12930 DIVERSITY - UNICELLULAR PROTOCTISTS

Please help with ideas: A report on DIVERSITY IN SUPPORT STRUCTURES AND THEIR FUNCTIONS IN UNICELLULAR PROTOCTISTS.

Identify what characteristic is required to form multi-cellular organism.

Identify what characteristic is required to form multi-cellular organism. Does the eukaryotic cell has it and the prokaryotic doesn't

signaling

compare and contrast signaling by neurons which secret neurotransmitters at synapses to signaling carried out by endocrine cells, which secretes hormones into the blood, Discuss the relative advantage of the two mechanisms.

g protein

Siganl tansducing tirmeric G proteins consist of three subunits designated as alpha, beta, gamma. Suppose you have isolated a mutant G alpha subunit that has an increased GTPase activity. What effect would this mutation have on the G protein and the effector protein? Why?

cell signaling

how is it possible that the same first messenger such as epinephrine can evoke different reponses on different target cells? That the same second messenger such as cAMP can also evoke different responses in different target cells?