Photosynthesis vs Respiration | BioNinja
Biology. Energy Processes - Photosynthesis & Cellular Respiration (Form B) .. The relationship between photosynthesis and cellular respiration is usually. Start studying IB Biology - Topic 8: Cell Respiration & Photosynthesis. Explain the relationship between the structure of the mitochondrion and its function. In many respects, photosynthesis and cell respiration are complementary reactions The products of photosynthesis function as the inputs of cell respiration.
Red and yellow B. Green and blue C. Red and green D. Red and blue Correct answer: D IB Exam Question 24 2. Explain photophosphorylation in terms of chemiosmosis. What is needed in photosynthesis to convert carbon dioxide into organic molecules? Light and hydrogen from the splitting of water B.
Light and oxygen from the splitting of water C. ATP and hydrogen from the splitting of water D.
IB Biology/Cell Respiration and Photosynthesis
ATP and oxygen from the splitting of water Correct answer: C IB Exam Question 26 4. Describe the reactions in the light independent part of photosynthesis.
Explain how the light-independent reactions of photosynthesis rely on light- dependent reactions. Describe the relationship between chloroplast structure and function. Explain the reasons for a shape of the thylakoid membranes in the chloroplast. Outline the effect of temperature, light intensity and carbon dioxide concentration on the rate of photosynthesis. IB Exam Question 31 9.
IB Biology Notes - Cell respiration
Explain three ways in which the rate of photosynthesis can be measured. Explain the reactions involving the use of light energy that occur in the thylakoids of the chloroplast.
IB Exam Question 33 Pigments are extracted from the leaves of a green plant. White light is then passed through the solution of pigments. What effect do the leaf pigments have on the white light? These steps normally occur in eukaryotic cells after glycolysis has been carried out. The 3-carbon end products of glycolysis, pyruvate, are the starting points for aerobic respiration.
Pyruvate first has its carboxyl group removed, creating CO2 gas as a waste product. The acetate is attached to coenzyme A to form the complex acetyl CoA. Acetyl CoA enters the mitochondrial matrix and is fed into the Krebs cycle.
In the first step of the Krebs cycle, Acetyl CoA gives its acetate away to combine with oxaloacetate, a C4 compound left over from the last cycle, to form citrate, a C6 compound. Coenzyme A exits the cycle to be recycled for further use.
The electron transport chain takes place in multiprotein complexes imbedded within the phospholipid bilayers of mitochondria's inner membranes. The flavoprotein then passes the electrons to ubiquinone Qwhich carry them to the first of many proteins in the cytochrome family that make up the rest of the electron transport chain.
FADH2 actually gives its two electrons to Q via an iron-sulfur proteinnot the flavoprotein. The last step in the electron transport chain is when cytochrome a3 gives the electrons to oxygen. Oxygen, then, is the final acceptor of electrons in the chain, and once it is reduced, it quickly picks up two hydrogen ions and forms water, a waste product of aerobic respiration. One of these points is the flavoprotein, before the electrons are handed off to Q.
The final stage of aerobic respiration is oxidative phosphorylation, which is made possible by the electron transport chain. Explain oxidative phosphorylation in terms of chemiosmosis.
IB biology: Cell respiration and photosynthesis by IB Notes on Prezi
The pumps are reduced, giving them energy to pump protons into the inner membrane space. The electrons are transferred along a chain of pumps, continuously losing energy.
Thus, protons diffuse back into the matrix through facilitated diffusion of ATP synthase channel protein and enzyme. As the protons pass along this protein channel, the kinetic energy of the protons causes the ATP synthase molecule to turn slightly, exposing active sites that create ATP by binding ADP with inorganic phosphate molecules.
The result is 36 ATP produced by oxidative phosphorylation. Explain the relationship between the structure of mitochondrion and its function. Mitochondrion have a large inner matrix, allowing for the Krebs cycle to occur.
After the Krebs Cycle is complete, the mitochondria has a fairly small inner membrane space where protons are pumped into. Due to its size, diffusion of protons back into the matrix occurs quickly, resulting in ATP produced at a faster rate.
The inner membrane contains many electron transport chains of proton pumps and ATP synthase enzymes, allowing for much ATP to be produced. The membranes are also structured to prevent the protons from diffusing though the membrane, forcing them to enter the matrix only through ATP synthase molecules.
Describe the central role of acetyl CoA in carbohydrate and fat metabolism. Both carbohydrate and fat metabolism is accomplished by splitting the molecules into 2 carbon structures.
These structures are then attached to Coenzyme A, creating Acetyl CoA and allowing the molecules to pass into the inner matrix of the mitochondrion in order to complete the Krebs Cycle and chemiosmosis. Draw the structure of a chloroplast as seen in electron micrographs Chloroplast - 5 picometers State that photosynthesis consists of light-dependent and light-independent reactions.
Light strikes on an antenna pigment in a thylakoid within a chloroplast in Photosystem 2. The chlorophyll pigments in the thylakoid absorb light energy, raising electrons to a higher energy level. The energy is passed along antenna pigments until it reaches a P molecule. The energy excites an electron on the P molecule which is transferred to the reaction center and electron transport chain. To replace the lost electron, an electron is taken from the photolysis of water, creating O2 as a byproduct.Cellular Respiration Part 1 Intro IB Biology (SL)