Biology Definition and 572 Threads

Hello I've read in my biology book "children with down syndrome develop different levels of mental and physical disability." But they all have an extra 21st chromosome... My question is what causes this difference?

It's basically a program where chemistry overlaps all aspects of biology. I am interested in understanding biological systems from the perspective of chemistry, and I would like to apply this knowledge to different areas of biology/chemistry such as synthethic biology, protein development and...

To be more precise I like marine sciences but I also like to learn physics. However I just don't want to go all in in either one of them because physics is mostly about programming which I do not like due to hard it is and marine sciences seem to have way too little physics/mathematics unless I...

Hi! I'm a new member to this site. :smile: I hope this is the right place to ask for opinions on which language to learn for science purposes. I want to become a research molecular biologist working in the field of genetics. I am comfortable in English currently. I've also started learning...

Humans, other animals, plants, fungi and almost all other forms of complex, multi-cellular life are known as eukaryotes. How eukaryotes evolved from simpler prokaryotic organisms is a major question in evolutionary biology. The current view is that eukaryotes evolved from the fusion between a...

Hi there, I was hoping I could get some advice to get on a path to become a Botanist, specifically one the deals in the Genetics Engineering of new Plants (not Pharming but something along the lines of creating new breeds of plant for consumption). I feel this is what I want to do with my life...

Can I major in Electrical Engineering and Biology and become a Biomedical engineer? I want to be a Biomedical engineer but the school I am going to only has environmental, electrical, and mechanical.

Homework Statement I need help creating flowchart for ID-ing an "unknown" organism. Unknown in quotes because I already know ID of organism. Homework Equations gram + (purple) tetrads and cocci forms yellow colonies on NA plate catalase + coagulase - Nitrate + oxidase (weakly) + Bacitracin...

I'm undergrad physics student and I have read some statistical physics like equilibrium statistical physics, Langevin model and Fokker-Planck equation. I have developed interest in application of statistical physics in biology like protein folding. So what are the other research topics that lie...

We all know those kinematic equations...! It is pretty much amazing that how knowing about a particle's velocity and acceleration at a given point of time governs its velocity at any other point of time... It is much cooler when you think deeper... How just mathematics is the language of...

Hi everyone, My details: Age: 26 Education: Bachelor's in Mass Media; Post-graduate Diploma in Journalism Work ex: 5 years for an international news agency covering pharmaceuticals and healthcare. I loved science in high school and was great at it, but couldn't continue due to some unavoidable...

Hi everyone, My details: Age: 26 Education: Bachelor's in Mass Media; Post-graduate Diploma in Journalism Work ex: 5 years for an international news agency covering pharmaceuticals and healthcare. I loved science in high school and was great at it, but couldn't continue due to some unavoidable...

Hi everyone, I am looking to work in a powerplant as a health physicist. I have been looking at requirements and they seem to be typically just a B.Sc in Health Phys + experience. Does anyone know if this is often what is needed? I am doing a dual hons in biology and physics and I want to...

I will be giving O levels in two sitting for may'17 and jan'18 . I aim to be a heart surgeon. I plan on taking Biology but I am confused if I should take Human biology or not. If I take , I will only be left with 6months of private coaching , I am also scared if I'll be able to bring good marks...

Hello everyone! I am really glad to be part of this group. I hold a Bachelor of Science with Honors in Molecular Biology from the University of Sydney. During the past 10 years, I built a strong career in the business side of research, working as a technical sales consultant, and despite the...

Hi everyone! In just about a month, I will be starting my IB courses in junior year high school. I have chosen Math SL, along with Economics Hl, Biology HL and Chemistry HL. However in the past few days I suddenly realized how I also really like physics (especially quantum mechanics and natural...

Any suggestion?

firstly I am a fresh graduate ... I studied biomedical physics and I am intending to get a master degree but I am hesitating about the field that i will study it ..! I am thinking about the Quantum Biology i need to know your opinion about this and to guide me how to choose the point of...

I am studying a particular gene whose expression decreases in certain types of cancer. I'm interested in finding out the mechanisms for this downregulation, specifically, which transcription factors and signalling pathways are involved. I have a hypothesis for the pathway involved, but in case...

I've seen a bit of research that relies on imaging methods like FLIR for input. My question adds a couple wrinkles: How could a robot Navigate without imaging? I.e., using only local sensors like a thermocouple or array of thermocouples. Extract navigation info from turbulent thermally...

Sir David Attenborough wonders into the wonderful world of the termites in South Africa to better understand the ways in which these amazing animals ventilate their homes, breed, and fight for survival. Brilliant video from BBC insect and wildlife show 'Life in the Undergrowth'.

In this remarkable BBC footage, Sir David Attenborough reveals the world of insects such as ants, stick insects, beetles and digger bees.

Found this abstract while browsing through some papers, and thought it was quite humorous: Endy, Galanie & Smolke. 2015 Complete absence of thebaine biosynthesis under home-brew fermentation conditions. bioRxiv doi:10.1101/024299 Full text freely available at...

Hi, I'm really stuck on this part of my AS biology homework. With reference to theenzymes catalysing the stages of glycolysis, explain how their activity can beaffected. Consider in your discussion if this is a form of intrinsic regulationor extrinsic regulation. 1) Hexokinase: 2)...

We know that DNA and other biological molecules have only one chiriality of two possible. Is here any explanation of this or any speculations about this?

