After crystal violet staining, the Gram-positive bacteria may appear dark blue or violet. The cell wall of gram positive bacteria have thick peptidoglycan layer, thus it retains the crystal violet stain compared to gram negative bacteria.
Complex sugars are called polysaccharides. The correct answer is C. The Latin prefix poly- means many, so the entire name of this saccharide means that there are many atoms of sugar in it, which makes it a complex sugar. Di- in disaccharide means 2, and mono- in monosaccharide means 1, neither of which is complex.
It's not just a blood clot, it can be an air bubble or piece of fatty deposit. It gets lodged in a blood vessel, though, so you're correct.
The possible answers are :
A. it makes up the outer layer of the brain
B. it's composed of an axon.
C. it transmits nerve signals from one area of the CNS to another.
<span>D. it's composed of dendrites
The correct answers are A and D
The gray matter of the brain is made out of nerve cell bodies, dendrites, and unmyelinated axons. The outer layer of the brain's cortex is made out of the gray matter and the inner layers are made out of white matter.
The white matter is made out of </span>myelinated axons that transmit nerve signals throughout the nervous system. The white matter is white because the myelin that surrounds the axons is white.
