The reaction of two monomers to form a dimer is shown above. Which description accurately reflects the reaction as shown here?

Two amino acids are joined via dehydration synthesis to form a dipeptide.

Two amino acids are joined via transcription to form a phospholipid.

Two amino acids are joined via hydrolysis to form a disaccharide.

Two amino acids are joined via dehydration synthesis to form a nucleic acid.

The structure of a triglyceride is shown here. The third fatty acid is unsaturated, as shown in the model. If the organism has an increased number of double bonds in their fatty acids of the phospholipids, what describes the changes that would be observed on a cellular level?

The cell membrane would be more fluid at colder temperatures

The cell wall would become more fluid at warmer temperatures.

The cell wall would become more rigid at warmer temperatures.

The cell membrane would be more rigid at room temperature.

What best describes the process illustrated above?

This is a hydrolysis reaction that occurs in an animal cell during digestion that yields energy for the cell.

This is a hydrolysis reaction that removes a water molecule so that energy can be used by the cell.

This is a dehydration synthesis reaction that occurs in a plant cell to build a cell wall of cellulose.

This is a dehydration synthesis reaction that occurs in prokaryotic cells to build proteins for structural use in the cell.

What best describes the process illustrated above?

This is a hydrolysis reaction that occurs in an animal cell during digestion that yields energy for the cell.

This is a hydrolysis reaction that removes a water molecule so that energy can be used by the cell.

This is a dehydration synthesis reaction that occurs in a plant cell to build a cell wall of cellulose.

This is a dehydration synthesis reaction that occurs in prokaryotic cells to build proteins for structural use in the cell.

What statement is true about the reaction below?

it is a dehydration reaction and results in a dipeptide

it is a hydrolysis reaction and results in a peptide bond

it is a hydrolysis reaction and results in a disaccharide

it is a dehydration reaction and results in a lipid

Which statement best describes the role of carbohydrates in organisms?

Animals store excess carbohydrates as glycogen and plants store excess carbohydrates as starch.

Plants continually make glucose through photosynthesis and have no mechanism for carbohydrate storage.

Animals use lipids as a short term energy storage.

Plants use carbohydrates solely for structure while animals use them for energy.

What distinguishes the two nucleic acids as DNA or RNA?

The presence of uracil in RNA or thymine in DNA.

The presence of covalent phosphodiester bonds

The presence of cytosine and guanine in the helix

The presence of phosphate groups in the backbone

Biochemistry

Authored by Cortney Shaller

Science

9th - 12th Grade

NGSS covered

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MULTIPLE CHOICE QUESTION

Proteins

Carbohydrates

Lipids

Nucleic acids

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