What is the blind spot, and why does it occur?
What will be an ideal response?
The blind spot is the location in the eye where the axons of the ganglion cells pass through the retina. There are no receptors in this area.
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The endospore stain
A. is applicable to only a few groups of bacteria. B. usually shows the spores as green structures among a background of pink cells. C. uses crystal violet as the primary stain. D. is an example of a negative stain. E. is applicable to only a few groups of bacteria AND usually shows the spores as green structures among a background of pink cells.
Allergic reactions mainly involve
A. macrophages. B. monocytes. C. neutrophils. D. mast cells.
How could you monitor flower determination in a plant that is mutant for all three class E SEP genes?
A. You cannot, because the class E mutant cannot make proper flowers. B. Look for formation of sepals and petals. C. Measure levels of SEP protein. D. Measure levels of LEAFY and AP1 proteins.
In biological nitrogen-fixation,
a. ammonia is converted to nitrogen gas. b. nitrogen gas (N2) is converted to ammonia (NH3). c. ammonia is converted to nitrate. d. amino acids are linked into proteins in ribosomes. e. nitrate is converted to ammonia.