AP Biology Midterm

Carbohydrate molecules:

• Serve as structural components of human cell walls

• form the regulatory compounds known as enzymes

• are a source of energy

• carbon to carbon bonds are strong

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NGSS.HS-LS1-6

NGSS.HS-LS1-7

The process illustrated in the figure is called:

• condensation

• protein synthesis

• hydrolysis

• dehydration synthesis

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NGSS.HS-LS1-6

The products of the process in the figure shown are:

• monosaccharides

• molecules of glycerol

• representative of a glycoside linkage

• enzymes

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NGSS.HS-LS1-6

A molecule of saturated triacylglycerol (aka triglyceride) contains:

• the maximum number of double bonds between carbons in the fatty acid chains

• the maximum number of triple bonds between carbons in the fatty acid chain

• the maximum number of hydrogen atoms in the fatty acid chain

• alternating single and double bonds between carbons in the fatty acid chain

At which level of protein structure are peptide bonds most important?

• primary

• secondary

• quaternary

• globular

Steroid affecting the fluidity of the plasma membrane

• Cholesterol

• Triglyceride

• Phospholipid

• Protein

All of the following types of chemical bonds are responsible for maintaining the tertiary structure of this polypeptide shown except:

• ionic bonds

• peptide bonds

• hydrophobic interactions

• disulfide bonds

Which monomer is incorrectly matched with the corresponding polymer?

• Monosaccharides are used to build polysaccharides

• Amino acids are used to build proteins

• Fatty acids are used to build nucleic acids

• Glucose molecules are used to build starches

Which characteristic of water molecules directly contributes to the remarkable "water walking" success of the aquatic insects pictured?

• hydrogen bonds

• capillary action

• nonpolar covalent bonds

• ionic bonds

A stalk of celery is placed in a solution of blue colored dye. After one hour, the leaves have blue fluid in their veins. Which property of water is being demonstrated?

• adhesion and cohesion

• evaporation and cooling

• lower density as a solid than as a liquid

• high specific heat

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NGSS.HS-ESS2-5