BMCC BIO 425 Exam Questions and Correct Answers Updated

BMCC BIO 425 Exam Questions and Correct
Answers Updated
Question 1
Basic components of a cell
Correct Answer
plasma membrane, cytoplasm, nucleus



Question 2
Osmosis
Correct Answer
Diffusion of water through a selectively permeable membrane



Question 3
receptor-mediated endocytosis
Correct Answer
Enables cells to take in specific molecules that bind to extracellular receptors



Question 4
facilitated diffusion
Correct Answer
process of diffusion in which molecules pass across the membrane through cell
membrane channels



Question 5
cystic fibrosis
Correct Answer
hereditary disease in which cells make chloride pumps, but fail to install them in the
plasma membrane.




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,Question 6
Tonicity
Correct Answer
The ability of a solution surrounding a cell to cause that cell to gain or lose water.



Question 7
Organelle
Correct Answer
any of a number of organized or specialized structures within a living cell.(
Composed of molecules.



Question 8
extracellular fluid
Correct Answer
fluid outside the cell



Question 9
membrane lipids
Correct Answer
98% of membrane molecules are lipids: phospholipids, glycolipids, cholesterol



Question 10
Cytoplasm
Correct Answer
the material or protoplasm within a living cell, excluding the nucleus.(Organelles,
Cytoskeleton
Inclusions (stored or foreign particles)Cytosol (intracellular fluid, ICF)




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,Question 11
Atom
Correct Answer
Smallest particle of an element



Question 12
Omosis Notes
Correct Answer
•Crucial consideration for I.V. fluids
•Osmotic imbalances underlie diarrhea, constipation, edema
•Water can diffuse through phospholipid bilayers, but osmosis is enhanced by
aquaporins—channel proteins in membrane specialized for water passage
-Cells can speed osmosis by installing more aquaporins



Question 13
plasma membrane
Correct Answer
The membrane at the boundary of every cell that acts as a selective barrier, thereby
regulating the cell's chemical composition.



Question 14
Anatomy
Correct Answer
The study of body structure



Question 15
Cytoskeleton
Correct Answer
A network of fibers that holds the cell together, helps the cell to keep its shape, and
aids in movement




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, Question 16
Scanning electron microscope (SEM)
Correct Answer
improved resolution further, but only for surface features



Question 17
light microscope (LM)
Correct Answer
revealed plasma membrane, nucleus, and cytoplasm (fluid between nucleus and
surface)



Question 18
an organ
Correct Answer
Is a structure composed of two or more tissue types that work together to carry out
a particular function.



Question 19
Organism
Correct Answer
Is a single, complete individual composed of organ systems.



Question 20
Physiology
Correct Answer
The study of body function




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