Biology Unit 8 - Energy & Matter in Ecosystems

Which one of these does not add CO2 to the atmosphere?

• cooking with gas
• planting trees
• burning wood
• riding in a bus

Tags

NGSS.MS-LS1-6

What does not produce carbon dioxide?

• Photosynthesis

• Burning Fossil Fuels

• Cellular respiration

• Plants decaying

How does the carbon in grass become part of a lion?

• The lion eats the grass
• Carbon from grass doesn't end up in a lion. 
• The carbon ends up in the lion's food chain. 
• The lion breathes in carbon given out by the plant

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

Animals obtain the nitrogen they need directly from the

• soil in their habitat
• air they breathe
• plants they eat
• bacteria living within them

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-1

Nitrogen is the most plentiful gas in the atmosphere.

• True
• False

What process converts nitrogen gas into a usable form for plants and animals (ammonia)?

• denitrification

• nitrogen fixation

• cell respiration

• decomposition

Plants and animals cannot use nitrogen directly from the air.

• True
• False

Tags

NGSS.MS-LS2-1

The reactants of photosynthesis are

• sugar and water.

• sugar and oxygen.

• carbon dioxide and water.

• carbon dioxide and oxygen.

What are the products of photosynthesis?

• Carbon dioxide and water

• Carbon dioxide and oxygen

• Glucose and oxygen

• Glucose and water

Which of the following is the correct equation for PHOTOSYNTHESIS?

• 6CO₂ + 6H₂O --> 6O₂ + C₆H₁₂O₆

• 6CO₂ + C₆H₁₂O₆ + 6H₂O --> O₂

• 6O₂ + 6H₂O --> 6CO₂ + C₆H₁₂O₆

• C₆H₁₂O₆+ 6O₂ ---> 6H₂O + 6CO₂