How many states of awareness can the brain be in? For example awake and conscious, asleep and unconscious, sub conscious. Are there any other states? Is there a point where the brain is in a state of all of them? And finally when a person is day dreaming is he both conscious and unconscious...

Hi, My Modern Physics lecturer is of the opinion that the energy dissipated during exothermic reactions is due to infinitesimally small change in mass of the reactants. Similarly, he said that an infinitesimally small part of the food we eat gets converted into the energy using which we perform...

Hello, I want to learn biology from stratch for a hobby, I never studied it in school good enough so I want to do it now, should I go through entire Campbell Biology to grasp basic stuff? I want to note that I want to focus on bioinformatics as I progress One more thing to note is that I want...

So I am in the area in between years 10-11. I am currently on exchange and I have a lot of time so I thought I would study for year 11's topics so that the next few years would be easier. The main subjects I wan't to focus on are Biology and Chemistry. I had bought a book without doing any real...

I have a Master's degree in Physics and am planning to switch over to Biophysics and wish to know a but about the field in general in terms of the following aspects. I've had a few internships on Biophysics in the past and have loved working in this field. However, I have absolutely no...

How many genes does it take to make a living organism? Scientists at the J Craig Venter Institute published a paper today in the journal Science describing the design and synthesis of a bacteria containing the minimal set of genes required for that organism to live. Their work leverages their...

Homework Statement Choose each of the following statements that would be true regarding the brain or special senses. There could be multiple answers. a) Properly using the captive bolt should result in pupils that constrict in response to a bright light b) The part of the brain that releases...

I'm in search for a career that is 'earth' related. I also have interests in the ocean. So, my choices come down to; Earth Sciences & Marine Biology / Oceanography. Was looking for a career in the space industry, or renewable energy, but found most of it to be engineering based. And I don't...

Which are the most frequently used PDEs in cancer modelling? Are navier-stokes' equations and fluidodynamics equations used there?

Hey everyone. A friend of mine has recently finished high school and is unsure of whether she wants to pursue medicine or biomed engineering. She tells me that she's equally interested in both. However, she's currently inclined towards medicine, mainly because she has been told by certain people...

Hi everyone. Can someone please explain me how a two or three points test can be made, in the field of genetics? I've read of it in many books, but I'm looking for an explanation as clear as possible. Thanks in advance :)

Hello,My name is guy I am currently in high school learning biology as my "major"(not sure how to call it ) subject as well as ecology, I've been always interested in biology but recently I got stuck thinking what do I want to do in biology.Biology is like a tree that has many branches and I am...

I'm a biologist interested in physics. Biology is undergoing several revolutionary changes, but physics is interesting too! I am interested in the physical aspects of information processing in biological entities, things like: genetic control systems, information transmission through...

Ygggdrasil submitted a new PF Insights post What Causes Cancer: Bad Luck or Bad Lifestyles? Continue reading the Original PF Insights Post.

Hey guys, so I am finishing my bachelor in physics and start to thing about my next steps. I am burning for very fundamental research topics but have a feeling that I lack the mathematical skill (or interest) to go deeper into theoretical physics. I started to read some literature on evolution...

What inspired you to choose the major you are currently doing/did. Was there a certain topic that excited you as a child that lead you to do what you did in school? Perhaps you read about particle-wave duality, and that was enough to spark your interest, or quantum mechanics, or cell division or...

Ahoy, I was hoping to illicit advice on returning to physics after a stint in computational biology. I have a PhD in theoretical physics with a good number of physics publications in good journals, but unfortunately lacking in significant citations. At the end of the PhD, for various reasons...

Hi, I am having trouble filling these correctly! 1. After exercise the [a] pressure remains relatively unchanged while the (B) pressure increases. This is due to the increased cardiac [c] required during exercise. In some circumstances the [d] pressure may actually reduce slightly during...

I'm not, nor do I claim to be the best at physics, but I've come to share my interest, and learn as much as I can about one of my biggest interests in life, astrophysics. I'm doing A-Level physics at the moment; alongside maths, further maths, biology and philosophy, and a few online...

Hi, I love biology and want to go into research but I also love physics and want to become a physicist. In the UK you can only study one at degree level and there are no joint or double majors. So, I need some advice. Thanks

After I have done counting the corn and the result 267 yellow , 97 white , 144 purple ratio 9:3:4 respectively . Recessive - Epitasis ? I have no idea create a inheritance cross and the biochemical influence by genes interaction from this phenomena

Could I use "The intensity of muscle contractions" as a factory that may affect how quickly muscles become fatigued? I'm doing an experiment, but is this a legitimate idea? Would my hypothesis be "The intensity of muscle contractions in the body affects how quickly muscles become fatigued"?

Since the time of Darwin, biologists have looked at the history of life as a tree showing how the common ancestor of all life gave rise to all extant species. However, as we have learned more about biology, we've found that organisms do not inherit genetic information from only their direct...

I can either graduate in 2 years to teach just biology or stay 3 years and be certified to teach biology and mathematics. I just want to graduate but my parents think staying the extra year will make me more marketable. Thoughts?

Hi folks, I'm a new graduate student in biology. I'm interested in doing theory (either simulations of biomolecules, physical models of the brain/consciousness, or models of cellular dynamics). I have had very intriguing discussions with fellow students along the following lines: 1. There are...