Biology Honors Midterm Review

Front

In osmosis, water always moves toward the _____________ solution.

Back

hypertonic solution, that is, toward the solution with the greater solute concentration.

Front

Name this functional group: NH2

Back

Amino group.

Front

Which of the following statements about enzymes is NOT true?

Back

Enzymes increase activation energy a lot.

Front

What is the most significant difference between mitosis and meiosis?

Back

Homologous pairs of chromosomes are split up in meiosis.

Front

Define diffusion.

Back

The movement of molecules from an area of high solute concentration to an area of low solute concentration.

Front

What is the function of enzymes in biological reactions?

Back

Enzymes act as biological catalysts that speed up reactions by lowering activation energy.

Front

What is a hypertonic solution?

Back

A solution with a higher concentration of solutes compared to another solution.

Front

What is the role of the carboxyl group in organic molecules?

Back

The carboxyl group (-COOH) acts as an acid, donating protons in chemical reactions.

Front

What occurs during crossing over in meiosis?

Back

Homologous chromosomes exchange genetic material, increasing genetic diversity.

Front

What is the difference between active transport and passive transport?

Back

Active transport requires energy to move substances against their concentration gradient, while passive transport does not.