BSC 2086 final Questions With Complete Solutions

BSC 2086 final Questions With Complete Solutions

1) A releasing hormone is a type of tropic hormone. Correct
Answers TRUE

1) A secondary endocrine organ is one that
A) secretes at least two hormones.
B) receives communication from at least two hormones.
C) secretes tropic hormones.
D) is the target of tropic hormones.
E) secretes hormones, but is better known for another function.
Correct Answers E

1) A skeletal muscle is composed of a bundle of ________, each
composed of many muscle fibers wrapped by connective tissue.
A) fascicles
B) myofibrils
C) muscle cells
D) myofilaments
E) sarcomeres Correct Answers A

1) All veins return blood to the heart. Correct Answers TRUE

1) Chemical reactions are only able to occur in one direction.
Correct Answers FALSE

1) Effector organs act as receptors that detect information about
the external environment and transmit that information to the
central nervous system. Correct Answers FALSE

,1) For cells that communicate by electrical synapses, the
message travels between cells via
A) ions moving across the synaptic cleft.
B) the diffusion of neurotransmitters.
C) gap junctions.
D) active transport across the synaptic cleft.
E) passive transport across the synaptic cleft. Correct Answers
C

1) In chemical communication between cells, a ________ cell
secretes a chemical messenger that binds to ________ on the
________ cell.
A) gap : connexons : secretory
B) secretory : connexons : gap
C) secretory : connexons : target
D) target : receptors : secretory
E) secretory : receptors : target Correct Answers E

1) In the chemical equation A + B ⇌ C + D, the materials on the
left-hand side of the equation are known as ________ whereas
the materials on the right-hand side of the equation are know as
________.
A) anabolic : catabolic
B) catabolic : anabolic
C) reactants : products
D) products : reactants
E) product : substrate Correct Answers C

1) Internal respiration refers to the use of oxygen and production
of carbon dioxide by cells. Correct Answers TRUE

,1) Keeping blood on the left side of the heart from mixing with
the blood on the right side is a function of what structure(s)?
A) valves
B) arteries
C) septum
D) apex
E) chordae tendineae Correct Answers C

1) Lipophobic chemical messengers communicate a message to
the target cell by binding to receptors on that cell's membrane.
Correct Answers TRUE

1) Over a period of time and under resting conditions, the
amount of carbon dioxide generated by the body is greater than
the amount of oxygen the body consumes. Correct Answers
FALSE

1) Skeletal muscle fibers are formed by the fusion of multiple
cells during embryonic development, resulting in the presence of
numerous nuclei per fiber. Correct Answers TRUE

1) Sucrose is a disaccharide composed of a glucose and a lactose
molecule. Correct Answers FALSE

1) The autonomic nervous system innervates all the following
effector organs and tissues EXCEPT
A) skeletal muscles.
B) cardiac muscles.
C) endocrine glands.
D) adipose tissues.
E) exocrine glands. Correct Answers A

, 1) The autonomic nervous system is also known as the
involuntary nervous system. Correct Answers TRUE

1) The central nervous system, which is composed of the brain
and spinal cord, receives and processes information from both
the external environment, known as ________ information and,
the internal environment, which refers to ________ information.
A) special : somatic
B) peripheral : somatic
C) somatic : autonomic
D) somatic : visceral
E) sensory : visceral Correct Answers E

1) The excretion of water and solutes in urine has a significant
impact on the volume and composition of fluids in the body.
Correct Answers TRUE

1) The flow equation is: flow = pressure gradient × resistance.
Correct Answers FALSE

1) The movement of a molecule is determined by its energy
state, with that molecule moving from a higher to a lower energy
state. Correct Answers TRUE

1) The respiratory quotient is calculated as the
A) ratio of the volume of oxygen consumed per volume of
carbon dioxide produced.
B) ratio of the volume of carbon dioxide produced per volume
of oxygen consumed.