Characteriaticas Of Living Organisms Flashcards
Some bacteria are able to carry out photosynthesis, despite not containing chloroplasts.
Using your knowledge of photosynthesis, suggest how this could be possible. [1]
Bacteria could contain chlorophyll; [1 mark]
Bacteria could contain enzymes that are capable of (catalysing the reactions for photosynthesis / production of glucose); [1 mark]
Bacteria could carry out a different type of photosynthesis to plant cells / not the same chemical reactions (used to produce glucose); [1 mark]
List three other ways pathogens can spread between people. [3]
Insects / animals / bites / vectors; [1 mark]
Contaminated food; [1 mark]
Contaminated water; [1 mark]
Touch; [1 mark]
In the air / coughs/sneezes / droplets; [1 mark]
If a patient is unwell with a bacterial infection they may take a type of medication called an antibiotic.
Different types of antibiotics affect bacteria in different ways, for example some damage the cell walls of the bacteria, and some prevent bacteria from reproducing.
Use the information provided to explain how taking an antibiotic would affect the bacteria that live in the gut. [3]
The number of bacteria in the gut will decrease / (some) bacteria will die; [1 mark]
This would happen because…
Cell wall destruction could cause the cells to burst/break open/rupture; [1 mark]
Prevention of reproduction would mean that when cells/bacteria die they are not replaced / that the death rate will exceed the rate of reproduction; [1 mark]
