Biology November Monthly Assessment

Which of the following does NOT require ATP?

• Facilitated diffusion

• Activation of the contractile vacuole

• Sodium-potassium pump

• Receptor-mediated endocytosis

Which of the following is not found embedded in the cell membrane?

• Proteins

• Phospholipids

• Nucleic acids

• Cholesterol

Which of the following acts as catalyst?

• Starch

• Enzyme

• ATP

• Cholesterol

What is the monomers for nucleic acids?

• Peptides

• Amino acids

• Monomers

• Nucleotides

Which enzyme is used by ATP?

• ATPase

• ATP synthase

• ATP polymerase

• None of the choices

Which of the following is true of unsaturated fats?

• They are more common in animals than in plants.

• They have double bonds in their fatty acid chains.

• They generally solidify at room temperature.

• They contain more hydrogen than do saturated fats having the same number of carbon atoms.

What component of amino acid structure varies among different amino acids?

• long carbon-hydrogen tails of the molecule

• presence of a central C atom

• components of the R group

• glycerol molecule that forms the backbone of the amino acid

Phospholipids and triglycerides both ________.

• contain serine or some other organic compound

• have three fatty acids

• have a glycerol backbone

• have a phosphate

How do phospholipids interact with water molecules?

• The polar heads avoid water; the nonpolar tails attract water (because water is polar and opposites attract).

• Phospholipids do not interact with water because water is polar and lipids are nonpolar.

• The polar heads interact with water; the nonpolar tails do not.

• Phospholipids dissolve in water.

You would like to lose weight. Which of the following should be your preferred food group?

• Lactose and glucose

• Sucrose and starch

• Starch and fructose

• Cellulose and fructose