Question

question 1 - 4
the following table shows the composition, uses, and examples of four molecules.

	molecule 1	molecule 2	molecule 3	molecule 4
example	a	glucose	steroid	d
uses	heredity information	b	energy storage	reaction regulation, transport, movement

which of the following correctly completes the table?
a = dna or rna, b = cell fuel and support
a = dna or rna, b = cell fuel and support, c = galactose and glycogen, d = nucleic acids and fatty acids
a = fructose and lipids, b = cell control and fuel, c = fatty acids and glycerol, d = hemoglobin and amylase
a = hemoglobin and amylase, b = cell control and reproduction, c = deoxyribose and ribose, d = nucleotides and myosin

Explanation:

Molecule 1 has monomers of nucleotide (sugar - phosphate and nitrogen - base) and is used for heredity information, which are characteristics of DNA or RNA. Molecule 2 with monomer monosaccharides and example glucose is used as cell fuel and support. Molecule 3 with example steroid is a lipid, and lipids are made of fatty acids and glycerol for energy storage. Molecule 4 with amino and carboxyl groups are proteins, and hemoglobin and amylase are proteins used in reaction regulation, transport, movement etc.

Answer:

A. A = DNA or RNA, B = cell fuel and support, C = fatty acids and glycerol, D = hemoglobin and amylase