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Human Phys - Test 1

STUDY
PLAY
The study of the structure and shape of the body and body parts is calles
anatomy
the structural and functional unit of life is called
a cell
Hematopoeisis is the function of the
skeletal system
homeostasis in the human body is controlled primarily by which two organ systems
nervous and endocrine systems
which of the following is NOT a necessary life funtion
atmospheric pressure
The survival need that is required in order to release energy from foods is
oxygen
which of the following elements of a control system detects a change
receptor
negative feedback systems:
operate in such a way that the initial stimulus is shut off or reduced
which of the following is in the correct order of the elements in a control system
stimulus, receptor, afferent pathway, control center, efferent pathway, effector, response
in anatomical position
the body is erect with the feet parallel and the arms hanging at the side and the palms facing forward
which of the following orientation terms have opposite meanings in humans
superficial and deep
a section that divides the body on the longitudianl plane into right and left parts is called
sagittal
which type of section could be uses to sparate the thoracic cavity from the abdominal cavity
transverse
isotopes differ from each other in the number of ______ that they possess
neutrons
96% of the human body is composed of the elements
C, O, H, N
when a pair of electrons is shared between two atoms, the bond formed is
covalent bond
which of the following is an example of a synthesis reaction
amino acids form a protein molecule
which of the following is an example of an organic molecule
oxygen
which class of molecules does a disaccharide belong to
carbohydrates
starch is an example of a
polysaccharide
denaturation of an enzyme will
cause the enzyme to become non-functional
which of the following is correctly matches
enzymes - proteins
the universal energy compoud used by all cells of the body is
ATP
disruption of hydrogen bonding in proteins will likely lead to its
denaturation
elimination of introgenous waste from the body is the function of the
urinary system
which of the following systems is matched most accurately to the life function it provides
nervous system - responsiveness
the region of the body that contains the navel is the
umbilical region
which of the following statements is correct regarding the location of the spleen and liver
the spleen is located in the upper left quadrant and the liver is located in the upper right quadrant
The atomic number of an atom reveals the number of
protons in the atomic nucleus
The subatomic particles that are responsible for the chemical behavior of atoms are the
electrons
water is useful in body processes because
it is a good solvent
starch is an example of a
polysaccharide
keratin and collagen are examples of proteins the organic compounds that function in building tissues and acting as enzymes are the
proteins
the organic compounds that function in building tissues and acting as enzymes are the
proteins
which of the following statements about enzymes is true
they are biological catalysts
Globular proteins
play a critical role in virtually all biological processes
Carbohydrates are stored in the liver and muschles in the form of
glycogen
which of the following statements about ATP is false
...
The highest level of structural organization in humans is the organismal level. (T/F)
true
The lymphatic system secretes hormones that regulate processes such as growth repeodution, and nutrient use by cells. (T/F)
false
Most homeostatic control mechanisma are nagative feedbck reactions.(T/F)
true
as body temperature drops below normal, chemical reactions proceed to rapidly and body proteins begin to break down (T/F)
false
the thoracic cavity is separated from the abdominal cavity by diaphragm. (T/F)
true
the cardiovascular system is responsible for removing carbon dioxide from the bloodstream (T/F)
false
the urinary system conserves body water and eliminates waste (T/F)
true
maintenance of boundaries is the functional characteristics of organisms that keeps the body's internal environment distict from the external environment (T/F)
true
matter is the ability to do work (T/F)
false
the ability of water to maintain a relatively constant temperature and preven sudden changes in temperature is due to its high heat capacity (T/F)
true
protein is used to insulate the body and is found in all cell membranes (T/F)
false
all hormones are derived from proteins (T/F)
true
The branch of biological science that deals with the function of organs and organ systems is called __________
physiology
In _______ feedback, the initial stimulus produces a response that further increases the stimulus
positive
the most abundant inorganic chemical substance in the body is ______
water
the most abundant organic substance in the human body is _______
proteins
the system that functions in the storage of calcium is called the ______ system
skeletal
The breakdown of ingested foods into simple molecules that can be absorbed into the bloodstream is termed ____
digestion
the ability to sense changes and react to them is termed ________
irratability
information travels from the receptor to the control center via the ________ pathway
afferent
glucose, fructose, and galactose are examples of a specific catagory of carbohydrates known as _______
monosaccharides
the tendency of the body's system to maintain a relatively constant or balanced internal environment is called _______
homeostasis
the term that describes all chemical reactions occuring in the body is called ______
metabolism
the ____ system protects underlying organs from drying out and mechanical damage
integumentary
the three-dimensional shape of the DNA molecule is called _________
a double helix
the biological catalyst is called ______
an enzyme