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Bio Review Chapters 8-10
Test Review
53
Biology
Graduate
02/28/2012

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Term
What is true about anabolic processes.
Definition
nonspontaneous, endergonic, energy input required to start the process, Delta G always positive, photosynthesis.... anabolism!!
Term
Whenever there is a energy transformation there is an increase in__________
Definition
entropy of the system
Term
Food molecule made up of energy rich macromolecule is an example of ____________ energy.
Definition
Chemical energy
Term
Why is ATP an important molecule in metabolism?
Definition
it provides energy coupling between exergonic and endergonic reactions
Term
The structure of ATP resembles a __________ molecule.
Definition
RNA nuecelotide
Term
What is the product of ATP hydrolysis?
Definition
ADP + P
Term
How can one increase the rate of chemical reaction?
Definition
by adding enzymes or a catylst
Term
Hydrolysis of sucrase by enzyme sucrose results in_______________.
Definition
breaking of old bonds of clucose and fructose and formation of new bonds from atoms of water.
Term
What is induced fit hypothesis?
Definition
It is the idea that the enzyme molecule changes shape when it encounters the substrate, so that it can bind the substrate more effectively - it "fits" around the substrate molecule.
Term
In cellular respiration, Glucose + Oxygen → carbon dioxide + water + ________. This is an example of _________reaction. In this reaction change in free energy will be ________. Photosynthesis is an example of __________ reaction, where change in free energy is_________.
Definition
In cellular respiration, Glucose + Oxygen → carbon dioxide + water + ENERGY. This is an example of EXERGONIC, SPONTANEOUS, CATOBOLIC reaction. In this reaction change in free energy will be NEGITIVE. Photosynthesis is an example of NONSPONTANOUS, ENDERGONIC, ANABOLIC reaction, where change in free energy is POSITIVE.
Term

This question is based on the reaction A + B → C + D shown in the Figure.

[image]

 

 

What is c and what is b in this figure?

 

