Shared Flashcard Set

Details

Biology Exam 3
N/A
57
Biology
10/12/2011

Additional Biology Flashcards

 


 

Cards

Term
What is the cell theory?
Definition
All organisms made of 1 or more cells
Cell is fundamental unit of life
All cells come from pre existing cells
Term
What is the main difference between prokaryotic and eukaryotic cells?
Definition
Prokaryotes don't have a membrane bound nucleus.
Term
Where is prokaryotic DNA information found?
Definition
In the Nucleoid
Term
What formed the Golgi and ER of eukaryotic cells?
Definition
The folding of the cell membrane
Term
What is the Endosymbiosis Theory?
Definition
Ancient organism engulfed another organism and they two worked as partners
Term
Which two structures support the Endosymbiosis Theory?
Definition
Mitochondria and Chloroplasts
Term
What happens in the chloroplasts?
Definition
Site of photosynthesis
Term
What happens in the mitochondria?
Definition
Cellular respiration extracts energy from food.
Term
What is metabolism?
Definition
All chemical reactions in a cell
Term
What is energy?
Definition
The ability to do work
Term
What is the first law of thermodynamics?
Definition
Energy can't be created or destroyed
Energy can only be converted to other forms
Energy transformations sustaining life are similar in all organisms
Term
What is the second law of Thermodynamics?
Definition
Some energy is lost to heat
Happens in Entropy
Organisms use incoming energy and matter to remain organized
Term
What is an Endergonic reaction?
Definition
Energy being put in
Term
What is an Exergonic reaction?
Definition
Energy being released
Term
What type of process is Exergonic?
Definition
Cellular respiration
Term
What type of process is Endergonic?
Definition
Photosynthesis
Term
What is entropy?
Definition
The random molecular movement that produces heat
Term
How is ATP formed?
Definition
ATP+Pi= ATP
Term
How is ATP formed?
Definition
ATP+Pi= ATP
Term
When is energy released in ATP?
Definition
When the third phosphate bond breaks
Term
What are the parts of ATP?
Definition
Adenine, Ribose, and 3 Phosphate groups
Term
What is an enzyme?
Definition
A protein that catalyzes a chemical reaction without being consumed
Term
Are enzymes specific?
Definition
Yes
Term
How do charged ions cross a membrane?
Definition
Through a protein channel
Term
Molecules going against their concentration gradient require...?
Definition
Active transport (ATP)
Term
Draw a table of cell membrane permeability
Definition
Term
Draw and label components of a biological reaction involving an enzyme
Definition
Term
What is the chemical reaction of photosynthesis?
Definition
CO2+ H20 > C6 H12 0d + O2
Term
What are the 3 photosynthetic organisms?
Definition
Plants, Algae, and Bacteria
Term
What is the photosynthetic organ?
Definition
Chloroplasts
Term
Where are photosynthetic pigments found?
Definition
On the thylakoids which are in chloroplasts
Term
What is a primary pigment?
Definition
Chlorophyl
Term
Where do light reactions occur?
Definition
Stroma of chloroplasts
Term
What do light reactions do?
Definition
let light in to produce NADPH and ATP which fuel the calvin cycle
Term
What fuels the calvin cycle?
Definition
NADPH and ATP
Term
Where does the calvin cycle happen?
Definition
Stroma of chloroplasts
Term
What does the calvin cycle do?
Definition
Uses energy from light reactions to convert co2 to sugar
Term
How do C3 plants stop water loss?
Definition
Close stroma
Term
What are C4 plants and how do they differ?
Definition
Corn and grass. They separate calvin cycle and light reactions in space
Term
What are CAM plants and how do they differ?
Definition
Cactus. They open stroma at night to let cool air in and they separate light reactions and calving cycle in space
Term
In order for Aerobic Respiration to happen there must be
Definition
Oxygen
Term
What is the purpose of Aerobic Respiration?
Definition
To extract energy from glucose
Term
Chemiosmotir Phosphorylation
Definition
Generates most ATP
Term
Cellular respiration starting material
Definition
Glucose
Term
Cellular respiration products
Definition
ATP
Term
2 stages of Cellular respiration
Definition
Gylcosis and Krebs cycle
Term
Where does glycosis happen?
Definition
cytoplasm
Term
Where does the Krebs cycle happen?
Definition
matrix of mitochondria
Term
When does fermentation happen?
Definition
In the absence of 02
Term
When does fermentation stop?
Definition
After glycosis
Term
What happens during glycosis?
Definition
glucose is broken down
Term
What happens during the Krebs cycle
Definition
ATP is produced... gois
Term
How does glycosis produce NADPH?
Definition
First five steps of glycosis reactivate glucose which splits the molecule in half and some is stored as NADPH
Term
How does glycosis produce ATP?
Definition
Substrate level phosphorylation
Term
How is the Krebs cycle activated?
Definition
Acetyl coA
Term
What is produced by Krebs cycle?
Definition
A lot of ATP
Term
Differences in chemiosmotor phosphorylation and substrate level?
Definition
Substrate: donor molecule transfers phosphate to ADP

Chemiosmotor: ATP synthase