Biology

when it is like 100 degrees F outside (just about body temp) you feel hot instead of feeling perfect since its the same temperature outside as in your body?

Anyone tell me what effect colchicine has on cells in metaphase and why?

ok i have a few questions... 1. How does temperature effect enzyme reaction? How does it specifically effect catalase? 2. Summarize the general conditions necessary for effective enzyme activity. Are these conditions the same for each enzyme? Why or why not? 3. Explain why the enzyme catalase was still active even though the liver cells from which you obtained the enzyme were no longer living. Thanks in advance.

Here's a hypothetical genetics problem, we assume that simple Mendelian principles apply. There is a population that carries a recessive genetic disorder ‘r’, which is expressed only when an individual inherits two recessive traits, or 'rr'. If there is a starting population of two recessive carriers... "Nr" and "Nr". If they were to mate, show the resultant population frequency for the 1st, 2nd and 3rd generations, assuming that the individuals with the expressed form of the recessive disorder do not survive to reproduce. I.e. in each generation what will be the percentage of those who have "NN", "Nr", "rr". P.s. Don't be a stickler about the wording I kinda…

Would anyone know why vivia faba (broad bean) root tips in particular would be used to show the effects of colchicine in mitosis?

Is there any one know whether Al2(SO4)3 can catalyse the yeast respiration? When I put some yeast into a test tube that contains dilute H2SO4, dilute Al2(SO4)3 and glucose solution, and compaire with putting yeast into a test tube the contains just water and glucose as a control. I find that the tube containing Al2(SO4)3 have a faster reaction... I wonder to know why.

Hi! Can anyoe tell me what affect uv light have on the vitamin c content in lemon juice. please i realy need help on this...thnx

Dear all, I sm going to isolate the NOX gene from S.mutans, however i am still not sure about the procedure. Could u please give me a protpcol for that. Thanks a lot. One more question that: what is gateway system and please explain more for me Yours scincerely, satokaiba

Hi, Is there anybody can give me the strict definition of the following terms?(in terms of genetic) 1. mitosis 2. dorminant character 3. recessive character

Well i'm actually a designer, but in need of an answer to this question. What is the Nutritional Information for grass? Just your everyday grass. The one on the ground. I need the kind of stuff you get on the back of food packaging - Carbs, protein, fibre, fat, sugars... In fact, these: Calories Fat Saturated Fat Cholestoral Sodium Carbohydrates Fibre Sugars Protein I'm not expecting much feedback, but any help would be much appreciated.

Can anyone help me getting full text of this article, please? Thank you a bunch! http://www.ncbi.nlm.nih.gov/entrez/query.f...5&dopt=Citation Biochemistry. 1997 Feb 11;36(6):1467-78. The divergent 5' termini of the alpha human folate receptor (hFR) mRNAs originate from two tissue-specific promoters and alternative splicing: characterization of the alpha hFR gene structure. Elwood PC, Nachmanoff K, Saikawa Y, Page ST, Pacheco P, Roberts S, Chung KN.

Why does programmed cell death occur? Why do all cells have a death wish? Out of interest, what happens when cells die? The first 2 qns are cambridge interview qns

What is the 3D structure of a cell? Is it a sphere? Is it a cuboid? When we look at cells under a microscope, are the cells flattened?

This recent photo depicts what has been tentatively identified as the source of many sea serpent sightings. Let's see who can guess what it is. Mokele

During mitosis, the centrioles form the spindle fibres in a animal cell. During mitosis, spindle fibres are still formed in a plant cell but there are no centrioles. So how does this work then?

Can decomposition occur without other lifeforms? If an astronaut was to die on a planet complete with moderate temperatures and devoid of life would decomposition be possible? Could the bacteria living on or within the astronaut's body do the job?

I have taken the following question from Internation Biology Olympiad. I can't figure out the answer yet. 45 In the European population, about 1 in 2500 people suffers from Cystic Fibrosis, a genetically determined (descared), autosomal disease. Healthy parents have a child suffering from Cystic Fibrosis. The woman remarries a healthy man. What is the chance of a child from this second marriage suffering from Cystic Fibrosis: A 1 : 25 B 1 : 50 C 1 : 100 D 1 : 625

Hey, I'm trying to join in a summer program called GHP. I had to do an abstract on experiment for the field of Biology. i was wondering if anyone had any good suggestions on semi-sophisticated experiments so i can get into GHP. you could just list a topic, and i'll find out the rest. Thanks

If one looks at a cell during the cell cycle, the metabolic oxidation potential will increase when the cell is actively dividing. The reason this occurs is because of the change within the cellular membrane potential, i.e, lowers. The lowering of the cell membrane potential makes the inside of the cell membrane less negative. This causes the hydrogen bonding potential within the cell water to increase. This, in turn, will increase the electrophilc potential of the cellular water. Molecular oxygen is also electrophilic and is the terminal electron acceptor of the metabolism; oxygen will form water. With the electrophilic potential of the cell water slightly higher due…

Just a thought, why is it that we can't change our somatic DNA? I find it strange sometimes that after a few billion years of eukaryotic multi-cellular evolution we haven't been able to modify our somatic genes. does anyone know of organisms that can actually change its somatic DNA half-way through its development aside from mutations?

actually it's bigger, almost 10 feet tall and around 1100 pounds http://uwnews.org/article.asp?articleID=12619

I guess its mainly to mokele: Where do your get your snakes and other reptiles, local pet stores sells them but my wallet isn't fat enough.

What, from a biological perspective, differentiates the various races of humans? I've heard it said that race doesn't exist from a scientific perspective, and that there can be more genetic difference between (for example) two white men than between a white man and a black man. While I assume the latter can be true in extreme cases, generally I can't see how this sort of viewpoint makes any sense. Human races evolved in different environments, and clearly there are differences, even if they are, potentially, only external ones. Of course, at the other end of the spectrum, there are those who claim that certain races are in some way more capable than others, and whi…

How do mammals react when the environmental temperature is much higher than their body temperature in a short term? I'd think they still consider to increase the heat loss rather than doing to reduce the heat gain.

I was just wondering... does anyone know if Bufotoxin is soluble in water?