Q: Which of the following equations correctly represents the process of aerobic respiration occurring in mitochondria?

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

Question 1

Which organelle is primarily responsible for the detoxification of harmful substances and the synthesis of lipids in liver cells?

Accepted Answer

Smooth Endoplasmic Reticulum

Question 2

A patient has a genetic disorder that impairs the function of their peroxisomes. Which of the following cellular processes would be most directly affected?

Accepted Answer

Lipid metabolism and detoxification

Question 3

During which phase of the cell cycle does DNA replication occur, and what is the main purpose of this process?

Accepted Answer

S phase; to ensure each daughter cell receives an identical set of chromosomes

Question 4

Which of the following best describes the difference between mitosis and cytokinesis?

Accepted Answer

Mitosis divides the nucleus; cytokinesis divides the cytoplasm

Question 5

A mutation changes the codon sequence UAC to UAA in an mRNA strand. What is the most likely consequence for the resulting protein?

Accepted Answer

Translation will terminate prematurely, producing a truncated protein

Question 6

Which of the following equations correctly represents the process of aerobic respiration occurring in mitochondria?

Accepted Answer

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

Question 7

Which type of epithelial tissue would you expect to find lining the air sacs (alveoli) of the lungs, and why?

Accepted Answer

Simple squamous epithelium; to facilitate rapid gas exchange

Question 8

A biopsy reveals tissue with closely packed cells, no blood vessels, and a high rate of cell division. Which tissue type is most likely being observed?

Accepted Answer

Epithelial tissue

Question 9

Which of the following best explains why cartilage injuries heal slowly compared to bone injuries?

Accepted Answer

Cartilage is avascular and has limited regenerative capacity

Question 10

A patient suffers a deep skin wound that results in scar formation. Which step of tissue repair is primarily responsible for the development of scar tissue?

Accepted Answer

Fibrosis

Question 11

Which of the following cellular extensions would be most abundant on the surface of cells lining the small intestine, and what is their primary function?

Accepted Answer

Microvilli; increasing surface area for absorption

Question 12

Which of the following best describes the role of tRNA during translation?

Accepted Answer

Brings specific amino acids to the ribosome according to the mRNA codon

Question 13

Which connective tissue type is specialized for energy storage and insulation?

Accepted Answer

Adipose connective tissue

Question 14

A scientist observes a tissue with striations, multiple nuclei per cell, and voluntary control. Which tissue is being observed?

Accepted Answer

Skeletal muscle

Question 15

Which of the following best describes the function of the Golgi apparatus in a pancreatic cell actively secreting digestive enzymes?

Accepted Answer

Modifies, sorts, and packages proteins for secretion

Question 16

Which body membrane lines the thoracic cavity and secretes a lubricating fluid to reduce friction between organs?

Accepted Answer

Serous membrane

Question 17

Which of the following is a correct sequence of events in tissue repair after a moderate injury?

Accepted Answer

Inflammation → Organization → Regeneration/Fibrosis

Question 18

Which of the following best explains why neurons in the central nervous system have limited ability to regenerate after injury?

Accepted Answer

They have very limited regenerative capacity

Question 19

Which of the following best describes the composition of the cytoskeleton and its primary function?

Accepted Answer

Network of protein filaments; provides structural support and facilitates movement

Question 20

A cell is observed with abundant rough endoplasmic reticulum and a prominent Golgi apparatus. Which function is this cell most likely specialized for?

Accepted Answer

Synthesis and secretion of proteins

Cytology and Histology: Structure and Function of Cells and Tissues

Study Guide - Practice Questions

Study Guide - Flashcards