Q: A cell is observed to have a high rate of ATP hydrolysis. Which of the following equations best represents this process?

$ \mathrm{ATP} + \mathrm{H}_2\mathrm{O} \rightarrow \mathrm{ADP} + \mathrm{P_i} + \text{energy} $

Question 1

Which of the following best describes the process of dehydration synthesis in the formation of biomolecules?

Accepted Answer

A water molecule is removed to form a covalent bond between two monomers.

Question 2

Which of the following is the correct monomer-polymer pairing for proteins?

Accepted Answer

Amino acid - Protein

Question 3

A marathon runner eats a large meal rich in complex carbohydrates the night before a race. Which polysaccharide will their body primarily use to store this excess glucose for energy?

Accepted Answer

Glycogen

Question 4

Which of the following statements about lipids is TRUE?

Accepted Answer

Lipids are important for long-term energy storage and insulation.

Question 5

A patient is found to have a genetic disorder that prevents the formation of peptide bonds. Which biomolecule will be most directly affected?

Accepted Answer

Proteins

Question 6

Which of the following best explains why saturated fats are solid at room temperature while unsaturated fats are liquid?

Accepted Answer

Saturated fats have only single bonds, allowing them to pack tightly together.

Question 7

Which of the following is a function of carbohydrates in living organisms?

Accepted Answer

Providing instant energy for cells

Question 8

During the hydrolysis of a disaccharide, which of the following occurs?

Accepted Answer

A water molecule is added, breaking the bond between the two monosaccharides.

Question 9

Which of the following best describes the structure of a nucleotide?

Accepted Answer

A phosphate group, a sugar, and a nitrogenous base

Question 10

A scientist denatures a sample of enzyme by heating it to 100°C. What is the most likely result?

Accepted Answer

The enzyme will lose its three-dimensional shape and function.

Question 11

Which of the following is a correct difference between DNA and RNA?

Accepted Answer

DNA contains deoxyribose, while RNA contains ribose.

Question 12

Which of the following best describes the role of ATP in the cell?

Accepted Answer

ATP provides energy for cellular activities by releasing a phosphate group.

Question 13

A cell is observed to have a high rate of ATP hydrolysis. Which of the following equations best represents this process?

Accepted Answer

$ \mathrm{ATP} + \mathrm{H}_2\mathrm{O} ightarrow \mathrm{ADP} + \mathrm{P_i} + 	ext{energy} $

Question 14

Which of the following is NOT a function of proteins in the human body?

Accepted Answer

Storing genetic information

Question 15

Which of the following best explains why cellulose cannot be digested by humans?

Accepted Answer

Humans lack the enzyme needed to break the specific bonds in cellulose.

Question 16

Which of the following is a correct statement about phospholipids?

Accepted Answer

Phospholipids are the main component of cell membranes and have both hydrophilic and hydrophobic regions.

Question 17

A student mixes olive oil and water in a beaker and observes that the oil does not dissolve. Which property of lipids does this demonstrate?

Accepted Answer

Lipids are hydrophobic and nonpolar.

Question 18

Which of the following best describes the process of phosphorylation in the context of ATP?

Accepted Answer

The addition of a phosphate group to ADP to form ATP.

Question 19

Which of the following is a correct example of a dehydration synthesis reaction?

Accepted Answer

Joining two monosaccharides to form a disaccharide and releasing a water molecule.

Question 20

A mutation causes a change in the sequence of nucleotides in DNA. Which of the following is the most direct consequence of this mutation?

Accepted Answer

The sequence of amino acids in a protein may change.

Biomolecules: Structure, Function, and Biological Importance

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