CSB332H1 Lecture Notes - Lecture 8: Growth Cone, Lateral Geniculate Nucleus, Chemotaxis

Growth cones...

a) contract and drag their axons

b) form through axon degeneration following Rho acivation

c) are consolidated by extension of old axon into new

d) are continually changing structures that arise from new membrane transported along the axon

e) are engorged by fat droplets resorbed from synaptic vesicle turnover

What type of microscope (see below) would you use to greatly magnify a tiny 3-D structure? Why?

Bright field, dark field, phase contrast, differential-interference, fluorescence, conofocal, transmission electron, or scanning electron

1. How does the illumination of the specimen differ in fluorescent microscopes compared to conventional bright field microscopy? In this answer you need to explain how the filter system works in a fluorescent microscope, the light source differences if any, and the way that fluorescent molecules behave in response to light. 1b. What are some advantages of fluorescence microscopy compared to conventional bright field staining techniques?