Q: Which equation correctly represents the breakdown of ATP to release energy?

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

Question 1

Which of the following best describes homeostasis in the human body?

Accepted Answer

The maintenance of relatively stable internal conditions despite continuous changes in the environment.

Question 2

A solution is defined as:

Accepted Answer

A homogeneous mixture where solute particles are evenly distributed throughout the solvent.

Question 3

Which of the following is an example of a negative feedback mechanism?

Accepted Answer

Regulation of blood glucose levels by insulin.

Question 4

Which factor does NOT directly increase the rate of a chemical reaction in the body?

Accepted Answer

Decreasing the temperature.

Question 5

What is the role of ATP in cellular metabolism?

Accepted Answer

ATP provides energy for cellular processes by releasing energy when converted to ADP and AMP.

Question 6

Which of the following statements about acids and bases is correct?

Accepted Answer

Acids release H\* ions and lower the pH.

Question 7

A patient receives an intravenous solution that is hypertonic compared to their blood plasma. What is the most likely effect on their red blood cells?

Accepted Answer

Cells will shrink due to water leaving the cell (crenation).

Question 8

Which equation correctly represents the breakdown of ATP to release energy?

Accepted Answer

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

Question 9

Which of the following is the smallest building block of proteins?

Accepted Answer

Amino acid

Question 10

A cell is placed in a hypotonic solution. What will happen to the cell?

Accepted Answer

Water will enter the cell, causing it to swell and possibly burst.

Question 11

Which transport mechanism requires energy in the form of ATP?

Accepted Answer

Primary active transport

Question 12

The Na\*-K\* pump is essential for maintaining the resting membrane potential. Which statement best describes its function?

Accepted Answer

It pumps Na\* out of the cell and K\* into the cell against their concentration gradients.

Question 13

During protein synthesis, what is the role of mRNA?

Accepted Answer

It carries the genetic code from DNA to the ribosome for translation.

Question 14

Which phase of the cell cycle is characterized by DNA replication?

Accepted Answer

S phase

Question 15

Which of the following is a clinical manifestation of acute inflammation?

Accepted Answer

Vasodilation and increased capillary permeability.

Question 16

Fever is a systemic manifestation of inflammation. What is its primary cause?

Accepted Answer

Release of exogenous and endogenous pyrogens acting on the hypothalamus.

Question 17

Which of the following best describes the difference between local and systemic responses to acute inflammation?

Accepted Answer

Local responses are confined to the site of injury, while systemic responses affect the whole body (e.g., fever, leukocytosis).

Question 18

Which of the following is a characteristic of chronic inflammation?

Accepted Answer

Tissue destruction and repair involving macrophages, lymphocytes, and fibrosis.

Question 19

Which of the following best describes the process of infection leading to septicaemia?

Accepted Answer

Presence of bacteria in the blood due to failure of the body's defense mechanisms, leading to widespread vasodilation.

Introduction to Biochemistry, Homeostasis, Mitosis, Inflammation, Fever, and Infection – Study Notes for Anatomy & Physiology

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