Bioenergetics + Plants Flashcards
Define photosynthesis
endothermic reaction where energy is transferred to the chloroplasts via light
What is the euqation for photosynthesis
Carbon dioxide + water – (light energy) —> glucose + oxygen
6CO2 + 6H2O –> C6H12O6 + 6O2
What diffuses through the stomata
CO2 diffuses into the plant thru the stomata and oxygen diffuses out
How does water enter the root hair cells
by osmosis
What do vascular bundles do
veins that support the leaf and transport water
What is the upper surface of the leaf protected by
waxy cuticle to stop water loss
Why is the upper epidermis thin
to allow light to pass through
What does the palisade mesophyll perform
photosynthesis
What is the purpose of the spongy mesophyll
air space for gas diffusion
What does the lower epidermis have
stomata to allow gases to diffuse
What does the leaf cross section look like
study diagram in nots
Define a limiting factor
something that prevents the rate of PS increase further
Examples of limiting factors
- Temperature is LOW
- Shortage of CO2
- LOW light intensity
- Shortage of chlorophyll
Define Respiration
exothermic process used by all organisms to release energy
Define Anaerobic respiration
respiration without oxygen:
Glucose –> lactic acid