Biochemical Processes 1

Question 1

Nitrogen Fixation

Answer 1

The movement of carbon through the atmosphere, living organisms, oceans, and Earth’s crust..

Question 2

Stages of the nitrogen cycle

Answer 2

Nitrogen fixation
Nitrogen assimilation
Ammonification
Nitrification
Dentrication

Question 3

What are the main reservoirs of carbon on Earth

Answer 3

Oceans
Fossil Fuels
Atmosphere
Biosphere - living organisms

Question 4

Photosynthesis

Answer 4

Most important life process on Earth

The burning of a substance, releasing CO₂.

Removes CO2 from the air

Question 5

What are reactants and products of photosynthesis

Answer 5

Reactants - what is used - CO2, water and sun
products g- oxygen

Question 6

Cellular respiration

Answer 6

“burns” glucose for energy

Question 7

Water Cohesion

Answer 7

Attraction of water molecules to each other

Question 8

Water Adhesion

Answer 8

attraction between water molecules and other molecules.

water up a straw

Question 9

Hydrogen bonding

Answer 9

Hydrogen bonding reduces extreme temperature shifts near large bodies of water

Question 10

Capillary action

Answer 10

movement of water in porous materials due to forces of adhesion, cohesion, and surface tension

Question 11

Autotrophs

Answer 11

Organisms that can product their own food from substances in their surroundings
Light - Photosysthesis
Chemical energy - chemosynthesis

Examples - plants, algae, some bacteria

Question 12

Heterotrophs

Answer 12

Cannot create their own food and rely on other organisms like plants and animals.

Examples - herbivores, omnivores, carnivores

Question 13

How do human activities impact the carbon cycle

Answer 13

burning fossil fuels
deforestation

Question 14

How does agriculture impact the nitrogen cycle?

Answer 14

Nitrogen is needed for plant growth
pesticides and fertilizers

Question 15

How does chlorophyll enable light absorption?

Answer 15

absorbs blue and red light waves and increase the energy

Question 16

Compare Photosynthesis and cellular respiration

Answer 16

Photosynthesis is the process by which plants convert sunlight into energy, while cellular respiration is the process by which cells release energy from glucose

Photosynthesis is endothermic (requires energy input), while cellular respiration is exothermic (releases energy

Photosynthesis produces glucose and oxygen, while cellular respiration produces carbon dioxide and water

Question 17

What is the role of chemosynthesis in deep-sea ecosystem?

Answer 17

food (glucose) is made by bacteria using chemicals as the energy source, rather than sunlight

bacteria living on the sea floor or within animals

Question 18

How does water’s high specific heat moderate the Earth’s climate

Answer 18

water takes a long time to heat up or cool down