Question 1

Which of the following best explains why multicellular organisms are generally larger than unicellular organisms?

Accepted Answer

Multicellular organisms can specialize cells for different functions, allowing for increased size and complexity.

Question 2

A tissue is defined as:

Accepted Answer

A group of specialized cells that are similar in structure and perform a common function.

Question 3

Which type of epithelial tissue is best adapted for diffusion across cell barriers, and where is it commonly found?

Accepted Answer

Simple squamous; lining of blood vessels and lungs

Question 4

Which of the following is a function of exocrine glands?

Accepted Answer

Secreting products into hollow organs or ducts

Question 5

A patient has damage to the epithelial tissue lining their respiratory tract. Which type of epithelial cell is most likely affected?

Accepted Answer

Simple columnar

Question 6

Which of the following statements about stratified epithelial tissue is correct?

Accepted Answer

It provides protection, as in the skin surface.

Question 7

Which equation best represents the relationship between the number of cell layers ($$n) $$and the rate of diffusion ($$D) $$across an epithelial barrier, assuming all other factors are constant?

Accepted Answer

$$D \propto \frac{1}{n}$$

Question 8

Which of the following is NOT a primary tissue type found in the human body?

Accepted Answer

Glandular tissue

Question 9

A researcher observes cells that are cube-shaped and form the lining of glandular tissue. Which type of epithelial tissue is being observed?

Accepted Answer

Cuboidal

Question 10

Which of the following best describes the function of glandular epithelia?

Accepted Answer

To synthesize and secrete products such as hormones or enzymes

Question 11

If a tissue sample from the mouth is examined under a microscope, which type of epithelial cell is most likely to be observed?

Accepted Answer

Squamous

Question 12

Which of the following is a correct pairing of epithelial tissue type and its location?

Accepted Answer

Columnar; lining of digestive tract

Question 13

Which of the following is a distinguishing feature of columnar epithelial cells?

Accepted Answer

They are tall and rectangular, and may include goblet cells that secrete mucus.

Question 14

Which of the following is a function of epithelial tissue?

Accepted Answer

Covering body surfaces and lining cavities to protect underlying tissues

Question 15

Which type of gland secretes its products into the blood for distribution throughout the body?

Accepted Answer

Endocrine gland

Question 16

A tissue sample is found to be composed of a single layer of flattened cells. Which type of tissue is this, and what is its primary function?

Accepted Answer

Simple squamous; diffusion

Question 17

Which of the following scenarios best illustrates the function of stratified epithelial tissue?

Accepted Answer

Protection against abrasion on the skin surface

Question 18

Which of the following is the correct sequence for classifying epithelial tissue?

Accepted Answer

Shape of cells, number of layers

Question 19

Which of the following is a real-world example of the importance of epithelial tissue specialization?

Accepted Answer

The lining of the alveoli in the lungs, which allows for efficient gas exchange due to its simple squamous structure

Question 20

Which of the following best describes the difference between simple and stratified epithelial tissue?

Accepted Answer

Simple epithelial tissue consists of a single layer adapted for diffusion, while stratified consists of multiple layers adapted for protection.

Chapter 4: From Cells to Organ Systems – Human Biology

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