Bioenergetics Flashcards
What is meant by the term ‘limiting factor’?
A factor which is not at an optimum level to enable the maximum rate of photosynthesis e.g. temperature
What is the role of chlorophyll
To transfer energy from the environment and use it to
synthesise glucose from carbon dioxide and water.
List four types of micro-organism which can act as pathogens.
Viral diseases
Bacterial diseases
Fungal diseases
Protist diseases
Disease: Measles
Symptom: Fever, Red skin rash
Method of
transmission:
Control spread of disease by: Child vaccination
Caused by:?
Method of
transmission: Droplet infection from sneezes and coughs
Caused by: Virus
Disease:?
Symptom: Fever, cramp,
vomiting, diarrhoea
Method of
transmission: Food prepared in unhygienic conditions or not cooked properly
Control spread of disease by:?
Caused by: Bacteria
Disease: Salmonella
Control spread of disease: Improve food hygiene, wash
hands, vaccinate poultry, cook food thoroughly
Disease: Rose Black Spot
Symptom: Purple-black spots on leaves
Method of
transmission:?
Control spread of disease by: Remove infected leaves and spray
with pesticide
Caused by:?
Method of transmission: Spores carried via wind/water
Caused by: Fungus
Disease: Gonorrhoea
Symptom:?
Method of transmission: Direct sexual contact or body fluids
Control spread by: Use of a condom and treat
an infected person with antibiotics
Caused by: Bacteria
Symptom: Green discharge from penis or vagina
Disease:?
Symptom: Recurrent fever
Method of transmission: By a vector from an
infected person
Control spread by: Preventing breeding of mosquitoes
or use of a net to prevent being
bitten
Caused by: Protist
Disease: Malaria
Disease: Tobacco Mosaic Virus
Symptom: Mosaic pattern on
leaves
Method of
transmission:?
Control spread by:?
Caused by: Virus
Method of transmission: wounds in epidermis caused by pests
Control spread by: Remove infected leaves and control pests which are damaging leaves
Aerobic respiration
Oxygen required?
End products?
Oxidation of glucose
complete/incomplete?
Efficiency of energy
transfer is high or low?
Yes
Carbon dioxide and water
Complete
High
Anaerobic
respiration in
animal cells
Oxygen required?
End products?
Oxidation of glucose
complete/incomplete?
Efficiency of energy
transfer is high or low?
No
Lactic acid
Incomplete
Low
Anaerobic
respiration in plant
and yeast cells
Oxygen required?
End products?
Oxidation of glucose
complete/incomplete?
Efficiency of energy
transfer is high or low?
No
Ethanol and carbon dioxide
Incomplete
Low
Name three processes that organisms require energy for.
Chemical reactions to build larger molecules, keeping warm and movement.
Write down the word equation for aerobic respiration in a plant cell.
glucose + oxygen ——> carbon dioxide + water
Write down the word equation for anaerobic respiration in a yeast cell.
glucose ——> carbon dioxide + ethanol
