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Biology Test 2
Chapters 5-8
36
Biology
Undergraduate 1
03/22/2012

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Term
Two Laws of Thermodynamics
Definition
1. Conservation
2. Entropy
Term
Earth:
Open System or Closed
Explain.
Definition
Open: We have the sun that is an outside source of energy
Term
Law of Conservation
Definition and Role it plays in energy flow
Definition
Energy cannot be created or destroyed. It can only change forms.
Term
Law of Entropy
Definition and Role it plays in energy flow
Definition
when energy is converted from one form or another, some is lost to entropy = unusable energy=measure of disorder
Term
Endergonic
Def. and relationship to the laws of thermodynamics.
Definition
Stores energy, Energy inward: Requires more energy to proceed. ex: Building a building.
Term
Exergonic
Def. and relationship to the laws of thermodynamics.
Definition
Chemical reactions that release energy. Energy Outward: Releases energy. Products contain less energy than the reactant. Ex: Blowing a building up.
Term
Biochemical formula for Photosynthesis
Definition
C0â‚‚ + Hâ‚‚0->(C6H12O6/glucose) + Oâ‚‚
Term
Structure of Chloroplasts
Definition
c6H12o6 + 02 -> CO2 + H20 +ATP's
Term
where does photosynthesis Take place?
Definition
Chloroplasts of the cell using chlorophyll
Term
Calvin Cycle uses what and produces what
Definition
C02 and Glucose
Term
Pigment proteins are responsible for what? Primary?
Definition
Sunlight energy absorption. Chlorophyll A.
Term
Leaf structure
Definition
Leaves have trichomes
Term
Energy Definition
Definition
The capacity to do work
Term
Kinetic
Definition
Energy in action
Term
Potential energy
Definition
Stored energy
Term
Photo-respiration
Definition
When O2 is used as a reactant in the Calvin cycle instead of CO2. Because it keeps the cycle going.
Term
C4 photosynthesis:
Definition
Stores CO2 as a 4 carbon Molecule in the mesophyll cells, Shuttles co2 into a bundle sheath cell for photosynthesis Ex: Corn, Sugar Cane
Term
CAM Photosynthesis:
Definition
Mostly desert plants, Store co2 as a 4 carbon malic acid in the vacuoles of mesophyll cells. Ex: Cacti, Aloe
Term
Biochemical Formula for Cellular Respiration.
Definition
c6H12o6 + 02 -> CO2 + H20 +ATP's
(Reverse of Photosythesis)
Term
structure of mitochondria
Definition
Outer Membrane, Inner Membrane, Cortox
Term
Where does cellular respiration Take place?
Definition
Mitochondria
Term
How is glucose processed?
Definition
Cells use this energy to produce another molecule called ATP which help with other functions of the body, atp to muscles for movement.
Term
Glycolysis
Definition
Requires no oxygen
Term
Anaerobic Respiration
Definition
(Animal Cells) Converts pyruvate into Lactic Acid
Term
Fermentation
Definition
They convert pyruvate into ethanol and co2
Term
G1 Phase
Definition
Normal cellular activity and any specialized activity (for the type of cell it is)
Term
Potential fates of a cell
Definition
Damage repair, Stay in G1 phase (b/c they lack physical structures), Apoptosis -> Programmed cell death, Cell Division
Term
S Phase
Definition
DNA Replicates.
Term
G2 Phase
Definition
Rapid Growth of cell before mitosis and a check point
Term
Mitosis: 4 Phases
Definition
Metaphase, Anaphase, Telophase, Cytokinesis
Term
Metaphase
Definition
Chromosomes align along the equator of the cell and creates a polar nature in side the cell
Term
Anaphase:
Definition
Sister chromatids separate and move into the opposing poles
Term
Telophase
Definition
chromosomes uncoil, nuclei form mitotic spindle is disassembled
Term
cytokinesis
Definition
Cell splits into 2
Term
Diploid organisms
Definition
2 copies of every chromosome/gene. 2N=46 (23 pairs)
Term
Why is Mitosis important?
Definition
Genetic stability, Growth, Regeneration and cell replacement, Asexual reproduction
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