Unit 4 Test Review

What is the primary difference between prokaryotic and eukaryotic cells?

• Prokaryotic cells have a nucleus, while eukaryotic cells do not.

• Eukaryotic cells have membrane-bound organelles, while prokaryotic cells do not.

• Prokaryotic cells are multicellular, while eukaryotic cells are unicellular.

• Eukaryotic cells lack DNA, while prokaryotic cells contain DNA.

Which of the following is a method to reduce the human impact of motor vehicles releasing carbon into the atmosphere?

• Increasing the use of coal-fired power plants

• Promoting the use of ride shares

• Expanding deforestation activities

• Reducing the number of public transportation options

Tags

NGSS.MS-ESS3-3

How do viruses replicate?

• By dividing independently in the environment

• By using a host cell

• By forming spores

• By binary fission

What is the effect of excess nitrogen and phosphorus in a lake?

• It increases the oxygen levels in the water.

• It causes a dense mat of algae to grow, blocking sunlight.

• It decreases the water temperature.

• It promotes the growth of fish populations.

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NGSS.MS-LS2-3

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Which organelles are believed to have evolved from prokaryotic cells to eukaryotic cells?

• Ribosomes and lysosomes

• Chloroplasts and mitochondria

• Nucleus and endoplasmic reticulum

• Golgi apparatus and vacuoles

What is the order of classification from broadest to most specific?

• Species, genus, family, order, class, phylum, kingdom

• Kingdom, phylum, class, order, family, genus, species

• Phylum, kingdom, class, order, family, genus, species

• Class, order, family, genus, species, kingdom, phylum

Why can't viruses be defined as organisms according to the cell theory?

• They do not have a nucleus.

• They are not composed of cells.

• They do not contain DNA.

• They cannot reproduce.

Which of the following strategies would help reduce the heat island effect in urban areas?

• Increasing the use of asphalt and concrete

• Planting trees and creating green spaces

• Building more skyscrapers

• Expanding industrial zones

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NGSS.MS-LS2-5

NGSS.MS-ETS1-3

Explain how biomagnification affects the food chain.

• It decreases the amount of energy available at each trophic level.

• It increases the concentration of toxins like mercury in higher trophic levels.

• It reduces the biodiversity of an ecosystem.

• It enhances the growth of primary producers.

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NGSS.MS-LS2-4

Discuss the impact of deforestation on carbon dioxide levels in the atmosphere.

• Deforestation decreases carbon dioxide levels because trees release carbon when cut.

• Deforestation increases carbon dioxide levels because there are fewer trees to absorb carbon.

• Deforestation has no impact on carbon dioxide levels.

• Deforestation increases oxygen levels in the atmosphere.

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NGSS.MS-ESS3-4

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