Question 1
Question
What is the function of a cell's nucleus?
Question 2
Question
What is the function of the ribosomes?
Answer
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To absorb light energy for photosynthesis
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To act as the site for protein synthesis
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To release energy by respiration
Question 3
Question
Metal atoms form...
Answer
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Ribosomes are the site of protein synthesis. Mitochondria are the site of energy release by respiration
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Ribosomes are the site of protein synthesis. Mitochondria are the site of energy release by respiration.
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Positive ions by losing electrons
Question 4
Question
Alveoli is another word for windpipe
Question 5
Question
In what period of its life is our Sun?
Answer
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Main sequence
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Major sequence
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Minor sequence
Question 6
Question
A very massive star may explode at the end of its life. This is a....
Answer
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Supernova
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Neutron star
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Black hole
Question 7
Question
Respiration is a chemical reaction that happens in your cells
Question 8
Question
Why does sodium chloride have a lower melting point than magnesium chloride?
Answer
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Its positive ions are smaller and have a smaller charge
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Its positive ions are larger but have a smaller charge
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Its positive ions are smaller but have a larger charge
Question 9
Question
When the diaphragm contracts, it moves down and there is more room, so air rushes into the lungs.
Question 10
Question
Which salt is made when calcium carbonate reacts with hydrochloric acid?
Answer
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Sodium chloride
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Calcium chloride
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Calcium sulfate
Question 11
Question
The Alveoli are shaped like it is to increase the surface area
Question 12
Question
Carbon Dioxide and Water are produced from Respiration
Question 13
Question
The symbol equation for neutralisation is:
Answer
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acid + alkali → salt + water
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H+(aq) + OH-(aq) → H2O(aq)
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H+(aq) + OH-(aq) → H2O(l)
Question 14
Question
A suitcase travels on a conveyor belt. What happens to its momentum if the belt speeds up?
Answer
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It increases
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It stays the same
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It decreases
Question 15
Question
What happens to the suitcase's momentum if the conveyor belt goes round a corner?
Question 16
Question
What happens to the total momentum of a firework when it explodes?
Answer
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It increases
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It stays the same
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It decreases
Question 17
Question
When acids and alkalis dissolve in water...
Answer
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Acids produce hydroxide ions and alkalis produce hydrogen ions
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Acids produce hydrogen ions and alkalis produce hydroxide ions
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Acids and alkalis produce hydrogen ions
Question 18
Question
Energy is released in stars by...
Answer
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Nuclear fusion
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Nuclear fission
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Gravitational attraction
Question 19
Question
Stars form from dust and gas due to...
Answer
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Nuclear fusion
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Nuclear fission
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Gravitational attraction
Question 20
Question
In around four billion years, what will our Sun become?
Answer
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A red dwarf
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A red giant
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A red super giant
Question 21
Question
Which of these is not a natural source of radiation?
Answer
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Food and drink
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Medical x-rays
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Cosmic rays
Question 22
Question
What do radiation badges do?
Answer
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They emit radiation for workers to use
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They monitor the radiation dose a worker receives
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They protect a worker from absorbing radiation
Question 23
Question
The half-life of an isotope is 1 hour. How long will it take for the count rate to fall to one-quarter of the starting rate?
Question 24
Question
Atom X has 7 neutrons and 7 electrons. It decays to form atom Y with 5 neutrons and 5 protons...
Question 25
Question
Atom X has 7 neutrons and 7 electrons. It decays to form atom Z with 6 neutrons and 8 protons
Question 26
Question
Organisms such as bacteria and Amoeba are described as [blank_start]unicellular[blank_end] while larger organisms are multicellular
Answer
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unicellular
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multicellular
Question 27
Question
The process of getting oxygen into your lung is [blank_start]breathing[blank_end]
Question 28
Question
A chemical process in your cells is [blank_start]respiration[blank_end]
Question 29
Question
Getting carbon dioxide out of your lungs through [blank_start]breathing[blank_end]
Question 30
Question
[blank_start]Respiration[blank_end] takes place in mitochondria
Question 31
Question
[blank_start]Respiration[blank_end] is a process that releases energy
Question 32
Question
Respiration is the process that releases energy from food. Why is this done?
Answer
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In mammals - to maintain a constant body temperature
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To allow molecules to diffuse through membranes
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To enable muscles to contract
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To build larger molecules from smaller ones
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In plants - to build up sugars, nitrates and other nutrients into amino acids
Question 33
Question
Label the Animal Cell diagram
Answer
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Mitochondrion
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Cell Membrane
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Nucleus
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Cyptoplasm
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Nucleolus
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Centrioles
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Golgi Body
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Endoplasmic Reticulum
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Ribosome
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Microtubules
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Lysosome