Designing a cell - Biomolecules

In biological systems, hydrolysis is primarily used to:

• Join monomers to form polymers

• Break down polymers into monomers

• Remove water from a reaction

• Facilitate energy storage in cells

Which class(es) of biomolecules TYPICALLY contain phosphorus in their structure?

• Nucleic acids and certain lipids

• Carbohydrates and proteins

• Steroids and simple sugars

• Saturated and unsaturated fats

The hydrophobic tails of phospholipids in the plasma membrane are oriented:

• Facing the cytoplasm and extracellular space

• Facing each other inside the bilayer

• Alternating with protein channels

• Randomly in both directions

Why can humans digest starch but not cellulose?

• Starch contains only β-glucose, cellulose contains α-glucose

• Starch contains α-glucose, cellulose contains β-glucose and we lack the enzyme to break β-1,4 bonds

• Starch is insoluble, cellulose is soluble

• Cellulose contains peptide bonds

Which of the following is not a component of a nucleotide?

• Nitrogenous base

• Pentose sugar

• Phosphate group

• Amino group

This biomolecule would be used for

• Building enzymes
• Storing energy
• Key source of energy
• Storing genetic information

Bee's wax would be categorized as this type of biomolecule.

• Carbohydrate

• Lipid

• Protein

• Nucleic Acid

Which of the following polymer is stored in the liver of animals? animals?

• Amylose

• Cellulose

• Amylopectin

• Glycogen

Identify the molecule

• Nucleotide

• Nucleoside

• Nucleic acid

• RNA

Identify the molecule

• CTP

• ATP

• dATP

• ADP