Last Minute Additions Flashcards
What is a chromosome?
A long molecule of DNA
What is the equation for anaerobic respiration?
Glucose -> lactic acid + energy
What is the equation for aerobic respiration?
Glucose + oxygen -> CO2 + water
What is mitosis for?
Growth and repair
Asexual reproduction
What is meiosis for?
Creating gametes
What are some differences between and mitosis and meiosis?
One division / two divisions
46 chromosomes / 23 in each
Growth and repair / sexual reproduction
Genetically identical daughter cells / different
Anywhere in body / only in reproductive organs
Why are palisade leaf cells tall?
To give a large surface area for absorbing CO2
When do guard cells become turgid? Why?
When there is lots of water
So the stomata opens for gas exchange
Why are red blood cells shaped in the way they are?
Large surface area to absorb oxygen
What is the word equation for photosynthesis?
CO2 + water -> glucose + oxygen
Two environmental conditions that impact photosynthesis
Temperature
Position (in the shade)
Why are greenhouses effective?
Trap heat
Maintain high CO2 levels
Artificial light can be used
Can protect plants from pests
Fertilisers can be used
Three organelles not found in animal cells
Chloroplasts
Vacuole
Cell wall
Where is glucose stored in plants?
Roots
Stems
Leaves
What is the function of glandular tissue in the stomach?
Excretes protease enzyme
Which breaks down proteins in the stomach
Produces acid to kill bacteria and provide optimum pH
