Molecules derived from the breakdown of fats, proteins, and carbohydrates can enter glycolysis or the Krebs cycle at various points in order to yield more energy to an organism. Part A How does oxygen get into or out of chloro- plasts and mitochondria? Part B What are the roles of oxygen in the processes of photosynthesis and cellular respiration, and how are the roles similar? Make sure you get plenty of rest the night before the test
The electron transport system transfers protons from the inner compartment to the outer; as the protons flow back to the inner compartment, the energy of their movement is used to add phosphate to ADP, forming ATP. Water flows across the respiratory surface of the gill in one direction while blood flows in the other direction through the blood vessels on the other side of the surface
The CK-12 Life Science Concept Collection presents life science as a set of 12 chapters, each centered around a general area of study, such as cell biology or human biology
Electron Transport Chain and Oxidative Phosphorylation In the electron transport chain, which in animal cells is located mostly on the inner membranes of mitochondria, reduced products such as NADH and FADH2 are used to create a proton gradient -- an imbalance in the concentration of unpaired hydrogen atoms on one side of the membrane vs. Cellular respiration, on the other hand, involves taking electrons away from a substrate (glucose, for instance), which is to say oxidation, and in the process the substrate is degraded so that its carbon atoms are released as CO2, while oxygen is consumed
In a series of aerobic reactions, lactate is converted to pyruvate, which enters the mitochondrion and combines with oxygen to form an acetyl group, releasing carbon dioxide. During this series of reactions, each acetyl group is oxidized to form two molecules of carbon dioxide, and the energy released is transferred to four electron carrier molecules
While the molecules are being rearranged in this cycle, carbon dioxide is produced, and electrons are pulled off and passed into an electron transport system which, just as in photosynthesis, generates a lot of ATP for the plant to use for growth and reproduction. They conserve water a lot better than we do.Can plants live without animals? Can animals live without plants?Thanks for asking.Click Here to return to the search form
cell's cytoplasm divides the cell's nucleus divides into 2 new nuclei Under which of the following conditions is lactic-acid fermentation most likely to occur? a
2011 cellular respiration
How is the alveoli adapted for its function? Feature Function Numerous alveoli Large SA for gas exchange Thin walls of alveoli Rapid diffusion of gases Thin film of moisture Oxygen can dissolve Dense capillary network Rapid and efficient gas exchange 70. Kills brain cells Figure 10.8 page 202 Figure 10.8 page 202 Figure 10.8 page 202 Figure 10.8 page 202 Figure 10.8 page 202 Figure 10.8 page 202 Figure 10.8 page 202 Figure 10.8 page 202 Figure 10.8 page 202 TIBBLAD Carbonic acid is an intermediate step in the transport of CO 2 out of the body via respiratory gas exchange
Where Does Plant Respiration Take Place? Does Cell Respiration Only Take Place in Plant Cells? Cellular respiration is a metabolic process essential to the functioning of all cells. The cell makes a tiny amount of ATP during glycosis, but the primary reason for this step is the creation of intermediary chemical substances from glucose
The inner membrane of the mitochondrion is the site of electron transport and chemiosmosis, processes that together constitute oxidative phosphorylation. The proton-motive force generated by the redox reactions of respiration may drive other kinds of work, such as mitochondrial uptake of pyruvate from the cytosol
Aerobic Cellular Respiration
The objective in this process is to break down glucose and form ATP, NADH and pyruvates (pyruvates or pyruvic acid is the end product of glycolysis, which can be converted to different biomolecules). A point worth mentioning here is, while glycolysis takes place in the cytoplasm of a cell, the Krebs Cycle and electron transport takes place in the mitochondria of a cell
Flashcards - Cellular Respiration
Lactic acid fermentation In cellular respiration, cells use oxygen to break down the sugar glucoseand store its energy in molecules of adenosine triphosphate 1. Many cells also can metabolize pyruvate if oxygen is not present, via the process of: fermentation The net result of the breakdown of glucose in glycolysis and fermentation is the production of: 2 Which stage of aerobic respiration requires ATP? glycolysis
Aerobic and Anaerobic Respiration
When a glucose molecule is broken down in the presence of oxygen, energy is released, along with carbon dioxide and water as the by-products of the reaction. Krebs Cycle: In this stage, unused carbon molecules are used to initiate another series of chemical reactions to produce more NADH molecules, and another molecule known as FADH2
Cell Respiration: Introduction
Since most textbooks provide abundant details of the chemical reactions in respiration, this tutorial will focus on how the chemical energy in glucose is converted into ATP and where respiration occurs in the cell. Carbohydrates, fats, and proteins can all be used as fuels in cellular respiration, but glucose is most commonly used as an example to examine the reactions and pathways involved
anaerobic How many total ATP molecules are produced by 1 molecule of glucose completing cellular respiration ? 2 6 24 36 WHICH OF THE FOLLOWING ARE PRODUCED DURING THE KREBS CYCLE? A
Cellular Respiration
Because there are a number of enzymes and steps involved in forming porphyrin rings, there are a number of possible points in the process where genetic defects could occur. Out of many possible types of fermentation processes, two of the most common types are lactic acid fermentation and alcohol fermentation (other types of fermentation such as methanol fermentation and acetone fermentation also exist)
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