general biology
everywhere that life exists
What is the biosphere?
all organelles are made of cells, all existing cells are produced by other living cells, the cell is the most basic unit of life
what is cell theory?
flexible network of proteins that provide structural support for the cell
what is the cytoskeleton?
gap 1, synthesis, gap 2, and mitosis
what is the cell cycle?
process with the end result is 2 daughter cells genetically identical to the original cell
biodiversity is usually greatest near this particular area
what is the equator?
contains a nucleus, storehouse for genetic information, as well as other membrane bound organelles
what is a eukaryotic cell?
tiny organelles that link amino acids together
DNA synthesis occurs here
what is synthesis?
the joining of 2 gametes, one from each parent, resulting in genetically unique offspring
what is sexual reproduction?
one particular type of living thing, members of the same kind can reproduce
what is a species?
the cell membrane folds inward and fuses together surrounding a substance that is eventually broken down
what is endocytosis?
supplies energy to the cell
what is the mitochondria?
contains a critical checkpoint
what is gap 2?
divide and renew themselves, remain undifferentiated, develop into a variety of specialized cells
what are the abilities of stem cells
the maintenance of constant internal conditions through negative feedback
What is homeostasis?
the movement of water molecules across a semipermeable membrane from an area of higher to lower concentration
what is osmosis?
defends the cells from invaders like bacteria and viruses
what are lysosomes?
this cell divides its cytoplasm into 2 cells by forming a furrow that is pulled inward by filaments
what is an animal cell?
totipotent, pluripotent, multipotent
what are the three types of stem cells?
a substance capable of dissolving another substance
what is a solvent?
states that the cell membrane is flexible and not rigid with phospholipids in layers that allow the membrane to behave like fluid
what is the fluid mosaic model?
small membrane bound sacs that are used for storage and transportation
what are vacuoles and or vesicles?
division of the nucleus and its contents at the end of the cell cycle
what is mitosis?
grows into cells of a closely related cell family
what is a multipotent cell?