Missouri Biology EOC Reveiw

The gopher snake uses its glottis to produce a hiss that sounds similar to a rattlesnake's rattle. What most likely reason a gopher snake would do this?

• to attract prey
• to attract a mate
• to confuse predators 
• to increase adrenaline flow

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NGSS.HS-LS4-2

A population of salamanders that lice in a river require clear, fresh water to survive. A flood causes tons of sediment to be suspended in the river. Which of these most likely will happen to the salamander population?

• The salamanders will adapt to life on land
• The salamanders will move to another river
• The salamanders will adapt to living in the muddy water
• The salamanders will decrease in number because of the water quality 

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NGSS.HS-LS2-6

NGSS.HS-LS4-5

A reduction in which of these would lead to a decrease in all other populations?

• Coyote
• Grass
• Grasshoppers 
• Squirrel 

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NGSS.HS-LS2-1

NGSS.HS-LS2-6

NGSS.HS-LS4-5

Which of these best explains the difference between the way animals and plants exchange gases with their environment?

• Animals use only photosynthesis, while plants use both photosynthesis and respiration
• Animals use only respiration, while plants use both photosynthesis and repiration
• Animals use both photosynthesis and respiration, while plants use only respiration
• Animals use both photosynthesis and respiration, while plants only use photosynthesis

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NGSS.HS-LS2-5

What is the main function of a selectively permeable membrane?

• storage of water
• storage of chemicals
• breaks down molecules within the cell
• regulates what enters and leaves the cell

The papaya mealybug is a pest that poses a threat to many tropical plants. Which fate of the mealybug would result from the inability of the species to reproduce?

• The species would mutate
• The species would increase
• The species would become extinct
• The species would continue to thrive

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NGSS.HS-LS4-2

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In a certain insect, round wings (R) are dominant to pointed wings (r). Which cross will produce the greates number of genotypic and phenotypic variations?

• rr X rr
• Rr X Rr
• Rr X RR
• RR X RR

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NGSS.HS-LS3-2

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Polar bears swim across large expanses of ocean while hunting for seals, their main source of food. The bears use sea ice as a resting spots during their long swims. However, the sea ice is rapidly melting as a result of global warming. Which statement describes what most likely happen if global warming continues at its present rate?

• Polar bear and seal populations will both increase
• Polar bear populations will decrease, and seal populations will increase.
• Polar bear populations will increase, and seal populations will decrease.
• Polar bear populations will decrease, and seal populations will remain the same

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NGSS.HS-LS2-6

NGSS.HS-LS4-5

A strand of DNA is exposed to intense heat. Which of these best describes what will happen to the strand of DNA?

• The chemical bonds of the DNA molecule will be broken
• More nitrogen base pairs will add on the the DNA molecule
• The chemical bonds of the DNA molecule will be strengthened 
• The nitrogen base pairs in the DNA molecule will switch places. 

Which structure is primarily responsible for directiong all processes of a plant cell?

• chloroplast
• lysosome
• mitochondria
• nucleus