Unit #1: PreAP Biology Performance Assessment Review

What type of population would you ESTIMATE using the quadrat method?

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A living or once-living organisms in an ecosystem is a

• population
• biotic factor
• abiotic factor
• community

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If 50 crabs were captured and marked and then released and then a few days later 25 were caught and of those 5 were marked. What would the estimate of the population be?

N= (M x S) / R

M=Marked Individuals Released

R= Marked Animals Recaptured

S=Size of Second Sample

N= Estimated Population

• 500

• 250

• 75

• 200

Which of the following accurately describes the difference between mark recapture and quadrat sampling?

• Quadrat sampling is used for mobile populations and mark recapture is used for stationary populations

• Quadrat sampling is used for stationary populations and mark recapture is used for mobile populations

• Quadrat sampling can only be used for small populations

• Mark recapture sampling can only be used for small populations

When humans burn fossil fuels, most of the carbon quickly enters the                       as carbon dioxide.

• Water
• Atmosphere
• Sun
• Air

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In the carbon cycle, producers take in the gas __

• carbon dioxide
• oxygen
• nitrogen
• carbon monoxide

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How does the carbon in grass become part of a lion?

• The lion eats the grass
• Carbon from grass doesn't end up in a lion. 
• The carbon ends up in the lion's food chain. 
• The lion breathes in carbon given out by the plant

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What converts nitrogen gas into a usable form for plants and animals?

• bacteria

• rain

• fungi

• car exhaust

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How do animals get the nitrogen they need?

• From the air they breathe

• From the water they drink

• From the food they eat

• From the sun

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Gas that makes up 78% of our atmosphere.

• Oxygen

• Nitrogen

• Hydrogen

• Carbon Dioxide