paper 3

Question 1

importance of energy transfers

Answer 1

photosynthesis
synaptic transmission/ stimuli and responses
respiration
absorption (incs everything)
nitrogen/phosphorus cycle

Question 2

importance of responses to changes in external and external environment of an organism

Answer 2

blood glucose
osmoregulation
control of heart rate
nervous system- response to stimuli, receptors, conduction, transmission
tropisms

Question 3

importance of the control of processes in organisms

Answer 3

blood glucose
osmoregulation
transcription factors and tumour suppressors and RNA interference
control of heart rate
nervous system-sodium potassium pump?

Question 4

importance of proteins

Answer 4

transcription factors (are proteins)- meth/acety/ siRNA affecting translation
2nd messenger
photosynthesis
enzymes
enzymes in transcription and translation