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What step of respiration produces the most energy of the organism?
electron transport chain
What steps of respiration produces the most energy for the organism?
electron transport chain
What is the function of oxygen in aerobic repsiration?
Oxygen serves as an electron acceptor. When food is completely metabolised in the organism, it is decomposed to electrons, protons and CO2. The electrons are carried by NADH to mitochondria, to electron-transport chain. At the end of the electron transport chain, oxygen receives electrons, thus providing for maximal yield of energy carried by those electrons (in the electron-transport chain, they are used for pumping protons across the mitochondrial membrane, thus proton gradient which empowers ATPase, is maintained). At last, the ATPase enzyme produces ATP, the usable form of energy.
What are two differences between active transport and passive transport in terms of energy?
Active transport requires energy in the form of ATP to move molecules across the cell membrane against their concentration gradient, while passive transport does not require energy and relies on the concentration gradient to move molecules from an area of higher concentration to an area of lower concentration. Additionally, active transport can move molecules in both directions across the membrane, while passive transport can only move molecules down the concentration gradient.
What is facilitated transport?
Facilitated diffusion (or facilitated transport) is a process of diffusion, a form of passive transport facilitated by transport proteins. Facilitated diffusion is the spontaneous passage of molecules or ions across a biological membrane passing through specific transmembrane transport proteins. The facilitated diffusion may occur either across biological membranes or through aqueous compartments of an organism.
What step of respiration produces the most energy for the organism?
electron transport chain?
What step of respiration produces the most energy of the organism?
electron transport chain
What steps of respiration produces the most energy for the organism?
electron transport chain
What step of respiration produced the most energy for the organism?
electron transport chain
Oxygen is known as the "terminal electron receptor" in the electron transport chain. Suppose an organism lacks the ability to breathe in oxygen.What is the most likely effect an oxygen deficit would have on the electron transport chain in mitochondria?
Cyanide binds the electron transport chain at the level of complex IV
What does an organism take from the environment during aerobic respiration?
An organism takes in oxygen during aerobic respiration.
Why is it advisable to include an oxidase-positive control organism in any test of an unknown organism?
It's advisable so that the oxidase test determines whether or not an organism has cytochrome oxidase in its electron transport chain.
What is the function of oxygen in aerobic repsiration?
Oxygen serves as an electron acceptor. When food is completely metabolised in the organism, it is decomposed to electrons, protons and CO2. The electrons are carried by NADH to mitochondria, to electron-transport chain. At the end of the electron transport chain, oxygen receives electrons, thus providing for maximal yield of energy carried by those electrons (in the electron-transport chain, they are used for pumping protons across the mitochondrial membrane, thus proton gradient which empowers ATPase, is maintained). At last, the ATPase enzyme produces ATP, the usable form of energy.
What are two differences between active transport and passive transport in terms of energy?
Active transport requires energy in the form of ATP to move molecules across the cell membrane against their concentration gradient, while passive transport does not require energy and relies on the concentration gradient to move molecules from an area of higher concentration to an area of lower concentration. Additionally, active transport can move molecules in both directions across the membrane, while passive transport can only move molecules down the concentration gradient.
What is a organism with no membrane?
Eukaryote
Why does electron transport shut down if oxygen is not available?
Oxygen is the last electron acceptor in the electron transport chain of aerobic cellular respiration. During the process, it combines with the transported electrons and hydrogen ions, forming water as a waste product, which is then removed from the electron transport chain. In order to keep the electron transport chain going, a new oxygen molecule takes the place of the "used" oxygen, and will eventually also combine with electrons and hydrogen ions, and it continues like this as long as the organism lives. Without oxygen, the electron transport chain would stop due to the fact that the transported electrons and hydrogen ions would have nowhere to go, so the transport chain can no longer function, terminating the production of ATP.
What is facilitated transport?
Facilitated diffusion (or facilitated transport) is a process of diffusion, a form of passive transport facilitated by transport proteins. Facilitated diffusion is the spontaneous passage of molecules or ions across a biological membrane passing through specific transmembrane transport proteins. The facilitated diffusion may occur either across biological membranes or through aqueous compartments of an organism.
