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APHY 201 Exam 1 questions and answers.
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APHY 201 Exam 1 questions and answers.
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APHY 201 Exam 14 major cell/tissue types - questions and answers-muscle, neuron, epithelial, connective
4 major elements in the human body - questions and answers-Hydrogen, Oxygen, Carbon and
Nitrogen
Affinity - questions and answers-strength with which ligand binds to its binding site
Amphipathic molecules - questions and answers-a molecule containing polar groups at one end
and nonpolar groups at the other
aquaporin - questions and answers-protein membrane channel through which water can diffuse
Atom - questions and answers-mallest unit of matter that has unique chemical characteristics;
has no net charge; combines with other atoms to form chemical substances
Atomic mass - questions and answers-# of protons + neutrons
Atomic nucleus - questions and answers-Area of protons and neutrons in the center of an atom
Atomic number - questions and answers-# of protons
Binding site - questions and answers-region of protein to which a specific ligand binds
Blood plasma - questions and answers-Liquid portion of blood
Chemical specificity - questions and answers-selectivity; ability of binding site to react with only
one, or a limited number of, types of molecules
Connective tissue - questions and answers-major component of extracellular matrices, cartilage,
and bone
Covalent bond - questions and answers-chemical bond between two atoms in which each atom
shares one of its electrons with the other
Cytoplasm - questions and answers-region of cell interior outside the nucleus (includes
organelles)
Cytosol - questions and answers-intracellular fluid that surrounds cell organelles and nucleus
(excludes organelles)
Dehydration reactions - questions and answers-Type of chemical reaction in which two smaller
molecules, are joined to form a larger molecule; a single molecule of water is lost in the process
, Desmosome - questions and answers-
Diffusion equilibrium - questions and answers-state during which diffusion fluxes in opposite
directions are equal
Dynamic constancy - questions and answers-a way of describing homeostasis that includes the
idea that a variable such as blood glucose may vary in the short term but is stable and
predictable when averaged over the long term
Electron - questions and answers-Negative charge
Element - questions and answers-Atoms that are the same joined together
Endoplasmic reticulum - questions and answers-cell organelle that consists of interconnected
network of membrane-bound branched tubules and flattened sacs; two types are distinguished:
rough, with ribosomes attached, and smooth, which is smooth-surfaced (does not contain
ribosomes)
Epithelial tissue - questions and answers-cell at surface of body or hollow organ; specialized to
secrete or absorb ions and organic molecules; with other epithelial cells
Extracellular fluid - questions and answers-Made up of blood plasma and interstitial fluid
facilitated diffusion - questions and answers-system using a transporter to move molecules from
high to low concentration across a membrane; energy not required
Gap junction - questions and answers-protein channels linking cytosol of adjacent cells
Glycolysis - questions and answers-Happens in the cytocol
Golgi apparatus - questions and answers-processes newly synthesized proteins for secretion or
distribution to other organelles
Homeostasis - questions and answers-relatively stable condition of internal environment that
results from regulatory system actions
Hydrogen bond - questions and answers-weak chemical bond between two molecules or parts
of the same molecule in which negative region of one polarized substance is electrostatically
attracted to a positively charged region of polarized hydrogen atom in the other
Hydrolysis - questions and answers-breaking of chemical bond with water
Hydro (water) + lysis (breaking)
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