In research, phalloidin can be used to fluorescently label actin filaments within a cell. a. Briefly describe how this is possible, considering that phalloidin itself is not fluorescent. a. What is the purpose of the fixation step?
b. What is the purpose of the permeabilization step?
c. How staining with AO and DAPI is different form staining with phalloidin?
d. Why you think DAPI and other fluorescent dyes that label nuclei are commonly used in labeling protocols?

Explain why biological control methods are generally environmentally superior to chemical pest control methods.

Which anatomical plane is the only one that could not show both the sternal region and vertebral region

How do water’s relative densities as a solid and a liquid differ from that of most other substances? water’s solid and liquid forms have different densities, while most other substances have solid and liquid forms with similar densities. water’s solid and liquid forms have similar densities, while most other substances have solid and liquid forms with different densities. water’s liquid form is less dense than its solid form, while the opposite is true of most other substances. water’s solid form is less dense than its liquid form, while the opposite is true of most other substances.