Cell Biology Questions
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structures within the cells that perform specialized functions are
the control center of a cell; contains DNA; controls growth and reproduction
a small dense area inside the nucleus; ribosomes are made here
rigid, inflexible structure that gives the cell structure and protection; found outside the cell membrane; made of polysaccharide cellulose; not selectively permeable; only in plant cells
has a nucleus and membrane bound organelle
outer boundary of the cell that regulates which materials enter and exit the cell; seperates the cell from the external environment; made of a phospholipid bilayer; are selectively permeable
has no nucleus and no membrane bound organelle; has DNA
a threadlike genetic material found in the nucleus; a strand of DNA
sac-like structures used to store water, salts, proteins, carbs, food, waste, and other materials; larger in plant cells
double membrane that separates the nucleus from the cytoplasm; made of proteins and phospholipids
clear jelly-like fluid inside the cell; main component is water
Select all of the cellular conditions that affect enzyme activity.
After a product is released from its active site, a(n) ______ can be used again in another reaction because it is not consumed or altered in the reaction.
A product molecule blocks enzyme activity by binding to a location other than the active site during ______ inhibition; on the other hand, a product molecule blocks enzyme activity by binding directly to the active site during ______ inhibition.
Competitive and noncompetitive inhibition are two mechanisms of
Phase cell is found in for most of its' life cycle.
Cancer cells tend to have a defect in a particular gene, what is that gene called
Chromatin coils, condenses, becomes visible.
The nuclear membrane, and nucleoli reappear.
Centromeres break and chromosomes start to move toward opposite poles of the cell.