FINAL EXAM 2026/2027 WITH ACTUAL
CORRECT QUESTIONS AND VERIFIED
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What name is given to the process by which water crosses a selectively permeable membrane?
osmosis
When molecules move down their concentration gradient, they move from where they are
_____to where they are ______.
more concentrated, less concentrated
In facilitated diffusion, what is the role of the transport protein?
Transport proteins provide a hydrophilic route for the solute to cross the membrane.
During active transport through cell membrane, sodium and potassium ions are transported
________ their concentration gradients.
against
What process moves materials into a cell via membranous vesicles?
Endocytosis
Which processes involves the cell engulfing extracellular fluid?
Pinocytosis
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,Unlike pinocytosis and phagocytosis, ________ is much more specific.
recepter-mediated endocytosis
What process moves materials out a cell via membranous vesicles?
Exocytosis
Phagocytosis,Pinocytosis, and Recepter-mediated endocytosis are the 3 types of endocytosis
endocytosis
The DNA double helix has a uniform diameter because ________, which have two rings, always
pair with ________, which have one ring.
purines, pyrimidines
A passive process in which molecules move from a region of higher concentration to a region of
lower concentration is called
diffusion
Diffusion of substance, down its concentration gradient, requiring no energy expense, is
Passive transport.
Pumping a solute against its concentration gradient is
Active Transport
Proteins that penetrate hydrophobic interior of lipid bilayer are known as
integral proteins
Peripheral proteins Proteins that are appendages loosely bound to the surface of the membrane
are known as
Peripheral proteins
Which of the following factors would tend to increase membrane fluidity despite temperature
drops?
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, More unsaturated phospholipids.
Which of the following processes includes all others? (osmosis, diffusion of a solute across a
membrane, transport of an ion down its electrochemical gradient)
passive transprot
In what way do the membranes of eukaryotic cells vary?
Certain proteins are unique in each membrane.
According to the fluid mosaic model of membrane structure, proteins of the membrane are
mostly
embedded in a lipid bilayer.
You disrupt all hydrogen bonds in a protein. What level of structure will be preserved?
primary structure
Which part of an amino acid is always acidic?
Carboxyl functional group
When one gene has an affect on the expression of another gene is known as
epistasis
When two or more genes contribute to the same phenotype, _____________ occurs.
epistasis
Sickle-cell anemia is an example of
epistasis
Skin color in humans is an example of (note the bell shaped curve)
polygenic inheritance.
An additive effect of two or more genes on a single phenotype is (quantitative)
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