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WorksheetsBiology Revision
Total questions: 8
Worksheet time: 7mins
What is the colour change if starch meets the iodine
blue-black
yellow
transparent
can't describe it detailedly
What is the real definition of diffusion?
water molecules with different actions connected to osmosis
The transition of different concentration of molecules
specific action with concentrations
The movement of molecules connected to the different speed of liquid or gas
What is the condition of osmosis
from gas to liquid
from high conc. of water to low
from high potential to low potential
from liquid to gas
The factors that influence diffusion (list 1 is okay)
(a)
In what condition active transport will happen?
higher conc. no energy
lower conc. energy
higher conc. and energy
in each condition it happens
What is the fundamental function of cell membrane?
form a barrier between the cell and its surroundings
to protect the cell from being denaturalized
to help the cell to detect itself
I don't know exactly
What is the purpose of biology learning
What is the main function of vacuole? ( 2 answers)
maintain shape
store salts and waters
water and other nutritions
guess?
