Lecture Quiz #01

Question 1

Name the macromolecule to the following:

• amino acids
• sugar
• fatty acids
• nucleotides

Answer 1

• protein
• carbohydrates
• lipids
• nucleic acids

Question 2

What are the types of chemical bonds and their description?

Answer 2

• Covalent bond: sharing of electron pairs between atoms (strong)
• Ionic bond: one atom gives up one or more electrons to another atom (strong)
• Hydrogen bond: electrostatic attraction between Hydrogen and another atom

Question 3

What are the subatomic particles of an atom? Where are they located? What charge do they have?

Answer 3

• Electron: located in the shell (neg. charge)
• Proton: located in the nucleus (pos. charge)
• Neutron: located in the nucleus (neutral charge)

Question 4

What is the atomic number of Sodium? What is its symbol? What’s its charge?

Answer 4

• Number: 11
• Symbol: Na
• Charge: ( + )

Question 5

What is the atomic number for Chloride? What is its symbol? What’s its charge?

Answer 5

• Number: 17
• Symbol: Cl
• Charge: ( – )

Question 6

What is the atomic number for Hydrogen? What is its symbol? What’s its charge?

Answer 6

• Number: 1
• Symbol: H
• Charge: ( + )

Question 7

What is the atomic number for Oxygen? What is its symbol? What’s its charge?

Answer 7

• Number: 8
• Symbol: O
• Charge: ( – )