Cells and Microscopy and Microorganisms
Name two parts of a plant or animal cell
nucleus, cell membrane
What is diffusion
movement of particles from high to low concentration
what are two methods of asexual reproduction
cuttings and graftings
What are the components of blood
plasma, red blood cells, white blood cells, platelets
what is the function of the retina
detect light and send signals to brain
what is the function of the mitochondria in the cell
produce energy through respiration
Difference between osmosis and active transportation
osmosis is passive and involves water, active transportation needs energy
What are two methods of birth control
condoms and birth control
what is the funtion of red and white cells
red- carry oxygen
white- cells fight infection
what is the difference between plant and animal cell under a microscope
plants have cell wall and chloroplasts animal cells do not.
why is active transportation important for living organisms
allows cells to absorb nutrients against the concentration gradient
what conditions are needed for seed germination
water, oxygen and suitable temperature
what is the internal structure and function of the heart
four chambers and valves that ensure one way blood flow
One positive and negative of bacteria
positive - digestion
Negative- causes diseases
What is transpiration in plants
loss of water vapor through the stomata of leaves
What are two soil conservation techniques used in farming
crop rotation and crop ploughing
Name one example of each: a virus, a bacterium and fungus
HIV, E.Coli and Yeast
xylem transports water, phloem transports food