Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
18 Cards in this Set
- Front
- Back
|
Atom |
The smallest unit of any living or nonliving thing |
|
|
Neutron |
Particles with no charge found in the nucleus of the atom |
|
|
Macromolecule |
A large molecule (ie- DNA, hemoglobin) |
|
|
Mixture |
A combination of two or more substances |
|
|
Solution |
A homogeneous mixture of a substance of smaller abundance (solute) dissolved into a substance of greater abundance (solvent) |
|
|
Suspension |
A mixture of two or more substances in a liquid that do not dissolve but distribute evenly throughout the liquid |
|
|
Cell membrane |
The external structure that houses the cell contents and regulates what travels into and out of the cell by way of many different proteins that act as gates, channels, or pumps; composed of a phospholipid bilayer |
|
|
Nucleus |
The largest of the organelles; contains the cell's genetic material, including DNA, chromosomes, genes, RNA |
|
|
Rough ER |
ER that has ribosomes bound to its surface; many proteins secreted by the cell are produced here |
|
|
Smooth ER |
ER that lacks ribosomes bound to its surface; many enzymes that synthesize important lipids and steroids are contained here |
|
|
Cilia |
Hairlike protrusions from the cell membrane used for moving substances around the cell |
|
|
Flagellum |
A tail like projection on the cell membrane used for cell motility, as on sperm cells |
|
|
Hypertonic |
A solution with a higher concentration of solute |
|
|
Isotonic |
A solution with the same concentration of solute |
|
|
Hypotonic |
A solution with a lower concentration of solute |
|
|
Osmotic pressure |
The pressure created from a solvent, such as water, diffusing across a semi-permeable membrane |
|
|
Filtration |
Movement of a fluid through a membrane with pores that restrict larger molecules from passing through but allow the passage of smaller molecules; based on mechanical pressure |
|
|
Dialysis |
Artificial filtering of waste and excess material out of the blood through a semi permeable membrane |
