Question 1

A physiologist is a biologist who studies the ________.
A)structure of living things
B)structure of body parts
C)evolution of animals
D)function of body parts

Accepted Answer

Physiologists focus on understanding how body parts function and work together, rather than their structure or evolutionary history.

Question 2

Connective tissue is different from the other major tissue types in that ________.
A)it is made up of cells
B)its cells are sparsely scattered through an extracellular matrix
C)its cells line organs and cover the surface of the body
D)it is found only in humans

Accepted Answer

Connective tissue is characterized by having cells that are sparsely scattered through an extracellular matrix, which distinguishes it from other tissue types like epithelial tissue that have closely packed cells.

Question 3

Bone is a type of ________.
A)connective tissue
B)epithelial tissue
C)extracellular matrix
D)adipose tissue

Accepted Answer

Bone is a type of connective tissue that provides structural support and protection to the body.

Question 4

Skeletal muscle is different from both smooth and cardiac muscle because skeletal muscles ________.
A)are made of cells called "fibers"
B)cannot be contracted voluntarily
C)can be contracted voluntarily
D)cells have nuclei

Accepted Answer

Skeletal muscles can be contracted voluntarily, unlike smooth and cardiac muscles, which are controlled involuntarily.

Question 5

Which type of tissue forms an electrical communication system within the body?
A)nervous
B)blood
C)connective
D)muscle

Accepted Answer

Nervous tissue is responsible for forming the electrical communication system within the body, as it consists of neurons that transmit electrical signals.

Question 6

Imagine an invertebrate that lives in an estuary where salinity varies cyclically with the tides. If this animal practices homeostasis with respect to the salt concentration of its body fluids, its salt concentration will show ________.
A)no fluctuations
B)slight, continuous fluctuations
C)a more concentrated state than the surrounding water at all times
D)a more diluted state than the surrounding water at all times

Accepted Answer

An invertebrate practicing homeostasis will maintain its internal salt concentration relatively stable, but slight, continuous fluctuations may occur due to the changing external salinity in the estuary.

Question 7

A typical skeletal muscle ________.
A)is found in the walls of organs such as the digestive tract
B)has fibers that do not have a striped appearance under the microscope
C)can be enlarged by exercise
D)is only found in heart tissue

Accepted Answer

Skeletal muscle can be enlarged by exercise, a process known as hypertrophy.

Question 8

Which type of tissue stores fat in the body?
A)cartilage
B)bone
C)adipose tissue
D)fibrous connective tissue

Accepted Answer

Adipose tissue is the type of tissue that stores fat in the body. It acts as an energy reserve and provides insulation and cushioning for organs.

Question 9

The fact that every organism continuously exchanges chemicals and energy with its surroundings indicates that organisms ________.
A)are open systems
B)are closed systems
C)have tightly controlled thermoregulation
D)osmoregulate

Accepted Answer

Organisms are open systems because they exchange energy and matter with their environment.

Question 10

In animals, individual cells are grouped into ________.
A)organs
B)tissues
C)organisms
D)organ systems

Accepted Answer

In animals, individual cells are grouped into tissues, which then form organs and organ systems.

Question 11

Which is the most abundant kind of tissue in the bodies of vertebrates?
A)connective
B)epithelial
C)blood
D)muscle

Accepted Answer

The answer of Which is the most abundant kind of...

Question 12

In a person suffering from heat stroke, body temperature disrupts the ________.
A)organization of tissues into organs
B)processes of the liver
C)control center of the brain
D)cells of the digestive tract

Accepted Answer

Heat stroke affects the hypothalamus, the control center of the brain responsible for regulating body temperature.

Question 13

The vertebrate kidney helps to keep the acidity of the body fluids constant by varying the amount of hydrogen ions (H⁺)it secretes into the urine. This aspect of kidney function, like other mechanisms of homeostasis, is most likely controlled by ________. A)a negative feedback mechanism B)nerve impulses from the brain C)a hormone produced in the brain D)a hormone produced in the kidney itself

Accepted Answer

The regulation of hydrogen ion secretion by the kidney is controlled by a negative feedback mechanism to maintain homeostasis.

Question 14

Which statement about organs is correct?
A)An organ represents a lower level of structure than the tissues composing it.
B)An organ consists of only one kind of tissue.
C)An organ performs functions that none of its components can carry out alone.
D)An organ consists of many cells, all of the same type.

Accepted Answer

An organ is made up of multiple types of tissues that work together to perform specific functions that individual tissues or cells cannot perform alone.

Question 15

Which type of connective tissue is the most common in the typical human body?
A)fibrous connective tissue
B)adipose tissue
C)loose connective tissue
D)bone

Accepted Answer

Loose connective tissue is the most common type of connective tissue in the human body, providing support and holding organs in place.

Question 16

What kind of connective tissue has a matrix that is strong and flexible?
A)bone
B)adipose tissue
C)loose connective tissue
D)cartilage

Accepted Answer

Cartilage is a type of connective tissue with a matrix that is both strong and flexible, allowing it to support structures while providing flexibility.

Question 17

The basic unit of nervous tissue is the ________.
A)dendrite
B)axon
C)neuron
D)brain

Accepted Answer

The basic unit of nervous tissue is the neuron, which is the fundamental cell responsible for transmitting nerve impulses.

Question 18

A main function of most types of epithelial tissue is ________.
A)sensation
B)support
C)covering surfaces
D)absorption

Accepted Answer

Epithelial tissue primarily functions to cover surfaces, providing a protective barrier and lining for organs and structures within the body.

Question 19

Involuntary muscle includes ________.
A)skeletal muscle only
B)smooth muscle only
C)smooth muscle and cardiac muscle
D)smooth muscle, cardiac muscle, and some skeletal muscle

Accepted Answer

Involuntary muscles are those that operate without conscious control. Smooth muscle and cardiac muscle are both involuntary, while skeletal muscle is voluntary.

Question 20

Homeostasis is ________.
A)the maintenance of an unchanging internal state
B)a pathological condition
C)the maintenance of a relatively stable internal environment
D)the way the internal environment influences the external environment

Accepted Answer

Homeostasis is the process by which living organisms maintain a relatively stable internal environment despite changes in external conditions.

Quiz 21: Unifying Concepts of Animal Structure and Function

A physiologist is a biologist who studies the ________.

Connective tissue is different from the other major tissue types in that ________.

Bone is a type of ________.

Skeletal muscle is different from both smooth and cardiac muscle because skeletal muscles ________.

Which type of tissue forms an electrical communication system within the body?

Imagine an invertebrate that lives in an estuary where salinity varies cyclically with the tides. If this animal practices homeostasis with respect to the salt concentration of its body fluids, its salt concentration will show ________.

A typical skeletal muscle ________.

Which type of tissue stores fat in the body?

The fact that every organism continuously exchanges chemicals and energy with its surroundings indicates that organisms ________.

In animals, individual cells are grouped into ________.

Which is the most abundant kind of tissue in the bodies of vertebrates?

In a person suffering from heat stroke, body temperature disrupts the ________.

The vertebrate kidney helps to keep the acidity of the body fluids constant by varying the amount of hydrogen ions (H⁺) it secretes into the urine. This aspect of kidney function, like other mechanisms of homeostasis, is most likely controlled by ________.

Which statement about organs is correct?

Which type of connective tissue is the most common in the typical human body?

What kind of connective tissue has a matrix that is strong and flexible?

The basic unit of nervous tissue is the ________.

A main function of most types of epithelial tissue is ________.

Involuntary muscle includes ________.

Homeostasis is ________.