Light Reactions Flashcards
What does Redox mean?
Reduction-Oxidation
What is oxidation-reduction (redox) reactions?
The redox reactions involve electrons passing from one molecule to another
Oxidation is the _____________ of electrons while Reduction is the ______________ of electrons
loss; gain
What are the tasks of ATP?
- Chemical work: ATP is used for building macromolecules
- Transport work: ATP is used for transporting ions membranes
- Mechanical work: ATP is used for mechanical processes such as muscle contraction, cilia movement
How do plants harness light energy to manufacture food?
Photosynthesis
How do living organisms harness energy from food?
Cellular Respiration
Formula of Photosynthesis
6CO2 + 6H20 -> C6H12O6 + 6O2
Formula of Cellular Respiration
C6H12O6 + 6O2 -> 6CO2 + 6H20
Plants are ____________. This term means “self-feeders” in Greek.
Autotrophs
Autotrophs make their own food and thus sustain themselves without?
Eating other organisms or even organic molecules
Plants are referred to as the ____________ of the biosphere
Producers
Plants are not only the producers certain ________, _______, and ________ also make food molecules from inorganic materials
Bacteria, Archaea, Protists
All organisms that use light energy to make food molecules are called?
Photosynthetic Autotrophs
______, _____, and _____________________ all use light energy to drive the synthesis of organic molecules from carbon dioxide and water
Plants; Algae; Photosynthetic Bacteria
All green parts of a plant have ____________ and can carryout photosynthesis
Chloroplasts
In most plants, what part of the plant has the most chloroplasts?
The leaves
The green color in plants comes from where?
Chlorophyll pigments in chloroplasts
Chloroplasts are concentrated in the cells of the _________.
Mesophyll
What is the definition of Mesophyll?
Mesophyll is defined as the green tissue in the interior of the leaf
Carbon dioxide enters the leaf and the oxygen exits by way of tiny pores called?
The Stomata