Enzymes speed up reactions by
Araising the concentration of substrate inside the cell
Blowering the activation energy of the reaction
Cproviding reaction energy directly
Dmaking the products less stable
Answer & Solution
Correct answer: B. lowering the activation energy of the reaction
An enzyme reduces the activation-energy barrier by holding substrates in a favourable geometry and stabilising the transition state. The enzyme itself is unchanged. Substrate concentration is set by the cell, not the enzyme; reactions don't get energy 'from' the enzyme; product stability depends on the reaction, not the catalyst.
Related questions
In the DNA double helix adenine pairs with:Nucleotides in a chain are joined by which linkage?A base attached to a sugar without phosphate is called a:Which base occurs in RNA but not in DNA?The sugar found in a DNA molecule is:Water soluble vitamins must be eaten regularly because they are:Which set of vitamins is fat soluble?Enzymes speed a reaction by lowering its: