| Subject | Date Asked | Expert |
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| Daughter's eye color | 7/7/2009 | Dana Krempels, Ph.D. |
Q: I am mixed with afghan and polish. My babies father is mixed with black, german a small percentage ...
A: Human hair, eye, and skin color are very complex and difficult to predict, because each of these ...
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| I need help answering questions | 7/2/2009 | John Locke |
Q: What is absent from a bacterial cell? Why are gases hotter than liquids or solids?
A: These questions are fairly vague and broad, but I can help direct as to their answers. Bacteria lack ...
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| Biology | 7/1/2009 | John Locke |
Q: Why were humans unaware of microrganisms for most of thier history?
A: The most likely reason for this lack of awareness was a lack of sufficiently complex scientific ...
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| How much can a Masters in Microbiology can pay? | 7/1/2009 | Florence M Rollwagen |
Q: I am a graduate of Microbiology from India,& want to pursue Masters in the same in US.I am not sure ...
A: A microbiologist with a Master's degree can earn about $40-$60 thousand dollars per year, depending ...
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| transcription: where is the promoter? | 7/1/2009 | Dana Krempels, Ph.D. |
Q: where the promoter is located ?? is it on the template strand or the coding strand ? by logic it is ...
A: The promoter is where the RNA polymerase attaches to begin transcription of a gene. Therefore, it ...
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| skin and hair color! | 6/30/2009 | Florence M Rollwagen |
Q: can the environment affect the baby traits,like hair and skin color. as there is a fair blonde ...
A: Inheritance of skin, hair and eye color are polygenic. That means that several genes contribute to ...
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| biology | 6/29/2009 | Florence M Rollwagen |
Q: when human dies,which dies first, heart or mind
A: When you say "die" do you mean loss of awareness? What I mean is that people can be rescued from a ...
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| Molecular Clocks | 6/26/2009 | Florence M Rollwagen |
Q: I'm an undergraduate working towards a degree in Ecology and Evolutionary Biology. Through my ...
A: It's true, the use of molecular clocks as evolutionary tools has become more refined over the years. ...
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| evolution nonsesnse | 6/26/2009 | Florence M Rollwagen |
Q: a while ago I wrote and you said that there is no evidence of creation at all and that evolution is ...
A: Kevin: I see you are still asking questions that have no answers. 1. There is plenty of evidence ...
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| Hair genetics | 6/26/2009 | Walter Hintz |
Q: I was wondering if you can solve my query. Both my partner and I have red hair - I have black/brown ...
A: Dark pigments are dominant over light. Red heads with brown eyes are less common then red hair and ...
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| Hello | 6/23/2009 | Florence M Rollwagen |
Q: What is another name for Megasporangium?
A: I don't think there's another name. It is part of the female reproductive organs of plants. ...
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| Stomach Acid | 6/23/2009 | Shweta Mishra |
Q: Is it true that stomach acid is strong enough to melt razor blades or similar materials?
A: The pH of gastric acid is 2 to 3 in the human stomach lumen. This is considered highly acidic. ...
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| Fruit experiment | 6/23/2009 | John Locke |
Q: We have been doing an experiment on preserving apples. We put a half an apple in lemon juice, water ...
A: I can answer some of your questions broadly, but I unfortunately cannot determine the exact reason ...
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| Weight gatn | 6/22/2009 | Shweta Mishra |
Q: Is it possible to gain more mass than the food and liquid weigh that we consume over a 72 hour ...
A: Dialysis cannot rid the body of fluid as effectively as healthy kidneys that work around the clock. ...
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| EYE COLOR | 6/22/2009 | Chris Bemes |
Q: My mother has green eyes, my father has hazel (brown/green) eyes. I have hazel (brown/green) eyes ...
A: You are correct, the genes for brown eyes are dominant, but quite often two brown eyed parents will ...
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| Microscopy/Cell biology | 6/22/2009 | Paras Anand |
Q: Hypothetical question. If I am studying a protein which is localized to the center of the cell, ...
A: You have to make z-section of the fixed cells in which nucleus is stained with DAPI. Labeling your ...
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| Biology | 6/21/2009 | Shweta Mishra |
Q: Bob and Sally recently married. Upon deciding to plan a family, both Sally and Bob find out that ...
A: The question tells that both Sally and Bob are heterozygous which means they both are carriers of CF ...
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| Biology | 6/21/2009 | Florence M Rollwagen |
Q: Transcription: During the process of transcription, the information in the DNA codons of a gene is ...
A: This is obviously a homework question, but I'll send you to a couple of websites that will help. ...
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| Biology | 6/21/2009 | John Locke |
Q: Eukaryotic cells can divide by mitosis or meiosis. In humans, mitosis produces new cells for growth ...
A: The topic of genetic variability in sexually reproducing organisms is a fairly complex one, more so ...
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| Ants and Microwaves | 6/20/2009 | Paras Anand |
Q: Not sure I'm asking the right person but here goes. I was in a hurry the other day and threw a ...
A: Honestly, I do not know the answer. However, this question has been raised in many forums and I ...
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| Ants and Microwaves | 6/20/2009 | John Locke |
Q: Being somewhat in a hurry the other day, I popped a burrito in a microwave in which about a dozen ...
A: Microwaves work by exciting dielectric (insulating or nonconductive) substances within food like ...
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| Is marine biology a good base for vet school? | 6/20/2009 | Walter Hintz |
Q: I saw you answer an earlier question related to marine science and vet school, but my question is ...
A: It looks to that the ideal job for you is as a vet specializing in the health and care of marine ...
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| hai | 6/19/2009 | John Locke |
Q: What 'M' is the mainly found in the body paet of the sperm?
A: I suspect the "M" you're describing is mitochondria, which are present in high concentrations within ...
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| appearance of blood drained body. | 6/18/2009 | Walter Hintz |
Q: In my fictional story, I wanted a young body to be found where it had been completely drained of ...
A: Since blood is mostly water a person can drink as much blood as water. I have seen a person drink ...
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| Classification | 6/18/2009 | Walter Hintz |
Q: I need to explain, with an example, how technology has changed the way we classify an organism. The ...
A: The classification of all livings is based upon observable differences in morphology and in DNA. ...
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| lowering pressure during the drying process | 6/18/2009 | Florence M Rollwagen |
Q: I would like to know if lowering pressure will decrease the boiling point of water , will this also ...
A: Yes, lowering the pressure will decrease the boiling point of water. People who live at high ...
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| Itching and scratching | 6/18/2009 | Walter Hintz |
Q: What is the scientific basis for when we feel itchy in some part of the body, that we get this urge ...
A: The sensory neurons in skin, those that are stimulated by touch which include hot,cold,pressure, ...
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| appearance of blood drained body. | 6/17/2009 | Walter Hintz |
Q: In my fictional story, I wanted a young body to be found where it had been completely drained of ...
A: I see a couple of problems here. IT woul dnot be possible to every last drop out of the body ...
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| Itching and scratching | 6/17/2009 | Walter Hintz |
Q: What is the scientific basis for when we feel itchy in some part of the body, that we get this urge ...
A: It is thought that an itch is stimulation of free nerve endings, the skin receptors which are the ...
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| biology | 6/16/2009 | Shweta Mishra |
Q: lipase is a digestive enzyme that digests fat droplets in the basic conditions (NaHCO3 is present) ...
A: tube 1 = no digestion because no lipase enzyme present tube 2 = no digestion because no basic ...
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| Antibody | 6/15/2009 | Florence M Rollwagen |
Q: outline the hybridoma method for the production of a monoclonal antibody. Thanks a lot
A: Warm, when are you going to stop asking homework problems? Just look on the internet: ...
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| Hybridoma method | 6/15/2009 | Shweta Mishra |
Q: outline the hybridoma method for the production of a monoclonal antibody. Thanks a lot
A: 1- The mice is immunized with the antigen against which the antibody is to be produced. When a ...
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| photosynthesis | 6/14/2009 | John Locke |
Q: What is the source of oxygen atoms in glucose formed by photosynthesis? Also the source of hydrogen ...
A: In photosynthesis, glucose is formed by the interaction of sunlight (an energy source), carbon ...
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| Bones | 6/12/2009 | John Locke |
Q: 1. What is the bump a person gets on their head or hand when their bone hits something hard? 2. Is ...
A: I think that the bumps you are referring to may be from hematomas, which are masses of red blood ...
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| Citric Acid Cycle | 6/11/2009 | John Locke |
Q: I am a 2nd year student at university and studying for a Biochemistry exam. I was curious to know ...
A: The citric acid cycle--also known as the Krebs cycle or tricarboxylic acid cycle--does involve the ...
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| bacteria - pilus & plasmids | 6/11/2009 | Florence M Rollwagen |
Q: I was wondering if there would be a way to develop some sort of vaccine or treatment that would stay ...
A: Alas, bacteria also transfer genetic material via transduction (transfer via bacteriophage) and ...
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| microbiology - bacteria biofilms | 6/11/2009 | Florence M Rollwagen |
Q: Would it be possible to develop some sort of vaccine or treatment that would stay in our bodies ...
A: Bryan: Bacterial biofilms are almost universal, occurring in nature on rocks, leaves and boats. ...
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| blood from body | 6/10/2009 | Dana Krempels, Ph.D. |
Q: In my fictional story, I wanted a body to be found where it had been completely drained of blood (by ...
A: I'm not sure you have to abandon your idea of completely draining the body of blood. After all, ...
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| Physical resemblance of a child to one parent or the other | 6/10/2009 | Dana Krempels, Ph.D. |
Q: I heard from a friend that there is a tribe in Africa whose people believe that the main physical ...
A: Your friends hypothesis is creative, but it is not correct. A baby's traits are determined by a ...
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| biology | 6/10/2009 | Shweta Mishra |
Q: how do you determine an individuals sex?
A: There are many ways of determining an individuals sex. 1- By physical characteristics observation ...
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