Biology Post-Test Review

Can photosynthesis occur without light?

• No, because light powers the chemical reaction.

• Yes, because light doesn't provide energy for photosynthesis.

Tags

NGSS.HS-LS1-5

Can respiration occur without sunlight?

• No, because sunlight powers respiration.

• Yes, because respiration is powered by the breaking of glucose molecules.

If a fish bowl with an aquatic plant and a goldfish were left in the dark for a few hours, what would happen to the concentrations of carbon dioxide and oxygen in the water?

• Both concentrations would stay the same.

• CO2 would decrease and O2 would increase.

• CO2 would increase and O2 would decrease.

• Both concentrations would decrease

How does carbon move through an ecosystem if there is no sunlight?

• Available CO2 will be fixed into glucose and O2 will be released as waste. Photosynthesis will occur.

• Available CO2 will be broken down for energy and H2O will be released as waste. Photosynthesis will not occur.

• Available glucose will be broken down for energy and CO2 will be released as waste. Photosynthesis will not occur.

Does an organism need to photosynthesize if they can respire?

• No, because heterotrophs (animals) can gather food to eat for energy.

• Yes, because heterotrophs (animals) must be able to use solar energy to make food.

• Yes, because autotrophs (plants) must be able to use solar energy to make food.

• No, because autotrophs (plants) can gather food to eat for energy.

Eutrophication is caused by

• excess nutrients building up in the water.

• industrial point-source pollution.

• unlined landfills and septic tanks.

• wastewater from homes mixing with drinking water.

Tags

NGSS.MS-ESS3-3

NGSS.MS-ESS3-4

NGSS.MS-LS2-3

NGSS.MS-LS2-4

In eutrophication, plant nutrients cause ________ to bloom.

• algae

• decomposers

• plants

• monkey fish

In eutrophication, dissolved oxygen levels decrease because

• decomposers use it in cellular respiration.

• algae blooms respire & photosynthesize and use it up.

• plant nutrients react with the dissolved oxygen.

How does eutrophication cause the death of aquatic organisms?

• The build up of carbon dioxide in the water.

• The lack of nitrogen in the water.

• The lack of carbon dioxide in the water.

• The lack of oxygen in the water.

How can an algal bloom (eutrophication) lead to a decrease in dissolved oxygen? Select all that apply.

• Algae is a heterotroph and consumes more oxygen than it produces.

• Decreased light penetration limits photosynthesis below the surface.

• Bacteria consume oxygen as they decompose dead algae and other organisms.

• Decomposes that would have produced oxygen are outcompeted by algae.

Tags

NGSS.HS-LS2-4

NGSS.HS-LS2-5