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