Exam #1 (Ch's. 1,3,&4) - BIO 425 Question and answer well
verified @2026
A single complete individual capable of response to stimuli, reproduction, growth and development,
and maintenance of homeostasis is termed a living {blank} - ANSWER💫✔️-organism
Responsiveness is also known as: metabolism
stimuli
excitability
growth - ANSWER💫✔️-excitability
Without the expenditure of energy, the net movement of matter in a physiological gradient will
always be from a region of ______ concentration to a region of ______ concentration.:
lower, higher
higher, lower - ANSWER💫✔️-higher, lower
What is a cell or organ that is specialized to detect a stimulus called? 1) integrator 2) receptor 3)
Effector - ANSWER💫✔️-Receptor
What is an integrator? - ANSWER💫✔️-The integrating center of a feedback mechanism processes
information, relates it to other information, and makes a decision of action.
What is an effector? - ANSWER💫✔️-An effector is a molecule, cell, or organ that carries out a response
to a stimulus.
What is the plural form of cortex?
Cortexes
Cortices
Corti - ANSWER💫✔️-Cortices
,An organ is best described as which of the following?
1) A structure composed of at least two different tissues, with recognizable boundaries, and with a
discrete function
2) Two or more organs, that work together for a common function
3) The smallest unit of an organism that can carry out all the functions of life
4) A single complete individual
5) A group of cells working together for a common function - ANSWER💫✔️-1) A structure composed of
at least two different tissues, with recognizable boundaries, and with a discrete function
Students are studying the shape, size, and parts of the heart. They are studying the ______ of the
heart.
anatomy
chemistry
physiology
physics - ANSWER💫✔️-anatomy
A branch of medicine that utilizes medical imaging technologies to explore the interior of the body is
called (blank). - ANSWER💫✔️-radiology
Who is known as the father of the theory of natural selection? - ANSWER💫✔️-Charles Darwin
True or false: A tissue is more complex than an organ. - ANSWER💫✔️-False
True or false: The study of ultrastructure focuses on examining individual cells, but not the fine details
of cells. - ANSWER💫✔️-False
Changes in the environment, to which organisms respond, are called what?
1) Signals
2) Effectors
, 3) Stimuli
4) Receptors - ANSWER💫✔️-Stimuli
What are signals? - ANSWER💫✔️-The signals that organisms respond to are called stimuli. A stimulus
is detected by a receptor.
A change in the genetic composition of a population of organisms over a period of time is called -
ANSWER💫✔️-Evolution
Which of the following are features of an arboreal habitat?
1)Relative safety from predators
2)Relatively less competition
3)Slow moving prey items
4)Rich supply of leaves and fruit - ANSWER💫✔️-2) Relatively less competition
1) Relative safety from predators
4)Rich supply of leaves and fruit
Organelles are composed of (blank)
1) organs
2) cells
3) tissues
4) molecules - ANSWER💫✔️-4) molecules
The study of individual cells is called ______.
histology
anatomy
histopathology
cytology - ANSWER💫✔️-cytology
verified @2026
A single complete individual capable of response to stimuli, reproduction, growth and development,
and maintenance of homeostasis is termed a living {blank} - ANSWER💫✔️-organism
Responsiveness is also known as: metabolism
stimuli
excitability
growth - ANSWER💫✔️-excitability
Without the expenditure of energy, the net movement of matter in a physiological gradient will
always be from a region of ______ concentration to a region of ______ concentration.:
lower, higher
higher, lower - ANSWER💫✔️-higher, lower
What is a cell or organ that is specialized to detect a stimulus called? 1) integrator 2) receptor 3)
Effector - ANSWER💫✔️-Receptor
What is an integrator? - ANSWER💫✔️-The integrating center of a feedback mechanism processes
information, relates it to other information, and makes a decision of action.
What is an effector? - ANSWER💫✔️-An effector is a molecule, cell, or organ that carries out a response
to a stimulus.
What is the plural form of cortex?
Cortexes
Cortices
Corti - ANSWER💫✔️-Cortices
,An organ is best described as which of the following?
1) A structure composed of at least two different tissues, with recognizable boundaries, and with a
discrete function
2) Two or more organs, that work together for a common function
3) The smallest unit of an organism that can carry out all the functions of life
4) A single complete individual
5) A group of cells working together for a common function - ANSWER💫✔️-1) A structure composed of
at least two different tissues, with recognizable boundaries, and with a discrete function
Students are studying the shape, size, and parts of the heart. They are studying the ______ of the
heart.
anatomy
chemistry
physiology
physics - ANSWER💫✔️-anatomy
A branch of medicine that utilizes medical imaging technologies to explore the interior of the body is
called (blank). - ANSWER💫✔️-radiology
Who is known as the father of the theory of natural selection? - ANSWER💫✔️-Charles Darwin
True or false: A tissue is more complex than an organ. - ANSWER💫✔️-False
True or false: The study of ultrastructure focuses on examining individual cells, but not the fine details
of cells. - ANSWER💫✔️-False
Changes in the environment, to which organisms respond, are called what?
1) Signals
2) Effectors
, 3) Stimuli
4) Receptors - ANSWER💫✔️-Stimuli
What are signals? - ANSWER💫✔️-The signals that organisms respond to are called stimuli. A stimulus
is detected by a receptor.
A change in the genetic composition of a population of organisms over a period of time is called -
ANSWER💫✔️-Evolution
Which of the following are features of an arboreal habitat?
1)Relative safety from predators
2)Relatively less competition
3)Slow moving prey items
4)Rich supply of leaves and fruit - ANSWER💫✔️-2) Relatively less competition
1) Relative safety from predators
4)Rich supply of leaves and fruit
Organelles are composed of (blank)
1) organs
2) cells
3) tissues
4) molecules - ANSWER💫✔️-4) molecules
The study of individual cells is called ______.
histology
anatomy
histopathology
cytology - ANSWER💫✔️-cytology
