NSCI 280 Week 1 Quiz

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280 Week 1 Quiz

 Chapter 1 The Human Organism

1.    Knowledge of the structure of body parts
helps us to understand their function. Which of the following is an accurate
example of that principle?


1.    The basic structural unit of the body is
the cell.

2.    The internal environment of the body is
maintained in a relatively stable condition.

3.    Moveable joints allow us to bend our
fingers to perform many different actions.

4.    Each tissue type is composed of cells that
have a similar structure and function.

5.    Negative feedback is not homeostatic.


1.    Organize the following structural levels of
the human body from simplest to most complex.

(1) cell

(2) tissue

(3) chemical

(4) organ system

(5) organ 


1.    1, 2, 3, 4, 5

2.    2, 3, 1, 4, 5

3.    3, 1, 2, 5, 4

4.    4, 2, 3, 1, 5

5.    3, 1, 2, 4, 5


1.    The gallbladder, liver, and stomach are all
part of the


1.    endocrine system.

2.    cardiovascular system.

3.    skeletal system.

4.    respiratory system.

5.    digestive system.


1.    A cell is 


1.    a small structure within a cell.

2.    a structure composed of several tissue types.

3.    the basic structural unit of plants and

4.    a group of organs with a common set of

5.    a group of cells with similar structure and


1.    Which of the following is most similar to
the negative feedback mechanism in human physiology? 


1.    A car runs out of gas and stops.

2.    A teacher marks all the wrong answers on
students’ exam papers.

3.    A toilet tank refills itself after a flush.

4.    An automatic door opens as soon as somebody
approaches it.

5.    A clock ticks on a shelf.






1.    Which of the following sets of directional
terms are most appropriately referred to as opposites? 


1.    distal and proximal

2.    medial and inferior

3.    superior and ventral

4.    anterior and deep

5.    lateral and superior


1.    The thumb is ___ to the fifth digit (little


1.    distal

2.    lateral

3.    medial

4.    proximal

5.    superficial


1.    The anatomical arm refers to the part of
the upper limb from the 


1.    shoulder to the wrist.

2.    elbow to the wrist.

3.    shoulder to the elbow.

4.    elbow to the fingers.

5.    shoulder to the fingers.


1.    Which of the following is NOT found in the
epigastric region? 


1.    liver

2.    stomach

3.    urinary bladder

4.    duodenum

5.    large intestine


1.    The visceral pleura is 


1.    a double-layered serous membrane that
anchors some of the abdominal organs to the body wall.

2.    the serous membrane that covers the lungs.

3.    the serous membrane that lines the
abdominal and pelvic cavities.

4.    space located between the visceral and
parietal pleura.

5.    the membrane that lines the pericardial


Chapter 2 Chemical Basis of Life


1.    The four most abundant elements in the
human body are 


1.    carbon, hydrogen, oxygen, and iron.

2.    carbon, hydrogen, oxygen, and nitrogen.

3.    calcium, hydrogen, sodium, and potassium.

4.    carbon, oxygen, magnesium, and zinc.

5.    carbon, sulfur, calcium, and potassium.




1.    Isotopes of the same element have 


1.    the same number of neutrons but different
numbers of protons.

2.    different numbers of protons and electrons.

3.    the same mass number.

4.    the same atomic number but differ in their
mass numbers.

5.    no mass number.


1.    Electrons 


1.    comprise the majority of the mass of an

2.    are located in the nucleus of an atom.

3.    have a positive charge of one.

4.    are the subatomic particles most involved
in bonding behavior of atoms.

5.    do not participate in the bonding of atoms.


1.    Which of the following is a synthesis


1.    Two amino acids are bonded together to form
a dipeptide.

2.    Sucrose is chemically separated to form one
molecule of glucose and one molecule of fructose.

3.    Sodium chloride is dissolved in water.

4.    Several dipeptide chains are formed from
digestion of a long polypeptide chain.

5.    ATP is converted to ADP.


1.    Heat energy is 


1.    the form of energy that actually does work.

