The Chemical Basis of Life Bio chapter 2

What molecule is depicted in the diagram from Chapter 2 - The Chemical Basis of Life?

• Carbon dioxide

• Water

• Methane

• Oxygen

Which of the following is NOT a component of the atomic model as mentioned in Chapter 2?

• Protons

• Neutrons

• Electrons

• Photons

What type of chemical bond is not listed under the chemical bonds section in Chapter 2?

• Covalent

• Ionic

• Metallic

• Hydrogen

According to Chapter 2, which of the following is not discussed as a main topic?

• The Water Molecule

• Acids & Bases

• Cellular Respiration

• Elements

How many emergent properties of water are discussed in Chapter 2?

• Two

• Three

• Four

• Five

What is an element in the context of chemical composition of organisms?

• A type of compound

• A mixture of different substances

• A substance that can be broken down into simpler substances by chemical reactions

• A substance that cannot be broken down by ordinary chemical reactions

What defines a compound?

• A substance that can be separated by physical means

• A substance consisting of two or more different elements combined in a fixed ratio

• A single element that can exist in different forms

• A mixture of elements that can vary in their proportions

What is formed when the elements sodium (Na) and chlorine (Cl) react together?

• Sodium nitrate (NaNO3)

• Chlorine gas (Cl2)

• Sodium chloride (NaCl)

• Hydrochloric acid (HCl)

Which property of sodium chloride (NaCl) is an example of an emergent property?

• The toxicity of chlorine

• The metallic nature of sodium

• The formation of a crystalline structure

• The liquid state of chlorine at room temperature

What percentage of most living organisms' weight is made up by oxygen?

• 65%

• 18.5%

• 9.5%

• 3.3%