structures
9
What external defenses do we have?
Skin
Sweat
White blood cells
Teeth
10
Biological catalysts in our body are known as what?
Enzymes
Tissue
Organs
Bacteria
11
What happens to an enzyme past 45 degrees?
It's denatured
It dies
It grows
Nothing
12
Give an example of a eukaryotic cell.
Virus
Disease
Bacteria cell
Animal cells e.g. Sperm
13
What piece of equipment measures temperature?
Thermal device
Cold tube
Heat measure
Thermometer
14
Where are sperm produced?
Ovum
Ovaries
Penis
Testes
15
What structure could you view using an electron microscope
but not with a light microscope
?
Mitochondria
Nucleus
You can see the same
Cell membrane
16
Why do we not get infected by the same virus?
The virus has been killed
Its all lies sir!
Our body keeps the virus
Memory cells produce antibodies previously made
17
When a heart fails with a pacemaker the next option is?
A new pacemaker
A stent
Heart transplant
Death!
18
Why does bacteria spread so easily?
It multiplies fast
It detects your body temperature
It can survive in the external environment
It has a lot of DNA
19
Why does the rate of reaction decrease when temperature is too high?
The blood boils
The enzyme has popped
The enzyme breaks down other enzymes
Active site of the enzyme has changed shape
20
Why is the DNA of a sperm different to other cells?
It has no nucleus
It contains half of the fathers DNA
It contains half of the mothers DNA
It isn't different
21
How do these projections help it exchange material?
Increase surface area
Help it sense around it
Short diffusion pathway (Thin membrane)
Increase the temperature
22
What is a characteristic of a prokaryotic cell?
Chloroplasts
Cell membrane
DNA is not in a nucleus
Smaller than Eukaryotic cells
23
On animals thin projections/extensions do what?
Nothing
Help absorb sunlight
Look cool
Increase the surface area
24
What is a characteristic of a eukaryotic cell?
DNA in a nucleus
They move
They reproduce
Flagellum
25
What is a disadvantage of an electron microscope?
They zoom too much!
They only come in white
They are often very expensive
The sample has to be dead/not living
26
What is the best science?
Biology
Biology
Biology
Biology
27
In active transport the particles move...
Using energy
from a high to low concentration
Randomly
Against the concentration gradient
28
Digestion involves the breakdown of nutrients and...
Creation
Breakdown
Absorption
Build up
29
An amount of liquid is known as...
Amount
Weight
Millimeters
Volume
30
When in doubt about an adaptation of something in biology what do you always guess?
Leave it bank
Increased blood flow
Rage quit!
Increased surface area
31
What is the smallest pathogen?
Disease
Virus
Fungus
Bacteria
32
The sperm is a specialized cell. How is it adapted for its role?
It has strong cell wall
It has enzymes in its head to help enter the egg (ovum) cell
It has many chloroplasts
It has a tail to help it swim to the ovum
33
How can we prevent the spread of disease?
Sharing
Developing antibiotic resistance
Vaccination
Quarantine
34
Why is 'lock and key' used to describe enzymes?
The substrate is metal
If the nutrient is wrong then the enzyme won't work
Only one type of substrate can fit specific a enzyme
The enzyme breaks it like a key in a lock
35
What is the test for starch?
Biurets (Turns purple)
Iodine (Turns blue/black if present)
Ethanol (Shake and solutions separates going cloudy)
Benedict's (Heat up with solution and turns red/yellow)
36
What is the role of the nucleus in a cell?
It controls what passes in and out of the cell
It controls the cells actions
It contains DNA and controls the cell actions
It moves the cell
37
Which microscope has a higher magnification?
Electron
Light
38
What is coronary heart disease?
Breathing problems
Arteries are flowing backwards
Heart attack
Coronary arteries are blocked with fat
39
What happens the rate of reaction as temperature increases?
It stops
Nothing
It increase (Speeds up)
It decreases (Slows down)
40
What is the role of a white blood cell?
To heal you muscles
To transport oxygen
To carry messages
To fight pathogens
41
What do white blood cells produce?
Antigens
Antibacteria
Antibodies
Antiseptic
42
Give an example of a prokaryotic cell.
Ovum
Muscle cell
Fungus
Bacteria cell
