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In osmosis


A) water moves from extracellular to intracellular compartments.
B) water moves from a region of high water concentration to a region of low water concentration.
C) solutes move from a region of low water concentration to a region of high water concentration.
D) solutes move from a region of high solute concentration to a region of low solute concentration.
E) plasma membranes must be impermeable to water.

F) D) and E)
G) A) and D)

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B

Which of the following tissue types are attached to a basal lamina or basement membrane?


A) nervous
B) muscular
C) epithelial
D) connective
E) cartilaginous

F) A) and B)
G) A) and E)

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The heating and cooling system in your house or apartment can be thought of as a homeostatic system. When you turn the thermostat dial to 70 degrees Fahrenheit, this can be thought of as the _____ of the system.


A) set point
B) sensor
C) effector
D) homeostat
E) regulatory response

F) All of the above
G) C) and E)

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Most of the water found in the body is in the intracellular fluid compartment.

A) True
B) False

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Which of the following is true of both neurotransmitters and hormones?


A) They are both involved in paracrine signaling.
B) They both interact with receptors inside or on the surface of target cells.
C) They are both produced in glands.
D) They both travel through the bloodstream to target cells.
E) They both influence the activity of multiple organs simultaneously.

F) B) and C)
G) A) and C)

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A simplified form of the Fick diffusion equation is J = DA (C1-C2) where J is the rate of diffusion, D is a constant, A is the area across which diffusion is occurring, and C1 and C2 are the concentrations of the substance on either side of the membrane. Given this, which of the following would INCREASE the rate of diffusion of a solute?


A) an increase in C1 while holding C2 constant
B) an equivalent decrease in both C1 and C2
C) an equivalent increase in both C1 and C2
D) a decrease in D
E) a decrease in A

F) A) and C)
G) B) and E)

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A

Which of the following is NOT a function of the integumentary system?


A) defense against pathogens
B) fluid transport
C) supporting the weight of body structures
D) protection from dehydration
E) regulation of body temperature

F) B) and D)
G) A) and B)

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In which of the following locations would you find skeletal muscle?


A) biceps muscle
B) heart
C) arterial wall
D) small intestine
E) bronchiole

F) A) and B)
G) B) and C)

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In the blood clotting process, platelets arrive at the site of damage and start secreting substances to attract more platelets. More platelets arrive at the site and secrete attractants to recruit more platelets. This is an example of


A) negative feedback.
B) positive feedback.
C) feedforward regulation.
D) paracrine signaling.
E) electrical signaling.

F) C) and D)
G) A) and E)

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Which of the following tissue types is characterized by having cells suspended within an extracellular matrix consisting of a mixture of fibrous proteins and carbohydrates?


A) nervous
B) muscular
C) epithelial
D) connective
E) digestive

F) A) and B)
G) A) and E)

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D

An organ can consist of a single type of tissue.

A) True
B) False

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Solutes move between body compartments by using


A) diffusion.
B) ATP-powered active transport.
C) transporters.
D) facilitated diffusion.
E) Solutes use all of these mechanisms to move between compartments.

F) A) and E)
G) B) and C)

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The release of factors by cells that influence the activity of nearby cells is referred to as


A) autocrine signaling.
B) paracrine signaling.
C) pheromonal signaling.
D) electrical signaling.
E) exocrine signaling.

F) A) and E)
G) B) and D)

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The heating and cooling system in your house or apartment can be thought of as a homeostatic system. You set the thermostat to 70 degrees Fahrenheit, and the air conditioner turns on and starts cooling the room. The air conditioner can be thought of as the _____ of the system.


A) set point
B) sensor
C) effector
D) homeostat
E) regulatory response

F) B) and C)
G) A) and B)

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The direction of water movement across a cell membrane is determined in part by


A) the presence of transporter molecules.
B) the levels of ATP in the cell.
C) the concentration of solutes inside and outside the cell.
D) the amount of pressure inside and outside the cell.
E) the concentration of solutes and amount of pressure inside and outside the cell.

F) All of the above
G) A) and D)

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If an animal has a concentration of one substance in its body identical to the concentration of that substance in the environment, this will also be the case with all other substances (i.e., if it conforms with one substance, it will conform with all substances).

A) True
B) False

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A dog that is conditioned to salivate in response to a stimulus associated with food will salivate in response to that stimulus even after the food is removed.

A) True
B) False

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Homeotic genes


A) are only present in vertebrates.
B) are only present in insects and vertebrates.
C) are found in all animals.
D) have widely varied functions from species to species.
E) are involved in the formation, but not the positioning, of organs.

F) A) and E)
G) None of the above

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Positive feedback loops are more common than negative feedback loops in animal physiological function.

A) True
B) False

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The concept of homeostasis originated with


A) Claude Bernard.
B) Charles Darwin.
C) James Watson.
D) Rosalind Franklin.
E) Gregor Mendel.

F) A) and D)
G) B) and E)

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