BIO202 - Cells and Tissues Flashcards
Cells are the…
fundamental units of life
What are the three components of a cell?
Membrane
Nucleus
Cytoplasm with
organelles
What does the cell membrane do?
Regulates movements of
substances into and out
of cell.
What is the net movement of particles (O2, CO2, H2O) from HIGH to LOW concentration?
Diffusion/filtration.
What is the “Diffusion” of water across a semipermeable membrane?
Osmosis.
What attempts to equalize solute concentration?
Osmosis.
Isotonic solution means…
No net movement (remains at its original size)
Hypertonic solution means…
Shrinkage.
Hypotonic solution means…
Swelling.
From high to low concentration BUT still requires a carrier protein, and does NOT require ATP?
Facilitated diffusion.
From low to high, against
concentration gradient is…
Active transport.
Uses energy stored in Na+
/H+ concentration gradient is…
Secondary active transport.
Inherited disorder/ genetic
mutation is…
Cystic fibrosis
Clathrin proteins form
coating molecules are…
Endocytosis-protein coatings
Avascular means…
Without blood vessels.
