Which of the following characteristics are true of enzymes? Check all that apply.

The structure of an enzyme can change if conditions change.

A single enzyme can normally catalyze a wide variety of reactions under many conditions

Enzymes are found only in nonliving systems.

2 Enzymes allow living things to regulate body conditions through feedback mechanisms.

Enzymes bind to specific substrates in specific ways.

Enzymes increase the rate of reaction.

When shown in energy-reaction diagrams, enzymes represent the higher activation energy.

The structure

Enzymes allow

Enzymes blind

Emzymes increase

Explanation:

answer: option (b) is the correct answer.

explanation:

a covalent bond is formed by sharing of electrons. whereas polarity arises due to difference in electronegativity of two atoms.

therefore, more is the electronegativity of an atom which combines with the titanium, more readily it will induce a partial positive and negative charge.

thus, out of the given options fluorine is most electronegative and has an incomplete octet. therefore, it will readily combine with titanium to share the electrons and complete its octet.  

geosphere and hydrosphere.

this is because the geosphere has to do with geological events, while the hydrosphere controls all water on earth.