Chapter 4: Cellular Processing

Question 1

True or false?

Cells don’t require a constant supply of energy in a usable form

Answer 1

FALSE

Cells require a CONSTANT supply of energy in a usable form

Question 2

What are the two energy relationships?

Energy Relationships

Answer 2

• Autotroph
  -Auto = Self
  -Troph = Nourishment
• Heterotroph
  -Hetero = Others
  -Troph = Nourishment

Question 3

Autotrophs

Answer 3

• Make their food (Organic, energy-containing substance) from an inorganic source
• Examples include plants, algae, and SOME bacteria
• Photosynthetic (Photo = Light)
  -Most of the Autotrophs are in this category)
• Chemosynthetic (Chemo = Inorganic material)
  -Only a small percentage are in this category

Question 4

Heterotrophs

Answer 4

• Depend on other organisms for their energy source
• Examples include humans, animals, fungi, and MOST bacteria

Question 5

Photosynthesis

Answer 5

Photo = Light
Synthesis = Putting together organic compounds

• The process of taking light energy and converting it into stored chemical energy
• Kinetic energy from the sun
• Potential energy in the form of a chemical (glucose)

Question 6

What is the ultimate source of energy?

Answer 6

The Sun.

Question 7

ATP

Answer 7

• Adenosine Triphosphate
• Represents stored energy
• Easily converted to ADP

Question 8

ADP

Answer 8

• Adenosine Diphosphate
• Represents released energy
• Easily converted back to ATP