Basic Bio questions, I will rate you Bacterial cells living on and in your body
ID: 87665 • Letter: B
Question
Basic Bio questions, I will rate you
Bacterial cells living on and in your body outnumber your own cells? If bacteria are so bad, why are the “part of” us?
Why do cells require a large surface area to volume ratio to exist? Some neurons are a meter long? That’s a lot of cytoplasm! Do these cells defy this requirement and therefore have a low surface are to volume ratio?
What’s the difference in resolution between your eye and a typical laboratory compound light microscope? Between a light microscope and a TEM?
Light micrographs are obtained by directing photons through a specimen. In general, how are TEMs and SEMs obtained? What’s the fundamental difference in the images obtained from these two different types of microscopes?
In terms of quantity, 98% of a plasma membrane is lipid (most of which are phospholipids) and 2% is protein. However, 50% of the weight of a plasma membrane is lipid and 50% is protein. What does this latter fact say about proteins in the membrane?
How does cholesterol in the membrane affect membrane fluidity? If cholesterol is so important in maintaining the integrity of membranes, why is it often seen as bad for you?
What is the difference between and integral membrane protein and a peripheral membrane protein? How does a carrier protein differ from a channel protein? What are the 3 different ways in which channels are gated in the human body?
What literally are ABO blood group antigens? How does A differ from B, AB and O?
Explanation / Answer
Bacteria are present in and out of our body and they outnumbered our own cells. Even though they are present everywhere, they are not always bad or ugly for us infact some of the species of bacteria are beneficial for us and they play an important role to keep us healthy.
One can say that a human cannot live without bacteria because human are somehow dependent on bacteria for degradation or fully digestion of food as they helps in breakdown of carbohydrates and play role in the setup of checks and balances in the immune system & also protect the cells in our intestines from invading pathogens. When our inside body is having good bacteria, outside bacteria don’t get chance to invade or intrude in body
There is no hard and fast rule that bacteria are always beneficial in and out of our body because when our immune system is compromised or our normal microbiome get disrupted, these beneficial bacteria get chance and turns into bad or harmful bacteria.