Tutor profile: Laela B.
Subject: Organic Chemistry
What is an electrophile?
Electrophiles are attracted to electrons and can be an ion, or a constituent on an organic molecule that is either neutral, or positively charged.
What is the difference between gram positive and gram negative bacteria?
Gram negative bacteria contain an outer membrane, but thin peptidoglycan layer in which only the counter-stain in retained, leaving a pink color from the safrannin. Gram positive bacteria do not have an outer membrane, but contain a thick layer of peptidoglycan that retains the primary stain, crystal violet, that appears purple.
Describe three essential components in animal cells, including their function.
1. Lysosomes: digestive vesicles found within the cytoplasm that dispose of unwanted particulates 2. Mitochondria: the power house of the cell because it provides ample ATP through oxidative phosphorylation 3. Plasma membrane: phospholipid bilayer that creates a semi-permeable barrier between cytoplasm and outside environment; contains integral membrane proteins that allow transport of ions and other molecules in and out of the cell
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