6821997
Description
Quiz by Lindsay White, updated more than 1 year ago
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Created by Lindsay White
about 8 years ago
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Question 1
Question
What is the definition of life?
Answer
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"a biological system which has the ability to reproduce, mutate and evolve in response to changing environments"
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"a material system which has the ability to self-replicate, mutate and evolve in response to changing environments"
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"a material system which has the ability to reproduce, mutate and evolve in response to changing temperatures"
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"a Biological system which has the ability to self-replicate, mutate and evolve in response to changing temperatures"
Question 2
Question
What is the second law of thermodynamics?
Answer
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The entropy of an isolated system not in equilibrium will tend to increase over time, approaching a maximum value at equilibrium.
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As temperature approaches absolute zero, the entropy of a system approaches a constant minimum.
Question 3
Question
What are Advantages of Carbon in the evolution of complex life?
Answer
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Strength & Quantity
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Size & structure
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Mass & Volume
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Speed and Velosity
Question 4
Question
which element has the greatest ability to bond with itself creating greater variety and long Chains?
Answer
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Carbon
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Oxygen
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Potassium
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Hydrogen
Question 5
Question
The element silicon has similar chemical properties to carbon – it can form four separate chemical bonds, and has been suggested, particularly by science fiction writers, as a basis for life forms, why is it not such a likely candidate as carbon?
Answer
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Chemical bonds are not as strong, cannot form double bonds & and is more likely to bond with Oxygen to for smaller molecules rather than long chains.
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Chemical bonds are not as strong, it always forms double bonds & and is more likely to bond with Oxygen to for smaller molecules rather than long chains.
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Chemical bonds are too strong and will not break
Question 6
Question
Of all the requirements for life, almost all biologists would agree that water, or some other liquid, is the most important. Complex chemistry is not likely to develop far in the rigid structure of a solid; nor is it likely to develop in a vapour as it would be hard to keep all the working components together.
Answer
- True
- False
Question 7
Question
Why is water "Stable"?
Answer
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Water exists as a liquid over a very broad temperature range. At atmospheric pressure this range is 0 to 100°C, whereas at higher pressures the range extends upwards to 363°C. There is no other abundant molecule which significantly overlaps this stable range.
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Water exists as a liquid over all temperature ranges. There is no other abundant molecule which significantly overlaps this stable range.
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Water is very unstable.
Question 8
Question
Why is water so abundant?
Answer
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It is composed of H (Hydrogen) which is the third most abundant element in the universe.
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It is composed of O (Oxygen) which is the third most abundant element in the universe.
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There it a lot of H2O on earth thus abundant.
Question 9
Question
Why is Oxygen Chemistry very active?
Answer
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lot of energy is available in chemical reactions involving free (molecular) oxygen
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lot of energy is available in chemical reactions involving fixed (molecular) oxygen
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Oxgyen emits lots of energy
Question 10
Question
What are Environmental Conditions?
Answer
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Temperature, atmospheric composition, mass and age
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Time & Water present.
Question 11
Question
What other conditions are necessary to protect life?
Answer
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Protection from radiation, Moderate and stable temperatures & Atmospheric recycling mechanisms.
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Protection from solar winds, Moderate and stable temperatures & Atmospheric recycling mechanisms.
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Protection from solar winds, Moderate and water source & Atmospheric recycling mechanisms.
Question 12
Question
Is Short wavelength radiation is damaging to biological tissues?
Answer
- True
- False
Question 13
Question
On Earth we are protected from the malign effects of UV radiation by a thin layer of ozone. Which atom makes up the ozone?
Answer
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OZone, a molecule composed of three oxygen atoms, which absorbs the radiation.
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OZone, a molecule composed of three hydrogen atoms, which absorbs the radiation.
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OZone, a molecule composed of three carbon atoms, which absorbs the radiation.
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OZone, a molecule composed of three nitrogen atoms, which absorbs the radiation.
Question 14
Question
What is the The Habitable Zone?
Answer
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0.6 to 1.5 astronomical units from the sun
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1.5 to 3 astronomical units from the sun
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3 to 6 astronomical units from the sun
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6 to 9 astronomical units from the sun
Question 15
Question
What will happen if the planetary surface is too close to the star?
Answer
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Too much heat / Radiation
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Not enough heat and too much radation
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Not enough radiation to hot
Question 16
Question
What happens to water the surface of a planet if its too close to the surface of a star?
Answer
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Liquid water will not exist, the surface will be too warm, ultraviolet radiation from the central star may dissociate the water, breaking H2O into its constituents H and O.
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Water is permanently frozen.
Question 17
Question
What other factors determin whether a planet can maintain liquid water
Answer
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Mass of the planet
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Geothermal activity
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Shape and density
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Atmosphere
Question 18
Question
What is the greenhouse effect?
Answer
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The presence of "greenhouse gases" in the atmosphere of a planet leads to warming of the surface
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A planet being close to the sun thus being very hot
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The Ozone layer stopping heat escaping the atmosphere
Question 19
Question
The Earth’s crust is broken up into large rigid plates, which move slowly across its surface, riding on a hotter deformable layer. This is called?
Answer
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plate tectonics
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Movable plates
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Floating Plates
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Tectonic ridges
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