Question
Question 1 of 32
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Which of the following does not utilize active transport?
A . movement of oxygen from the lungs into the blood
B . concentrating iodine ions in the thyroid gland
C . absorbing sugar in the gut
D . water homeostasis in the kidneys
E . movement of sodium and potassium in nerve cells
Question 2 of 32
3 . 0/ 3 . 0 Points
Which type of junctions must there be between cells to form a barrier?
A . adhesion junctions
B . gap junctions
C . tight junctions
D . channel junctions
E . free junctions
Question 3 of 32
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The assisted transport of a molecule across the cell membrane without an expenditure of energy is known as what?
A . diffusion
B . facilitated transport
C . active transport
D . osmosis
E . crenation
Question 4 of 32
3 . 0/ 3 . 0 Points
During a hurricane, salt water invades fresh water marshes causing many of the plants to die . The plants are killed because the salt water solution is __________________ to the plants, drawing water from their cells .
A . isotonic
B . hypotonic
C . mesotonic
D . oligotonic
E . hypertonic
Question 5 of 32
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What is the maximum number of ATP molecules produced during aerobic respiration?
A . 38
B . 36
C . 32
D . 2
E . 4
Question 6 of 32
3 . 0/ 3 . 0 Points
How large is a nuclear pore in the nuclear envelope?
A . larger than a ribosome
B . larger than the Golgi apparatus
C . larger than the endoplasmic reticulum
D . smaller than a ribosome
E . smaller than a protein
Question 7 of 32
3 . 0/ 3 . 0 Points
Often when a person is admitted to the hospital, an intravenous solution of normal saline is begun . Since this does not harm the patient, what is the tonicity of normal saline compared to your blood?
A . hypertonic
B . isotonic
C . hypotonic
D . pretonic
E . osmotonic
Question 8 of 32
3 . 0/ 3 . 0 Points
Sheree observed an amoeba feeding by engulfing the prey with its false feet or pseudopods . This process is known as
A . pinocytosis .
B . phagocytosis .
C . exocytosis .
D . facilitated transport .
E . osmosis .
Question 9 of 32
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Angela would like to look at living algae from pond water . What type of equipment should she use?
A . compound light microscope
B . transmission electron microscope
C . scanning electron microscope
D . magnifying glass
E . her naked eye
Question 10 of 32
3 . 0/ 3 . 0 Points
If a cell lacked ribosomes, it would not be able to
A . form a spindle apparatus .
B . synthesize proteins .
C . respire oxidatively .
D . break down fats .
E . produce ATP .
Question 11 of 32
3 . 0/ 3 . 0 Points
What components make up the ribosomes?
A . proteins and rRNA
B . proteins and DNA
C . lipids and rRNA
D . carbohydrates and rRNA
E . proteins and DNA
Question 12 of 32
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Which type of gland can become blocked and form a “blackhead?”
A . sudoriferous
B . sweat
C . endocrine
D . sebaceous
E . compound
Question 13 of 32
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________ glands are considered ductless glands and ______ glands contain ducts .
A . Exocrine, endocrine
B . Transitional, exocrine
C . Transitional, endocrine
D . Endocrine, exocrine
E . Sudoriferous, transitional
Question 14 of 32
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Which of the following is responsible for the waterproofing of skin?
A . mucus
B . keratin
C . hyaline cartilage
D . sweat
E . wax
Question 15 of 32
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Which of the following body parts is surrounded by a mucous membrane?
A . the ovaries
B . the heart
C . the cavities of freely movable joints
D . tubes of the digestive system
E . the abdominal cavity
Question 16 of 32
3 . 0/ 3 . 0 Points
Jacob looked up and saw the car . This information was relayed to him via what type of tissue?
A . Epithelial
B . Connective
C . Muscular
D . Nervous
E . Vascular
Question 17 of 32
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Stretch marks are the result of tears in the integumentary layer that contains fibrous connective tissue, elastin, and collagen . What is this region of the integument called?
A . subcutaneous layer
B . Langerhan layer
C . epidermis
D . hypodermis
E . dermis
Question 18 of 32
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The best description for the two components of blood are
A . red blood cells and plasma .
B . platelets and plasma .
C . white blood cells and red blood cells .
D . formed elements and plasma .
E . formed elements and platelets .
Question 19 of 32
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The body’s ability to maintain a relative constancy of its internal environment is called
A . homeostasis .
B . development .
C . homogeneous .
D . coordination .
E . feedback .
Question 20 of 32
3 . 0/ 3 . 0 Points
What type of tissue receives sensory input, integrates data, and conducts impulses?
A . Epithelial tissue
B . Connective tissue
C . Muscular tissue
D . Nervous tissue
E . Vascular tissue
Question 21 of 32
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Which type of tissue covers body surfaces and lines body cavities?
A . epithelial tissue
B . connective tissue
C . muscular tissue
D . nervous tissue
E . vascular tissue
Question 22 of 32
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When you put your hand on a hot stove, ____ receive signals from the sensory receptors or other neurons and ______ conduct nerve impulses .
A . astrocytes, oligodendrocytes
B . axons, dendrites
C . astrocytes, dendrites
D . dendrites, axons
E . dendrites, astrocytes
Question 23 of 32
3 . 0/ 3 . 0 Points
Which of the following is a substance that dissolves in water to release hydrogen ions?
A . base
B . acid
C . protein buffer
D . pH
Question 24 of 32
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Too much carbon dioxide in the blood can be the result of _______ .
A . fever
B . anxiety
C . emphysema
D . hyperventilation
Question 25 of 32
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Which of the following systems can compensate for pH changes in the body the fastest?
A . renal system
B . respiratory system
C . digestive system
D . endocrine system
Question 26 of 32
3 . 0/ 3 . 0 Points
Hypoventilation results in
A . spasms of the hands and feet .
B . an accumulation of CO2 in the blood .
C . lightheadedness .
D . numbness around the lips .
Question 27 of 32
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Acidosis is characterized by a blood pH _______ .
A . less than 7 . 45
B . greater than 7 . 45
C . greater than 7 . 00
D . less than 7 . 35
Question 28 of 32
3 . 0/ 3 . 0 Points
What is the normal range for the partial pressure of carbon dioxide in the blood?
A . 55-65 mm Hg
B . 15-25 mmHg
C . 35-45 mm Hg
D . 7 . 35-7 . 45 mm Hg
Question 29 of 32
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Which of the following is true about “rebreathing”?
A . PCO2 will typically decrease .
B . Anxiety is respiratory problem that can mimic the effects of rebreathing .
C . it will cause the body to go into a state of alkalosis .
D . pH typically will decrease .
Please review Lab Exercise 10, Activity 2 .
Part 4 of 5 – 5 . 0/ 8 . 0 Points Answer the following question in your own words without using any resources . Your answer should be written in complete sentences using correct grammar, spelling, and terminology .
Question 30 of 32
4 . 0/ 4 . 0 Points
Define the term “buffer . ”
Question 31 of 32
1 . 0/ 4 . 0 Points
Briefly explain how the renal system regulates acid-base balance .
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