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Why do biological reactions have a high activation energy and Why?
Biological reactions often have a high activation energy because they involve complex molecules and reactions that require a significant input of energy to overcome the initial energy barrier. This high activation energy helps regulate the rate of biological reactions and ensures that they proceed only when necessary for the cell or organism.
Complex metabolic reactions proceed in a series of steps called?
Complex metabolic reactions proceed in a series of steps called metabolic pathways. These pathways involve a sequence of enzymatic reactions that transform substrates into products, ultimately contributing to the overall metabolism of an organism. Each step in a metabolic pathway is tightly regulated and often linked to other pathways within the cell.
Do metabolic reactions occur in isolation?
Metabolic reactions do not occur in isolation, as they are interconnected and form complex metabolic pathways within cells. These pathways involve a series of reactions that are tightly regulated and coordinated to maintain cellular function and energy balance. The products of one reaction often serve as substrates for the next, allowing for efficient energy production and utilization.
Chains of enzyme reactions in a Cell that regulate enzyme activity and energy flow are known as?
Metabolic pathways. These pathways involve a series of enzyme-catalyzed reactions that help regulate the flow of energy and molecules within a cell. Each step in a metabolic pathway is carefully controlled to ensure proper functioning and homeostasis in the cell.
Is activation energy for thermal and photochemical reactions same?
The definition of the activation energy is exactly the same -- the thermodynamic energy barrier that the reactant must pass over to convert to products. The difference between a thermal and a photochemical reaction is only where the reactants get the energy to get over this barrier. In a thermal reaction, that energy is given by the temperature, and is carried in excited rotational modes, higher kinetic energies and if hot enough, excited vibrational states. In a photochemical reaction, the activation energy is provided by photons, usually in the form of electronic excited states, but could also be vibrational or rotational. The concept of the activation barrier is identical in both cases.
Why do biological reactions have a high activation energy and Why?
Biological reactions often have a high activation energy because they involve complex molecules and reactions that require a significant input of energy to overcome the initial energy barrier. This high activation energy helps regulate the rate of biological reactions and ensures that they proceed only when necessary for the cell or organism.
Complex metabolic reactions proceed in a series of steps called?
Complex metabolic reactions proceed in a series of steps called metabolic pathways. These pathways involve a sequence of enzymatic reactions that transform substrates into products, ultimately contributing to the overall metabolism of an organism. Each step in a metabolic pathway is tightly regulated and often linked to other pathways within the cell.
Do metabolic reactions occur in isolation?
Metabolic reactions do not occur in isolation, as they are interconnected and form complex metabolic pathways within cells. These pathways involve a series of reactions that are tightly regulated and coordinated to maintain cellular function and energy balance. The products of one reaction often serve as substrates for the next, allowing for efficient energy production and utilization.
Chains of enzyme reactions in a Cell that regulate enzyme activity and energy flow are known as?
Metabolic pathways. These pathways involve a series of enzyme-catalyzed reactions that help regulate the flow of energy and molecules within a cell. Each step in a metabolic pathway is carefully controlled to ensure proper functioning and homeostasis in the cell.
Is activation energy for thermal and photochemical reactions same?
The definition of the activation energy is exactly the same -- the thermodynamic energy barrier that the reactant must pass over to convert to products. The difference between a thermal and a photochemical reaction is only where the reactants get the energy to get over this barrier. In a thermal reaction, that energy is given by the temperature, and is carried in excited rotational modes, higher kinetic energies and if hot enough, excited vibrational states. In a photochemical reaction, the activation energy is provided by photons, usually in the form of electronic excited states, but could also be vibrational or rotational. The concept of the activation barrier is identical in both cases.
Why do chemical reactions always involve a change in energy?
Chemical reactions involve the breaking and formation of bonds between atoms, which requires energy. The energy change in a reaction is needed to overcome the activation energy barrier and initiate the process. This change in energy is essential for the rearrangement of atoms and the formation of new substances.
Do cells have the capability of synthesizing water during metabolism?
Many metabolic processes involve condensation reactions, a type of reaction forming new bonds that produces water as a "waste product".
What are energy yielding reactions called?
Energy yielding reactions are called catabolic reactions. These reactions involve breaking down complex molecules into simpler ones, releasing energy in the process. Common examples include glycolysis, the citric acid cycle, and oxidative phosphorylation.
What is metabolic reaction that break down molecules?
The metabolic reactions that break down molecules are known as catabolic reactions. These processes involve the breakdown of complex molecules into simpler ones, releasing energy that can be used by the body. Examples include glycolysis, where glucose is broken down to produce energy, and the citric acid cycle, which further oxidizes these products. Overall, catabolic reactions are essential for providing the energy needed for various cellular functions.
Do chemical reactions have starting substances that collide with each other?
Yes, chemical reactions typically involve reactant molecules colliding with each other in order to undergo a change in chemical structure. These collisions provide the necessary activation energy for the reaction to proceed.
Chains of chemical reactions in living organisms are called?
Metabolic pathways. These pathways involve a series of interconnected chemical reactions that convert molecules into energy or create necessary building blocks for the organism. Each step is catalyzed by specific enzymes to maintain a balance of energy and essential molecules in the organism.
Which hormone is called the metabolic hormone?
thyroxine.It controls mainly basal metabolic rate. Other hormones also involve in metabolic rate control
