4. How do enzymes affect the speed of a chemical reaction?

Enzymes are catalysts, meaning that they lower the activation energy. Lower activation energy allows for a faster process so enzymes speed up chemical reactions.

Explanation:

Enzymes are usually proteins that act on molecules called substrates and bind to a region of the enzyme, called the active site. This is the site where catalytic function occurs. The catalytic function is to reduce the activation energy necessary to start biochemical reactions, allowing the formation of a product to be quicker.

ans.

gregor john mendel is known for study of inheritance in pea plants. he used garden pea plant for his study, having alternative traits for various characters. he performed cross-breeding in pea plants to check how characters are transmitted between parents to offspring, such as cross between pure tall and pure dwarf plant. mendel studied the inheritance patterns in pea plants for various generations.

thus, the correct answer includes options and f).