IB ESS

What happens to some of the energy released during cellular respiration?

• It is stored as biomass

• It is transformed into heat

• It is converted into light

• It is destroyed

Tags

NGSS.MS-LS1-7

Which law of thermodynamics explains why energy transformations are inefficient?

• First law

• Second law

• Third law

• Law of conservation of mass

Tags

NGSS.HS-PS3-4

Consumers obtain chemical energy from which type of compounds?

• Inorganic compounds

• Carbon compounds from other organisms

• Water and minerals

• Nitrogen compounds

Tags

NGSS.MS-LS2-1

What is the role of producers in an ecosystem?

• To decompose dead organisms

• To make their own carbon compounds through photosynthesis

• To consume other organisms

• To recycle nutrients

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3

NGSS.MS-LS2-4

What do food chains represent?

• The flow of energy and carbon compounds between organisms

• The number of organisms in an ecosystem

• The total biomass in an ecosystem

• The amount of heat produced by organisms

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What is gross productivity (GP)?

• The total gain in biomass by an organism

• The amount of energy lost as heat

• The energy available to consumers

• The total energy in an ecosystem

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What limits the number of trophic levels in an ecosystem?

• The amount of carbon dioxide

• Energy losses at each trophic level

• The number of producers

• The size of the ecosystem

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which pollutant is known for bioaccumulation and biomagnification?

• Carbon dioxide

• DDT

• Oxygen

• Nitrogen

Tags

NGSS.MS-LS2-4

What is bioaccumulation?

• The breakdown of pollutants by bacteria

• The accumulation of pollutants in the tissues of organisms

• The release of pollutants into the atmosphere

• The recycling of nutrients in ecosystems

Tags

NGSS.MS-LS2-5

How do human activities such as deforestation affect ecosystems?

• They increase biodiversity

• They reduce the flow of energy and matter

• They have no impact on ecosystems

• They increase the number of trophic levels

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-3

NGSS.MS-LS2-4