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Which statement best explains how enzymes speed up chemical reactions?
Enzymes speed up chemical reactions by lowering the activation energy needed for the reaction to occur. This allows the reaction to happen more quickly, as enzymes provide an alternative pathway with a lower energy barrier for the reaction to proceed. Ultimately, enzymes help substrates to reach the transition state more easily, facilitating the reaction.
What statement best describes the role of enzyme?
Enzymes act as biological catalysts that speed up chemical reactions by lowering the activation energy required for the reaction to occur. They are specific in their function, recognizing only particular substrates, and they are not consumed or changed during the reaction. This allows them to be used repeatedly in cellular processes.
What is the best oxidizing agent for chemical reactions?
The best oxidizing agent for chemical reactions is typically oxygen gas (O2) because it is highly reactive and readily accepts electrons from other substances.
What best describes a valence electrons?
Valence electrons are the outermost electrons in an atom that are involved in forming chemical bonds with other atoms. They determine the atom's reactivity and ability to form compounds. The number of valence electrons can also be used to predict an element's chemical properties.
Which statement best describes the use of a catalyst in a fuel cell?
A catalyst in a fuel cell speeds up the chemical reactions that convert fuel and oxygen into electricity, without being consumed in the process. It lowers the activation energy required for the reactions to occur, increasing the efficiency of the fuel cell.
What term best describes the shape of an enzyme?
The term that best describes the shape of an enzyme is "three-dimensional." Enzymes have a specific three-dimensional shape that is crucial for their function in catalyzing biochemical reactions. This shape allows enzymes to bind to specific substrates and facilitate chemical reactions.
Which statement best explains how enzymes speed up chemical reactions?
Enzymes speed up chemical reactions by lowering the activation energy needed for the reaction to occur. This allows the reaction to happen more quickly, as enzymes provide an alternative pathway with a lower energy barrier for the reaction to proceed. Ultimately, enzymes help substrates to reach the transition state more easily, facilitating the reaction.
Why are enzymes needed to control chemical reactions with cells?
enzymes are needed to control chemical reactions within cells because the enzymes acts like catalysts. They basically speed up the reactions within the body, and within the cells, so there fore they help the body maintain its internal environment (homeostasis).-Grade 12 Bio student(exact question came on a handout :P)
Is it true that lowering the temperature slows down most chemical reactions?
most chemical reactions dealing with enzymes preform best in a certain small temperature range, so increased or decreased temperatures could result in the slowing down of reactions
All cells of an organism are engaged in many different chemical reactions This fact is best supported by the presence in each cell of thousands of different kinds of?
Enzymes. Enzymes are catalysts that facilitate and regulate thousands of different chemical reactions within cells by speeding up these reactions without being consumed in the process. The diversity of enzymes in each cell reflects the wide array of biochemical pathways that cells must carry out to maintain life processes.
Best explains how enzymes speed up chemical reactions?
Enzymes speed up chemical reactions by lowering the activation energy required for the reaction to occur. They do this by bringing the reacting molecules closer together and providing an alternative pathway for the reaction to follow. This allows the reaction to proceed more quickly and efficiently than it would without the enzyme.
Which term best describes lactase?
Enzymes
What is a statement that best describes an enzyme?
Enzymes are biological molecules that act as catalysts to increase the rate of chemical reactions in living organisms by lowering the activation energy needed for the reaction to occur. They are specific in their function and often end in "-ase".
Question 42All cells of an organism are engaged in many different chemical reactions This fact is best supported by the presence in each cell of thousands of different kinds of what?
Enzymes
Which sentence best describes how water helps living things generate energy?
Chemical reactions within cells take place in the presence of water.
What best describes chemical equilibrium a reactions have stopped b reactions continue with no effect on the concentration of reactant and products c reactions stop only when a?
B. Reactions continue with no effect on the concentration of reactant and products. Chemical equilibrium occurs when the rate of the forward reaction is equal to the rate of the reverse reaction, leading to a constant concentration of reactants and products.
What statement best describes the role of enzyme?
Enzymes act as biological catalysts that speed up chemical reactions by lowering the activation energy required for the reaction to occur. They are specific in their function, recognizing only particular substrates, and they are not consumed or changed during the reaction. This allows them to be used repeatedly in cellular processes.
