Cell Physiology Flashcards
(22 cards)
The balanced equation for photosynthesis…
sunlight
6C02 + 6H20——-> C6 H12 06+ 602
carbon water glucose oxygen
dioxide
chlorophyll:
the green chemical in plants that traps light
diffusion:
is the random movement of molecules from an area of high concentration to an area of low concentration
osmosis:
is the diffusion of water through a semi-permeable membrane
active transport:
ENERGY IS REQUIRED to transport molecules against the concentration gradient
passive transport:
movement across the membrane along their concentration gradient, without an input of energy
phagocytosis:
a type of endocytosis in which cells “eat” by taking in large particles or other cells
pinocytosis:
a type of endocytosis in which cells “drink” by taking in droplets of fluid
A 5% sugar solution is contained inside a semi-permeable membrane. If it is placed in a 7% sugar solution then it will blank and in a 3% solution it will blank
shirk and expand
hypertonic:
having a higher concentration of solute
hypotonic:
having a lower concentration of solute
istonic:
having the same concentration
stomata:
small openings in the lower epidermis that allows C02 in for photosynthesis and 02 out
xylem:
plant vascular tissue that carries water and minerals up the plant
pholem:
plant vascular tissue that carries sugars produced by the leaves down the plant
The small size of cells and folding membranes increases the…
-surface area (roots have “root hairs” for this purpose)
phototropism:
when a plant bends to ward a light
tropism:
a plants’s response to stimulus
gravitropism:
is a plant’s growth response to the force of gravity
negative gravitropism:
when a plant grows upward
positive gravitropism:
when a plant grows downward
nastic response:
a plant’s reaction to touch (ex. venus flytrap)
