Problem: Select the INCORRECT association:A. carbohydrates... used by the body for energyB. lipids... serve to insulate, protect, and store energyC. proteins... have 3 forms: monosaccharides, disaccharide, and polysaccharidesD. nucleic acids... include DNA and RNA which control our genetic inheritance

FREE Expert Solution

Four Classes of Biomolecules: 

Biomolecules

Components

Examples

Functions

Carbohydrates

 

Monosaccharides: glucose, fructose

Fuel, building blocks for other polymers

Disaccharides: lactose, sucrose

Polysaccharides:

• Cellulose

• Starch

• Glycogen

• Chitin


Fuel storage, structural component of cell walls and exoskeletons

Lipids

Triacylglycerols: glycerol + 3 fatty acids

Fuel

Phospholipids: phosphate group + 2 fatty acids

Component of cell bilayers

Steroids: four fused rings with attached chemical groups

Component of cell mebranes, signaling molecules (hormones)

Proteins

• Enzymes

• Structural proteins

• Storage proteins

• Transport proteins

• Hormones

• Receptor proteins

• Motor proteins

• Defensive proteins

• Catalyze chemical reactions

• Provide structural support

• Store amino acids

• Transport substances

• Coordinate organismal responses

• Receive signals from outside cell

• Function in cell movement

• Protect against disease

Nucleic Acids

DNA:

• Sugar = deoxyribose

• Nitrogenous bases = C, G, A, T

• Usually double-stranded

Stores hereditary information

RNA:

• Sugar = ribose

• Nitrogenous bases = C, G, A, U

• Usually single-stranded

Various functions during gene expression, including carrying instructions from DNA to ribosomes

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Problem Details

Select the INCORRECT association:

A. carbohydrates... used by the body for energy

B. lipids... serve to insulate, protect, and store energy

C. proteins... have 3 forms: monosaccharides, disaccharide, and polysaccharides

D. nucleic acids... include DNA and RNA which control our genetic inheritance

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