Biomolecule

The DNA chain sequence, CCGTAA, has a complementary base sequence equal to         .

• GCATA

• GGCATT

• GGCTAA

• CCGATT

What is the major function of carbohydrates?

• structural framework

• storage

• genetic information

• energy production

Amino acids are the building blocks of which group of biomolecules?

• carbohydrate

• lipid

• nucleic acid

• protein

Lipids are insoluble in water because lipid molecules are                 .

• hydrophilic

• hydrophobic

• neutral

• cannot be determined

Which of the following groups are all classified as polysaccharide?

• monosaccharide, polysaccharide, disaccharide

• glycerol, polysaccharide, monosaccharide

• disaccharide, monosaccharide, glycerol

• glycogen, cellulose and starch

The sugar in RNA is                    , the sugar in DNA is                            .

• deoxyribose, ribose

• ribose, deoxyribose

• ribose, phosphate

• ribose, uracil

Carbohydrates provide fuel for the body. But according to experts, one should limit the intake of carbohydrate-rich foods. Why is this so?

• To avoid get dizziness.

• To avoid too much energy.

• To avoid diabetes and heart disease

• To avoid mouth diseases

Nutritional chemists have found that burning 1 gram of fat releases twice amount of heat energy as burning 1 gram of starch. Based on this information, which type of biomolecule would cause a person to gain more weight?

• Nucleic Acid

• Protein

• Lipid

• Carbohydrate

Which of the following elements is NOT present in carbohydrates?

• carbon

• hydrogen

• oxygen

• nitrogen

Which of the following is a correct pair?

• glucose: disaccharide

• sucrose: monosaccharide

• starch: polysaccharide

• triglyceride: polysaccharide