Molecules of Life, Cells Week 2

Question 1

What characteristics do all living organisms share?

Answer 1

1. Cells: all Organisms are made up of membrane-bound cells
2. Replication: All organisms are capable of reproduction
3. Evolution: Populations of organisms are continually evolving

Question 2

What are the basic building blocks of organisms

Answer 2

• Carbohydrates
• Proteins
• Nucleic Acid
• Lipid

Question 3

96% of living matter is made up of…

Answer 3

Hydrogen, carbon, oxygen and nitrogen

Question 4

Polar protein peptide chains does not dissolve in water. (true or false)

Answer 4

False

Question 5

Amino acids are joined by peptide bonds (T or F)

Answer 5

True

Question 6

In what order are peptide chains written?

Answer 6

From N-terminus to C-terminus

Question 7

What are the 4 levels of Protein Structure

Answer 7

Primary, secondary, tertiary and quaternary structure

Question 8

Describe primary structure of protein

Answer 8

Primary structure is linked by peptide bond of amino acids through condensation reactions

Question 9

Describe Secondary structure of protein

Answer 9

• secondary structure is due to hydrogen bonding between backbone atoms
• affects shape and function

Question 10

Describe tertiary structure

Answer 10

• involves folding due to R group interactions