4269479
Descrição
Quiz por Olivia Bamber, atualizado more than 1 year ago
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Criado por Olivia Bamber
mais de 8 anos atrás
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Questão 1
Questão
What is the function of a cell's nucleus?
Responda
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To act as a brain
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To control the movement of substances into and out of the cell
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To control the activities of the cell
Questão 2
Questão
What is the function of the ribosomes?
Responda
-
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
Questão 3
Questão
Metal atoms form...
Responda
-
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
Questão 4
Questão
Alveoli is another word for windpipe
Responda
- True
- False
Questão 5
Questão
In what period of its life is our Sun?
Responda
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Main sequence
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Major sequence
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Minor sequence
Questão 6
Questão
A very massive star may explode at the end of its life. This is a....
Responda
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Supernova
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Neutron star
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Black hole
Questão 7
Questão
Respiration is a chemical reaction that happens in your cells
Responda
- True
- False
Questão 8
Questão
Why does sodium chloride have a lower melting point than magnesium chloride?
Responda
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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
Questão 9
Questão
When the diaphragm contracts, it moves down and there is more room, so air rushes into the lungs.
Responda
- True
- False
Questão 10
Questão
Which salt is made when calcium carbonate reacts with hydrochloric acid?
Responda
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Sodium chloride
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Calcium chloride
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Calcium sulfate
Questão 11
Questão
The Alveoli are shaped like it is to increase the surface area
Responda
- True
- False
Questão 12
Questão
Carbon Dioxide and Water are produced from Respiration
Responda
- True
- False
Questão 13
Questão
The symbol equation for neutralisation is:
Responda
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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)
Questão 14
Questão
A suitcase travels on a conveyor belt. What happens to its momentum if the belt speeds up?
Responda
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It increases
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It stays the same
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It decreases
Questão 15
Questão
What happens to the suitcase's momentum if the conveyor belt goes round a corner?
Responda
-
It stays the same
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It changes
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It is not possible to know
Questão 16
Questão
What happens to the total momentum of a firework when it explodes?
Responda
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It increases
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It stays the same
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It decreases
Questão 17
Questão
When acids and alkalis dissolve in water...
Responda
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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
Questão 18
Questão
Energy is released in stars by...
Responda
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Nuclear fusion
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Nuclear fission
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Gravitational attraction
Questão 19
Questão
Stars form from dust and gas due to...
Responda
-
Nuclear fusion
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Nuclear fission
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Gravitational attraction
Questão 20
Questão
In around four billion years, what will our Sun become?
Responda
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A red dwarf
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A red giant
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A red super giant
Questão 21
Questão
Which of these is not a natural source of radiation?
Responda
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Food and drink
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Medical x-rays
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Cosmic rays
Questão 22
Questão
What do radiation badges do?
Responda
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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
Questão 23
Questão
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?
Responda
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1 hour
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2 hours
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4 hours
Questão 24
Questão
Atom X has 7 neutrons and 7 electrons. It decays to form atom Y with 5 neutrons and 5 protons...
Responda
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The decay was alpha decay
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The decay was beta decay
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The decay was gamma decay
Questão 25
Questão
Atom X has 7 neutrons and 7 electrons. It decays to form atom Z with 6 neutrons and 8 protons
Responda
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The decay was alpha decay
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The decay was beta decay
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The decay was gamma decay
Questão 26
Questão
Organisms such as bacteria and Amoeba are described as [blank_start]unicellular[blank_end] while larger organisms are multicellular
Responda
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unicellular
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multicellular
Questão 27
Questão
The process of getting oxygen into your lung is [blank_start]breathing[blank_end]
Responda
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breathing
Questão 28
Questão
A chemical process in your cells is [blank_start]respiration[blank_end]
Responda
-
respiration
-
breathing
Questão 29
Questão
Getting carbon dioxide out of your lungs through [blank_start]breathing[blank_end]
Responda
-
breathing
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respiration
Questão 30
Questão
[blank_start]Respiration[blank_end] takes place in mitochondria
Responda
-
Respiration
Questão 31
Questão
[blank_start]Respiration[blank_end] is a process that releases energy
Responda
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Respiration
Questão 32
Questão
Respiration is the process that releases energy from food. Why is this done?
Responda
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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
Questão 33
Responda
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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
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