Macromolecules, Enzymes, and Properties of Water

What elements are found in all biological macromolecules?

• Carbon, Hydrogen, Oxygen, and Nitrogen

• Carbon, Hydrogen, Oxygen, and Phosphorus

• Carbon, Hydrogen, Oxygen, and Sulfur

• Carbon, Hydrogen, Oxygen, and Calcium

Which of the following is a function of macromolecules?

• Energy storage

• Genetic information storage

• Catalyzing biochemical reactions

• All of the above

Tags

NGSS.HS-LS2-5

What is an enzyme?

• A type of protein that speeds up chemical reactions

• A type of carbohydrate that stores energy

• A type of lipid that forms cell membranes

• A type of nucleic acid that stores genetic information

When enzymes are not at a stable pH or temperature, what happens to their reaction rate?

• The reaction rate increases significantly.

• The reaction rate decreases or stops.

• The reaction rate remains unchanged.

• The reaction rate becomes unpredictable.

What do enzymes do in the human body?

• They provide energy to cells.

• They act as catalysts to speed up chemical reactions.

• They store genetic information.

• They transport oxygen in the blood.

Tags

NGSS.HS-LS2-3

How do enzymes benefit chemical reactions? Based on the energy diagram below.

• They increase the activation energy required.

• They decrease the activation energy required.

• They do not affect the activation energy.

• They increase the overall energy of the reaction.

Tags

NGSS.HS-PS1-4

Why is water the most important substance for sustaining life on Earth?

• It is a universal solvent.

• It is abundant on Earth.

• It regulates temperature.

• All of the above.

Tags

NGSS.HS-ESS2-5

Which property of water allows for it to help blood carry nutrients and gases required for survival?

• Cohesion

• Adhesion

• High specific heat

• Solvent properties

The part of the enzyme where the substrate binds is called the:

• Active site

• Binding pocket

• Catalytic core

• Reaction zone

What property of water allows water to move from the roots to the leaves of a plant?

• Cohesion

• Adhesion

• Capillary action

• Surface tension

Tags

NGSS.HS-ESS2-5