The Cell
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Regulates movement of materials in and out of the cell: Cytoplasm ribosome Plasma membrane golgi complex
Plasama membrane
Microfilament plays a role in ____ and ___ _____
muscle contraction and cell division
lysosome
digests substances brought into cell and destroys old parts
Rough ED is studded with ribosomes and produces what?
membrane
smooth endo plasmic reticulum
detoxifies drugs and produces membrane
nucleolus
produces components of ribosomes (RNA and Proteins)
Ribosomes begin what process
Protein synthesis
the _______ provides the cell with energ through breakdown of glucose during cellular respiration
Mitochondrion
maintains cell shape and forms tracks on which vesicles move? microtubule microfilament mitochondrion
microtubule
passive transport
movement across the membrane that doesnt require energy simple diffusion facilitated diffusion, osmosis
Active transport
movement across the membrane that requires energy
role of cholesterol in plasma membrane
helps maintain membrane fluidity
true or false: simple diffusion: Movement of a substance following a concentration gradient, from high to low concentration resulting in equal distribution
TRUE
Facilitated diffusion
requires a carrier protein
osmosis
water moves from high concentration to low concentration
hypertonic solution
greater solute concentration
isotonic has what amount of solute concentration
same
hypotonic has what amount of solute concentration
less solute
two characteristics of active transport
Requires energyMovement from a region of lower to higher concentration with the aid of a carrier protein and energy, typically ATP
phagocytosis is what type of endocytosis
cell eating -large particles or bacteria
Pinocytosis is what endocytosis
cell drinking - droplets of fluid
exocystosis
process by which a membrane - bound vesicle from inside the cell fuses with the plasma membrane and spills contents outside
true or false: the rough endoplasmic reticulum contains ribosomes that guide the process cellulose synthesis
the rough endoplasmic reticulum contains ribosomes that guide the process protein synthesis
smooth endoplasmic reticulum
lacks ribosomes Involved in the production of phospholipids, carbohydrates and detoxification of alcohol (hepatocytes)