7.4 Flashcards
(13 cards)
Where is DNA kept?
In the nucleus
What is the cytoskeleton?
A network of thin protein fibers that keep organelles in place.
What is the purpose of a vacuole?
Temporary storage
What do plant cells have that animal cells do not?
Cell wall, chlorophyll, and chloroplast
Where can I find ribosomes?
In the Nucleolus
Where are proteins packaged?
In vesicles
What are Microtubules?
Hollow protein cylinders that can help assist moving substances in the cell
What is osmosis
The diffusion of water across a selectively permeable membrane.
When is dynamic equilibrium reached?
When the solute is equal in concentration on both sides of the cell.
What is a important factor maintaining homeostasis?
Regulating water flowing in and out of the cell.
False, because facillitated diffusion
What does the ATPase pump do?
Uses the energy to transport three sodium ions out of the cell while moving two potassium ions into the cell and maintains the level of sodium ions (Na+) and potassium ions (K+) inside and outside the cell.
Underneath the mechanical stage of your microscope, there is either a little metal lever or a thumbwheel that moves right or left. What is this mechanical feature and what does it do?
condenser adjustment that regulates the amount of light.
