Module 2 practice: Biomolecules and Cells

A type of chemical reaction where a large molecule (ex: polymer) is broken into smaller molecules (ex: monomers).

• Hydrolysis
• Oxidation
• Dehydration synthesis

• Condensation

Match the monomer with the class of macromolecules

• Amino acids

• Proteins

• Fatty acids

• Lipids

• Monosaccharides

• Nucleic Acids

• Nucleotides

• Carbohydrates

There are 20 different amino acids. What makes each amino acid unique?

• Number of hydrogen atoms
• Number of carbon atoms
• Side chain or R group
• Amino group

Sort the molecules into the correct categories.

Groups:

(a) Carbohydrates

,

(b) Lipids

,

(c) Proteins

,

(d) Nucleic acids

• Glucose

• DNA

• Steroids

• Glycogen

• Cholesterol

• Insulin

• Enzymes

• Triglycerides

• RNA

• Cellulose

What carbohydrate is acts as short-term energy storage in animal cells?

• Starch
• Fructose
• Cellulose
• Glycogen

What carbohydrate is a polysaccharide that build plant cell walls?

• Starch
• Fructose
• Cellulose
• Glycogen

Organize each statement as describing saturated or unsaturated fats

Groups:

(a) Saturated fat

,

(b) Unsaturated fate

• Double bonds

• Straight hydrocarbon chains

• Solid at room temp

• Bent hydrocarbon chains

• Liquid at room temp

• Single bonds only

What cell structures are present in ALL types of cells? Select ALL correct answers.

• Cytosol

• Mitochondria

• Plasma membrane

• Cytoskeletal elements

• Nucleus

What kinds of cells have cytoskeleton? Select ALL correct answers.

• Animal cells

• Plant cells

• Prokaryotes

• Eukaryotes

Answer explanation

Cytoskeleton is one of the elements that are in ALL types of cells.

Elements in all cells:

>Cytoskeleton

>Plasma membrane

>Cytoplasm/cytosol

>DNA

What organelle modifies proteins and lipids, and then sends them to their final destination?

• Nucleus
• Mitochondria
• Golgi apparatus
• Endoplasmic reticulum