AP Biology Unit Two

The molecular formula for glucose is C₆H₁₂O₆. What would be the molecular formula for a polymer made by linking 10 glucose molecules together by dehydration reactions?

• C₆₀H₁₁₁0₅₁

• C₆₀H₁₀₂0₅₁

• C₆₀H₁₂₀0₆₀

• C₆₀H₁₀₀0₅₀

Tags

NGSS.HS-LS1-6

Why does increasing producers increase the populations of all trophic levels?

• Producers increase the size of a habitat

• Producers help keep predator populations in check

• With more energy available the carrying capacity increases

• Producers do not have a large impact on population sizes

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Which of these describes a mutualistic relationship?

• When one organism is harmed, but the other is benefitted

• When one organism is unaffected, and the other is harmed

• When one organism benefits, and the other is unaffected

• When both organisms involved benefit

Tags

NGSS.MS-LS2-2

How do invasive species impact ecosystems?

• The increase density dependent limiting factors

• They establish themselves as new keystone species in an area

• The open up new niches in the ecosystem

• They outcompete native species and overpopulate the area

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Which of the following best explains why there are seldom more than five trophic levels in a food chain?

• Most carnivores function at more than one trophic level

• Trophic levels about this numbers contain too many individuals

• Energy is lost from each trophic level

• The ecosystem contains too much biomass

Tags

NGSS.MS-LS2-3

Which point on the graph represents carrying capacity?

• A

• B

• C

• D

During the carbon cycle, which of the following carbon compounds would be utilized as an energy source by heterotrophs? 

• carbonic acid

• organic molecules

• carbon dioxide

• carbon monoxide

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which letter shows the the exponential growth of a population?

• A

• B

• C

• D

Two animals live together in close association.  One benefits, while the other is unaware of or unaffected by the first animal. The relationship is best described as

• Parasitism

• Mutualism

• Commensalism

• Predation

Tags

NGSS.MS-LS2-2

Refer to the diagram of the survivorship curve.
Which curve best describes an organism that invests a lot of energy in parenting?

• A

• B

• C

• this is not a survivorship curve