B2 Flashcards
What does the nucleus do
Controls the activities of the cell
What does the cytoplasm do
Where most chemical reactions take place
Function of the cell membrane
Control passage of substances in and out of the cell
Function of cell wall
Made of cellulose and strengthens the plant cell
Function of chloroplasts
Absorb light energy and where photosynthesis takes place
Function of permanent vacuole
Contains cell sap in plants
What is diffusion
Particles going from a high to low concentration
What do plant cells have that animal cells don’t
Vacuoles and chloroplasts and cell wall
Name three plant organs
Stems and roots and leaves
What does the xylem do
Transports water and mineral salts from the roots of the plant to stem and leaves
What is the role of the phloem
Transports sucrose and amino acids between leaves and other parts of the plant
Where are xylem and phloem located
Plant roots centre
Where is bile produced and stored
Produced in the liver and stored in the gall bladder
Why is it important for cultures on agar plates to not be contaminated
Could result in growth in pathogens
Suggest 2 ways you could prevent contamination of a culture in agar
Sterilise Petri dish and store the plate upside down
