Question

question 4
what are compounds that have the same molecular formulas but different structures and different molecules?
isotope
isomer
monomer
amino acid

question 5
what substance is removed during a condensation reaction?
polymer
carboxyl group
hydrocarbon
water

question 6
what carbohydrate energy storage molecule is found in animal liver and muscle cells?
glycogen
cellulose
glucose
starch

Explanation:

• Question 4: Isomers have the same molecular formula but different structures. Isotopes are variants of an element with different numbers of neutrons, monomers are the building - blocks of polymers, and amino acids are the building - blocks of proteins.
• Question 5: In a condensation reaction, water is removed as a by - product when two molecules combine to form a larger molecule.
• Question 6: Glycogen is the carbohydrate energy storage molecule in animal liver and muscle cells. Cellulose is a structural carbohydrate in plants, glucose is a monosaccharide and a source of energy, and starch is the energy storage carbohydrate in plants.

Answer:

Question 4: B. Isomer
Question 5: D. Water
Question 6: A. Glycogen