Choose the correct order of events in sea urchin fertilization. Select one: ОО a. Acrosomal reaction;...
A sea urchin egg is treated with an inhibitor that prevents the rise in intracellular Ca2+ right before fertilization. Which of the following events would be blocked by addition of this inhibitor? Choose one or more: A. formation of vesicles under the plasma membrane B. exocytosis of hydrolytic enzymes C. fertilization envelope rising from the cell surface D. entry of multiple sperm into the cell
31. Which statement correctly describes a difference be n ionotropic and metabotropic receptors! alonocropic receptors a tough secondary messenger b. Only oncopic receptors are membrane protein clonotropic receptors are directly linked and metabotropic receptors are indirect linked to lon channels d. Neurotransmitters are only involved with incroc receptors. e longropic receptors act owly, while metabotropic act quiddy w ould explan th 32. In an experiment, the membrane potential of a neuron is hyperpolated -120 mW. When an inhibitory neurotransmitter is...