Definition
Figure B is activation energy with enzymes
Figure C is activation energy without enzymes
Term
Describe 1st and 2nd law of thermodynamics?
Definition
First Law of Thermodynamics: Energy can be changed from one form to another, but it cannot be created or destroyed.
The Second Law of Thermodynamics states that "in all energy exchanges, if no energy enters or leaves the system, the potential energy of the state will always be less than that of the initial state." This is also commonly referred to as entropy.
Term
Why does the oxidation of organic compounds by molecular oxygen to produce CO2 and water release free energy?
Definition
carbon to oxygen.... carbon has low enfinity for electrons
Term
What is true about NAD+?
Definition
CO-Enzyme, Reduced to NADH in different stages of cellular respiration reduced in presents of enzyme dehydrogenous capture electron from glucose which is required for glycolsis
Term
Which molecules donate electrons for use in oxidative phosphorylation?
Definition
NADH and FADH2
Term
The ATP made during glycolysis and citric acid cycle is generated by ______________phosphorylation.
Definition
Substrate Level
Term
What are end products of glycolysis?
Definition
NADH, ATP, Pyruvic Acid
Term
In glycolysis how many molecules of ATP are used and how many are produced and as a result of this how many net ATPs are generated?
Definition
2 ATP, 4 ATP produced (NET OF 2)
Term
What kind of metabolic poison can stop the process of glycolysis?
Definition
anything where the agent closely mimics the structure of glucose but not metobized.
Term
What are the end products of pyruvic acid oxidation?
Definition
1. Acetyl CoA
2. CO2
3. NADH
4. Hydrogen
Term
Where is pyruvic acid synthesized? Where is Acetyl CoA synthesized?
Definition
Pyrivic Acid is in the chytoplasm
Acetyl CoA is in the Mitocondria Matrix
Term
Name the molecule that enters the citric acid cycle and is formed, in part, by the removal of a carbon (CO2) from one molecule of pyruvate?
Definition
Acetyl CoA
Term
Maximum amount of ATP is synthesized in ____________ and maximum amount of NADH is synthesized in__________.
Definition
Electron Trasport Chamber (etc) and Citric Acid Cycle
Term
How many molecules of NADH+ FADH2 is synthesized for oxidizing one molecule of glucose?
Definition
10 + 2= 12 molecules
Term
Define the terms catabolism.
Definition
the metabolic breakdown of complex molecules into simpler ones, often resulting in a release of energy
Term
Write down the downhill route of electrons in CR.
Definition
glucose or food-NAD+-NADH+etc+picked up by oxygen
Term
_______________________ is the direct source of energy that is used to convert ADP + P to ATP.
Definition
Movement of protons
Term
How is proton gradient generated in cellular respiration?
Definition
when dydrogen pumped from mitocondria matrix into intermembrane space
Term
It is possible to prepare vesicles from portions of the inner membrane of the mitochondrial components. Which process of cellular respiration could still be carried on by this isolated inner membrane?
Definition
etc (electron transport chain)
Term
Where does the Calvin cycle take place?
Definition
in the stroma of the chlorplast
Term
_______________ groups are always necessary in the ecosystem.
Definition
autotrophs
Term
Where are the molecules of ETC found in a plant cell?
Definition
Inner membrane of the mitochandria or Thylocoid membrane
Term
Where is ATP synthase located in a plant cell?
Definition
Inner membrane of the mitochandria or Thylocoid membrane
Term
______________ process results in the release of oxygen and ________ in the process of photosynthesis
Definition
Water splitting, electrons
Term
Some photosynthetic organisms contain chloroplasts that lack photosystem II, yet are able to survive. The best way to detect the lack of photosystem II in these organisms would be
Definition
to test for liberation of O2 in the light.
Term
Primary function of calvin cycle is _________.
Definition
synthesize simple sugars from carbon dioxide.
It uses ATP and NADPH made in the light stage to fix CO2.
Term
In photosynthesis glucose is required in which processes?
Definition
does not require glucose in any process!!
Term
Under aerobic conditions, NAD+ is recycled from NADH by transfer of electron to the__________. An anaerobic alternative is to transfer electrons from NADH to __________ and its derivative. In cellular respiration the final electron acceptor is __________. In fermentation the final electron acceptor is __________.
Definition
etc, pyrivc acid, oxygen and pyrvic acid
Term
In cellular respiration CO2 is produced during which processes ?
Definition
pyrivic acid oxidation & citric acid
Term
Glycolysis takes place in the___________. It can be divided into two phases:_________ __and ____________. At the end of glycolysis we get two __________ per glucose molecule. Glycolysis occurs whether or not ________ is present. At the end of glycolysis we get _____ number of ATP molecules.
Definition
Glycolysis takes place in the CYTOPLASM. It can be divided into two phases: ENERGY INVESTMENT and ENERGY PAYOFF. At the end of glycolysis we get two ATP OR PYROVATE per glucose molecule. Glycolysis occurs whether or not OXYGEN is present. At the end of glycolysis we get 2 number of ATP molecules.
Term
In fermentation the final electron acceptor is an organic molecule such as ___________(lactic acid fermentation) and ____________(alcohol fermentation). In aerobic respiration, by contrast, the final electron acceptor from NADH is _________. Final electron acceptor at the end of light reaction is _______.
Definition
In fermentation the final electron acceptor is an organic molecule such as PYRIVIC ACID (lactic acid fermentation) and ACIDAL DEHYDE(alcohol fermentation). In aerobic respiration, by contrast, the final electron acceptor from NADH is OXYGEN. Final electron acceptor at the end of light reaction is NADP+.
Term
Citric acid cycle takes place in__________. Acetyl CoA is produced at the end of _________, which takes place in___________. Oxidative phosphorylation takes place in ______________.
Definition
Citric acid cycle takes place in MITOCHONDRIA MATRIX. Acetyl CoA is produced at the end of PURIVIC ACID OXIDATION, which takes place in MITOCHONDRIA MATRIX. Oxidative phosphorylation takes place in ETC (MITOCHANDRIA MATRIX).
Term
Cellular Respiration Formula
Definition
[image]
Term
Photosynthesis Formula
Definition
[image]
Term
Equation For Photosynthesis
Definition
[image]
Term
Define the term anabolism.
Definition
the phase of metabolism in which simple substances are synthesized into the complex materials of living tissue
Term
Glycolysis takes place where and has a raw material of what?
Definition
Cytoplasm and glucose
Term
Pyruric acid oxidation takes place where and has a raw material of what?
Definition
Matrix and Pyruvic Acid
Term
Citric acid cycle take place where and has a raw material of what?
Definition
Matrix and Acetyl CoA
Term
ETC takes place where and has a raw material of what?
Definition
Inner membrane of the mitochondria and NADH, FADH2, O2
Term
Fermentation:
Definition
~Anaerobic process
~2ATP
~ATP produced through substrate level phosphorylation
~NAD+ recycled from NADH by pyruvate2 its derivative
~Final electron acceptor pyruvate
~no )2 or ETC present
~Takes place only in cytoplasm
Term
Cellular Respiration:
Definition
~Aerobic process
~32ATP
~ATP produced through substrate level 2 oxidation phosphorylation
~NAD+ recycled from NAHD by ETC
~Final e- acceptor O2
~O2, ETC present
~Takes place in both cytoplasm and mitochondria
Term
What is true about Catabolic processes.
Definition
Spontaneous, exergonic, no energy input required to start the process, net release of energy, Delta G always negitive, cellular respiration... catabolism!
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