2.    movement of ions or electrons.

3.    energy that flows between objects with
different temperatures.

4.    stored energy that could do work but is not
doing so.

5.    energy that moves in waves.


1.    In the reversible reaction, CO2 + H2O « H2CO3 « H+ + HCO3 , a decrease in respiration rate will increase the concentration of
2 in the blood. What will this do to the amount of H+ in the blood? 


1.    H+ will increase.

2.    H+ will decrease.

3.    H+ will be unchanged.


1.    Solution A increases its acidity. This
means that the 


1.    solution is closer to neutrality.

2.    pH of the solution has increased.

3.    solution will now accept more protons.

4.    number of hydrogen ions has decreased.

5.    number of hydrogen ions has increased.








1.    Phospholipids 


1.    contain subunits called amino acids.

2.    are water-soluble.

3.    are a type of steroid.

4.    are fat-soluble vitamins.

5.    are found in cell membranes.


1.    What protein structure results from folding
or coiling of a polypeptide chain caused by hydrogen bonds between amino


1.    quaternary structure

2.    tertiary structure

3.    secondary structure

4.    primary structure

5.    peptide structure


1.    Arrange the following from largest to

(1) nucleus

(2) DNA molecule

(3) skin cell

(4) chicken eggs 


1.    1, 2, 3, 4

2.    4, 3, 1, 2

3.    3, 4, 2, 1

4.    2, 3, 1, 4

5.    4, 2, 3, 1


Chapter 3 Cell Biology and Genetics

1.    The structural and functional unit of all
living organisms is the 


1.    ribosome.

2.    cell.

3.    organ.

4.    organelle.

5.    plasma membrane.


1.    In order to study in detail the anatomy of
internal cell parts, it would be best to use 


1.    x-rays.

2.    flashlights.

3.    a transmission electron microscope (TEM).

4.    tissue cultures.

5.    a scanning electron microscope (SEM).


1.    The main components of the plasma membrane


1.    carbohydrates and lipids.

2.    lipids and ions.

3.    proteins and carbohydrates.

4.    proteins and lipids.

5.    ions and proteins.


1.    When a sperm cell comes into contact with
an egg cell, there is a change in the electrical charge across the plasma
membrane and various channel proteins close. These channels would be


1.    open-gated channels.

2.    voltage-gated channels.

3.    chemical-gated channels.

4.    ligand-gated channels.

5.    nongated ion channels.


1.    In general, water-soluble molecules diffuse
through the ______ ______; and lipid-soluble molecules diffuse through the
______ ______. 


1.    membrane channels; membrane channels

2.    membrane channels; lipid bilayer

3.    lipid bilayer; membrane channels

4.    lipid bilayer; lipid bilayer

5.    None of these choices is correct.


1.    In the process of diffusion, net movement
of substances is always from a region 


1.    outside the cell to a region inside the

2.    inside the cell to a region outside the

3.    of lower concentration to a region of
higher concentration.

4.    of higher concentration to a region of
lower concentration.

5.    None of these choices is correct.





1.    Osmosis is the diffusion of _____ across a
selectively permeable membrane. 


1.    urea

2.    oxygen

3.    water

4.    sodium

5.    sugar


1.    Cyanide stops the production of ATP. Which
of the following processes would be affected? 


1.    simple diffusion

2.    osmosis

3.    active transport

4.    facilitated diffusion

5.    filtration


1.     Organelles 


1.    are extracellular structures.

2.    are unspecialized portions of a cell.

3.    generally lack membranes.

4.    vary in number and type depending on cell

5.    are structural, but not functional parts of
the cell.


1.     Messenger RNA 


1.    is synthesized when a portion of a DNA
molecule is transcribed.

2.    directs the synthesis of DNA.

3.    determines the sequence of nucleotides in
the anticodons of tRNA.

4.    directs the synthesis of centrioles in the

5.    is not involved in the synthesis of proteins.
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