Methyltransferase catalyzes the transfer of the methyl group on O6 -methylguanine to a cysteine residue on the enzyme, thereby restoring the normal G in DNA.

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#Id: 2192

#Unit 10. Ecological Principles

Sequential changes in community structure over physical distance, primarily influenced by time, constitute a chronosequence

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#Id: 1813

#Unit 10. Ecological Principles

Population sizes at various times

N_t = N₀e^rt

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#Id: 5646

#Unit 7. System Physiology – Animal

When light strikes the outer segment of Rod cells: 

Na + channels closed 

Hyperpolarizing receptor potential

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#Id: 9241

#Unit 6. System Physiology – Plant

PEP carboxykinase (PEPCK) C4 photosynthesis is more complex than the other two types

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#Id: 9380

#Unit 11. Evolution and Behavior

Innate behaviour

Reflex - Allow us to move in response to something in the environment.

The reflex which causes us to close our eyes when something flashes towards us, or to withdraw a foot when we step on a sharp object.