When using an eia to study microtubules or other structures inside a cell, we first chemically fix the cell and then treat the cells with alcohol. what is the purpose of this alcohol treatment?
it makes holes in the cell membrane large enough for antibodies to pass.
it makes the membrane sticky so antibodies will bind and be taken up by receptor-mediated endocytosis.
it removes negative charges from the membrane, which would otherwise repulse the antibodies.
it prevents nonspecific binding of the antibodies to the cell membrane.

What causes the phospholipids to organize themselves the way they do

Researchers determine that the biodiversity in a woodland region is declining. they identify two major threats to the region's biodiversity, a method to address each threat, and the expected outcome of each method. this information is shown in the table. threat method number of species that benefit number of years to see benefit habitat fragmentation reforestation 450 8 introduced prey species biological augmentation 150 2 which statement is an accurate explanation of the information in the table? a. biological augmentation would benefit only a few species because it is typically not very effective. b. biological augmentation would take less time to be effective because it targets the majority of prey species. c. reforestation would take the longest time to be effective because trees take several years to grow. d. reforestation would not benefit many species because most forest species live on the ground.

Based on anatomical similarities, to which modern animal is dr. digger’s creature most closely related?