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4

Your thinking is correct based on typical carbohydrates, but glycerol, the backbone of the phospholipid, is a 3-carbon carbohydrate that is usually derived from glucose. It is not a sugar, but it does fall into the general class of polyols (aka sugar alcohols) that are a type of carbohydrate. A carbohydrate definitely is an important structural part of the ...


3

There's nothing wrong in your statements! Maybe your professor was talking about glycolipids, that are lipids (also phospholipids) with a carbohydrate attached; they can be found on the outer surface of all eukaryotic cell membranes. They are important because they work as a recognition site for specific chemicals or for antibodies.


4

Disclaimer: This is my understanding of the egg anatomy as a general biologist. There is most certainly better references and sources out there to explain this (please add better references if you know of any). If I understand you correctly, your question is why we do not see cell organelles in a cracked or boiled egg. If so, your question seems to stem ...


12

The membrane bilayer is held together by hydrophobic forces. This is an entropy driven process. When a greasy or hydrophobic molecule is suspended in water, the water molecules form an organized "cage" around the hydrophobic molecule. When two hydrophobic molecules come into contact, they force the water between them out. This increases the entropy because ...


0

There is a vast amount of knowledge regarding the composition and function of mitochondria. You might want to head to http://www.pubmed.com and search reviews on mitochondria and S.cerevisiae as keywords. You might also want to check sites such as http://www.mitoproteome.org/ that are dedicated to this kind of information.


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100kg human = 1kg dna = 50g telomeres (where 100kgMice=1kgDNA=100gTelomeres), Human average telomeres are ~15KB, so we simply calculate 15000/100= 150bp = 1%, so we lose 1% of our telomeres per division. So humans' cells must have about 100 divisions per life time. Thus human Cells Divide on average (considering different tissue types differ in division ...


2

What may be confusing is that the myelin is wrapped around the membrane of the axon. The easiest way to see this is in cross-section: From here. The axon is indicated by #1 in the diagram and the myelin sheath is #4 The intracellular space (as represented by the horizontal resistors in the case of your model of the axon) is the fluid, replete with ...



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