Honors Biology Chapter 2 Review

What is the most important reason why chemistry is important to biology?

• Chemistry helps us understand the chemical reactions that occur in living organisms.

• Chemistry helps us understand the structure and function of cells.

• Chemistry helps us understand the genetic code and inheritance.

• Chemistry helps us understand the diversity of species and ecosystems.

Tags

NGSS.HS-LS1-1

NGSS.HS-LS2-5

NGSS.HS-LS1-6

Which of the following elements are considered major elements in biology?

• Chlorine, Sodium, Phosphorus, Sulfur

• Carbon, Hydrogen, Oxygen, Nitrogen

• Iodine, Iron, Fluorine

• Calcium, Potassium, Magnesium

What is the purpose(s) of using radioisotopes in biological settings?

• To kill bacteria and other microorganisms

• To track diseases within the body

• To diagnose and treat medical conditions

• To generate nuclear energy

What type of bonding occurs when electrons are shared between atoms?

• Ionic bonding

• Covalent bonding

• Hydrogen bonding

• Metallic bonding

What property of water allows it to create a film and act like a membrane for cells?

• Adhesion

• Surface tension

• High specific heat

• Evaporative cooling

Tags

NGSS.HS-ESS2-5

NGSS.HS-LS2-5

What property of water helps to moderate temperature in organisms and maintain a constant ocean temperature?

• Cohesion

• Surface tension

• High specific heat

• Evaporative cooling

Tags

NGSS.HS-ESS2-5

What property of water allows it to dissolve ions and molecules?

• Cohesion

• Adhesion

• Capillary action

• Universal solvent

Tags

NGSS.HS-ESS2-5

What is the pH range for acids?

• Below 7

• Above 7

• Exactly 7

• Between 6 and 8

What is the purpose of buffers in biological systems?

• To increase the pH of a solution

• To decrease the pH of a solution

• To maintain a homeostatic pH

• To neutralize acids and bases

Tags

NGSS.HS-LS1-3

The atomic number of carbon is 6, the atomic mass is 12. How many protons does carbon have?

• 6

• 12

• 24

• 1