Tuesday, March 22, 2011
Cloning Pets
I never knew that people actually wanted to clone their pets. I guess it is a kind of cool idea that you could have a new and improved cat or dog, but it is not for me. The notion of them playing God or not playing God doesn't bother me, but I just think it is morbid. If my beloved pet died, I would not want to replace it with its clone. That seems disrespectful to the pet's memory. "Oh no Fluffy died... Eh, we'll just get a new one. Same difference." I know it is more complex then that for the people actually getting this done and they want to have their pet live on, but I still don't care for it. Cloning, to me, does not bring a person or pet back to life, it is like an identical twin being born later on. Cloning does not change my idea about death but I feel like it gives people the artificial feeling of prolonging life.
Wednesday, March 9, 2011
Cellular Respiration
This blog was a though one for me to get my mind wrapped around but I'll give it my best shot. Anaerobic respiration is acquiring energy while not using oxygen-- it uses fermentation. I think that it is safe to say that humans could not survive with only anaerobic respiration because we are in a constant need for oxygen (brain and heart), and if we didn't use oxygen we would die. Another downside is that anaerobic respiration makes way less ATP then aerobic respiration. Anaerobic respiration is pretty much used, for us, with rigorous exercise when our fast-twitch muscles run out of oxygen.
"Warm-blooded" animals maintain there body temperature through metabolism (aerobic cellular respiration) whereas "cold-blooded" animals do not. This means that warm blooded animals are going to need to use their metabolism more, eat more food, thus create ATP. The more ATP they have, the more energy they have, and the more active they are. Cold blooded animals, in cold weather have their body processes slowed down in cold weather and they do not use their metabolism to mediate their temperature so they don't require all that energy via respiration.
Anaerobic respiration, although it is not used a lot in us humans, it is used in my friends yeast and bacteria. Where would we be without them?
"Warm-blooded" animals maintain there body temperature through metabolism (aerobic cellular respiration) whereas "cold-blooded" animals do not. This means that warm blooded animals are going to need to use their metabolism more, eat more food, thus create ATP. The more ATP they have, the more energy they have, and the more active they are. Cold blooded animals, in cold weather have their body processes slowed down in cold weather and they do not use their metabolism to mediate their temperature so they don't require all that energy via respiration.
Anaerobic respiration, although it is not used a lot in us humans, it is used in my friends yeast and bacteria. Where would we be without them?
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