Q: Which of the following reactions correctly represents the hydrolysis of ATP?

$$ATP + H_2O \rightarrow ADP + P_i + \text{energy}$$

Question 1

Which of the following best describes the general formula for monosaccharides found in carbohydrates?

Accepted Answer

$$C_nH_{2n}O_n$$

Question 2

A patient is diagnosed with a deficiency in the enzyme that catalyzes the dehydration synthesis of glucose and fructose. Which disaccharide will be most affected?

Accepted Answer

Sucrose

Question 3

Which statement correctly distinguishes saturated from unsaturated fatty acids?

Accepted Answer

Saturated fatty acids have only single covalent bonds between carbon atoms, allowing them to pack closely and be solid at room temperature.

Question 4

Which of the following is a function of triglycerides in the human body?

Accepted Answer

Energy storage

Question 5

A cell membrane is primarily composed of which type of lipid, and what is a key property of its structure?

Accepted Answer

Phospholipids; they have a hydrophilic head and hydrophobic tails

Question 6

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

Accepted Answer

Storing genetic information

Question 7

What type of bond links amino acids together in a protein, and what groups are involved in this bond?

Accepted Answer

Peptide bond; formed between the amine group of one amino acid and the acid group of another

Question 8

Which level of protein structure is directly responsible for the formation of alpha helices and beta pleated sheets?

Accepted Answer

Secondary structure

Question 9

A chef accidentally overheats a piece of meat, causing the proteins to lose their 3D structure and function. What process has occurred?

Accepted Answer

Denaturation

Question 10

Enzymes increase the rate of chemical reactions by:

Accepted Answer

Lowering the activation energy required for the reaction

Question 11

Which of the following is true regarding the structure of DNA?

Accepted Answer

It is a double-stranded helical molecule with complementary base pairing

Question 12

Which nitrogenous bases are classified as purines in DNA?

Accepted Answer

Adenine and guanine

Question 13

During protein synthesis, which molecule carries the genetic instructions from the nucleus to the cytoplasm?

Accepted Answer

Messenger RNA (mRNA)

Question 14

Which of the following reactions correctly represents the hydrolysis of ATP?

Accepted Answer

$$ATP + H_2O ightarrow ADP + P_i + 	ext{energy}$$

Question 15

A patient is unable to store excess glucose efficiently. Which polysaccharide is most likely deficient in their body?

Accepted Answer

Glycogen

Question 16

Which of the following is a real-world example of an eicosanoid and its function?

Accepted Answer

Prostaglandins; play a role in inflammation and are targeted by NSAIDs like aspirin

Question 17

Which of the following best explains why trans fats are considered unhealthy?

Accepted Answer

They are modified unsaturated fats that structurally resemble saturated fats, increasing risk of heart disease

Question 18

Which of the following is a multi-step process involving both transcription and translation?

Accepted Answer

Protein synthesis from DNA instructions

Question 19

A mutation causes the substitution of a hydrophobic R group for a hydrophilic one in a protein. Which level of protein structure is most directly affected?

Accepted Answer

Tertiary structure

Question 20

Which of the following best describes the role of ATP in cellular work?

Accepted Answer

ATP transfers its terminal phosphate group to other compounds, providing energy for cellular processes

Chapter 2: Chemistry Comes Alive – Biochemistry Essentials for Anatomy & Physiology

Guida di studio - Domande di pratica

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