$$ \mathrm{C_6H_{12}O_6$} + 6\,\mathrm{O_2$} \rightarrow 6\,\mathrm{CO_2$} + 6\,\mathrm{H_2O} + \text{energy} $$

$$ \text{Amino acid}_1 + \text{Amino acid}_2 \rightarrow \text{Dipeptide} + \mathrm{H_2O} $$

Question 1

Which of the following best describes the role of amino acids in biological systems?

Accepted Answer

They serve as building blocks for proteins, which perform various structural and functional roles in cells.

Question 2

A patient is diagnosed with a metabolic disorder that impairs the breakdown of glucose. Which process is most likely affected?

Accepted Answer

Glycolysis

Question 3

Which equation correctly represents the breakdown of glucose during cellular respiration?

Accepted Answer

$$ \mathrm{C_6H_{12}O_6$} + 6\,\mathrm{O_2$} ightarrow 6\,\mathrm{CO_2$} + 6\,\mathrm{H_2O} + 	ext{energy} $$

Question 4

Which of the following best explains why life is possible on Earth?

Accepted Answer

Earth's position allows for liquid water and a stable environment suitable for complex molecules.

Question 5

A scientist is analyzing a sample and detects the presence of peptide bonds. What does this indicate about the sample?

Accepted Answer

It contains proteins or polypeptides.

Question 6

Which process is responsible for the synthesis of glucose in plants?

Accepted Answer

Photosynthesis

Question 7

A mutation causes a change in the sequence of amino acids in a protein. What is the most likely consequence?

Accepted Answer

The protein's structure and function may be altered, potentially leading to disease.

Question 8

Which of the following is a correct statement about enzymes?

Accepted Answer

Enzymes lower the activation energy required for reactions.

Question 9

A patient is unable to digest lactose. Which enzyme is most likely deficient?

Accepted Answer

Lactase

Question 10

Which of the following best describes dehydration synthesis?

Accepted Answer

A process that joins monomers to form polymers by removing water.

Question 11

Which molecule is the primary energy currency of the cell?

Accepted Answer

ATP (Adenosine Triphosphate)

Question 12

A researcher observes that a certain reaction occurs faster in the presence of a specific protein. What is the most likely role of this protein?

Accepted Answer

It acts as an enzyme.

Question 13

Which of the following is a product of the hydrolysis of a protein?

Accepted Answer

Amino acids

Question 14

Which equation represents the dehydration synthesis of two amino acids?

Accepted Answer

$$ 	ext{Amino acid}_1 + 	ext{Amino acid}_2 ightarrow 	ext{Dipeptide} + \mathrm{H_2O} $$

Question 15

Which of the following is NOT a function of proteins in living organisms?

Accepted Answer

Storing genetic information

Question 16

A person consumes a meal rich in carbohydrates. Which process will most directly convert these carbohydrates into usable cellular energy?

Accepted Answer

Cellular respiration

Question 17

Which of the following statements about glucose is correct?

Accepted Answer

Glucose is a monosaccharide and a primary source of energy for cells.

Question 18

A genetic disorder affects the synthesis of a specific enzyme required for amino acid metabolism. What is the most likely consequence?

Accepted Answer

Accumulation of the substrate amino acid and possible toxicity.

Question 19

Which of the following best explains the importance of Earth's environment for the origin of life?

Accepted Answer

It provided the necessary conditions for the formation of complex organic molecules.

Question 20

Which process is most directly responsible for the formation of peptide bonds?

Accepted Answer

Dehydration synthesis

General Biology: Amino Acids, Glucose, and Biological Processes

Study Guide - Practice Questions