Detailed stud 1. hard: with great effort e.g. looking hard at this picture. think hard and work hard 2. hardly: almost not e.g. he could hardly wait to hear the news There's hardly any coal left. 3. .. than employees did in 1979
26.1 Introduction 26.2 Carriers and channels form water soluble paths through the membrane 26.3 Ion channels are selective 26.4 Neurotransmitters control channel activity 26.5 G proteins may activate or inhibit target proteins 26.6 G proteins function by dissociation of the trimer 26.7 Growth factor receptors are protein kinases 26.8 Receptors are activated by dimerization 26.9 Receptor kinases activate signal transduction pathways