upcoming unit test Flashcards
what are the different transport mechanisms in cells
diffusion, osmosis, facilitated diffusion, active transport,endocytosis, exocytosis
what is exocytosis
the process of vesicles fusing with the cell membrane to REALEASE CONTENTS
what is endocytosis
the process by Wich cells engulf substances, BRINING THEM INTO the cell.
active transport
direct use of ATP to transport molecules, goes against the gradient
Wich of the transport processes is used in bulk transport
exocytosis, and endocytosis
what is osmosis
the movement of water molecules across a membrane, going from and area of high solute concentration to low.
what is the primary function of the cell membrane
to act as a selective barrier for Wich substances come in and out
all cells have a….
cell mebrane
a procreuyatik Is different from a eukaryotic cell because
its much simpler and doesn’t have a nucleas only a nucleotide
Wich process requires atp
active transport
what is photosynthesis
the process where plants use light to make energy
what is cellular respiration
how plants make energy in the night or winter
what are the products and reactants of photosynthesis
co2 H20 are the reactants and glucose h2o and o2 are the products
what are the products and reactants of cellular respiration
glucose and o2 are the reactants and ATP h2o and co2 are the products
where does photosynthesis occur
chloroplasts in plant leaves
where does cellular respiration occur
michtochondria
if a molecule is larger what does that mean for the SA/volume ratio
the larger something is the lower the SA/V ratio meaning its harder for molecules to enter or leave
what is a hypotonic solution
a solution that when a cell is placed inside of it it will burst because its low solute
what is an isotonic solution
same amount t of solute inside and outside the cell
what do lysosomes do
digest material
what is an example of active transport
sodium potassium pump
how do substances move in active transport
against there gradient, low to high
how does water move in osmosis
high water concentration to low water conentration
where is ATP produced
michtochondria
what’s the difference between active transport and passive trasnport
active transport requires atp because It goes against the gradient
what in the cells uses ATP to pump water and molecules
contractile vacuole
what is phagocytosis
when a cell engulfs molecules and puts them into a vacuole and get digested
what is endocytosis
when ur cell brings in molecules and USES them
what is pinocytosis
when a cell takes in dissolved particles and drinks them and puts them into a vesicle
is pinocytosis a form of active or passive transport
active because it requires atp
is phagocytosis passive or active transport
active because it requires atp
are endocytosis and exocytosis active transport or passive
active be cause they require energy
wheres ATP produced
michtochondria
what dissolves molecules taken in
lysosomes
what is the function of RNA polymerase
connects to the untranscribed DNA in the nuclease and converts it to mRNA that is able to leave the nucleus
cells that are larger have a ——- SA to V ratio
smaller
what are the two main parts of the MODERN CELL THEORY
cells are the basic units of structure and function in living things. and all cells come from pre existing cells
how is ATP REALEASED
when a phosphate group is removed from ATP and it becomes ADP
