Question:1. What is needed in photosynthesis to convert carbon dioxide into organic molecules? 2. How is the proton gradient generated in chloroplasts during photosynthesis? 3. Why is the action spectrum for photosynthesis similar to the absorption spectra of photosynthetic pigments? 4. What (specifically) produces ATP in mitochondria? 5. To which parts of the deoxyribose molecule do phosphates bind in DNA?

Answers:1. sunlight (energy), chlorophyll (to absorb the light), and a lot of enzymes found inside the chloroplasts of plants. http://en.wikipedia.org/wiki/Photosynthesis 2. By the cytochrome bf complex in the thylakoid membrane of the chloroplast http://en.wikipedia.org/wiki/Chemiosmosis#In_plants 3. Because the phytosynthetic pigments carry out the photosynthesis (sounds like a trick question). 4. The enzyme ATP synthase http://en.wikipedia.org/wiki/ATP_synthase 5. The phosphate groups are bound to the 2-deoxyribose (sugar), on the 3rd and the 5th carbon atoms. The backbone is sugar-phosphate-sugar-phospate-sugar, etc. http://en.wikipedia.org/wiki/Dna I hope that was helpful! Next time, it might be better to split up the question into 5 questions. That way more people will be motivated to answer (and earn 5 times the points).

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Question:OK. So here are the questions: 1. What are carbohydrates broken down into? (molecules etc.) 2. what is the test for lipids? 3. what are enzymes? 4. does an enzyme denature if the temperature is too cold? 5. what are the 7 components of a balanced diet? 6. what are the functions of lipids, carbohydrates, and proteins? 7. why are vitamins and minerals needed in a balanced diet? 8. who requires more energy - an office worker or a builder? why? 9. Write definitons for the following key words: ingestion, egestion, assimilation, absorption and digestion. 10. which enzyme acts on carbohydrates? 11. What do tricuspid and bicuspid valves in the heart do? THANK YOU

Answers:1.carbohydrates broken down into glucose+(maltose/glucose or fructose depends on it dissaccharides types) 2.Lipids can be tested using filter paper. 3.Enzymes are a complex protein molecule that works as a metabolic reactor which can broken down complex molecule to simple molecule and vice versa. 4.Enzymes does not denature at cold temperature.Cold temperature only slows down the process of enzymes. 5.Carbohydrates,protein,water,salt,Iodine,vitamins and fat.(this answer im not so sure) 6.Lipids:act as an energy reserve. Carbohydrates:same as lipids function as mention above. Protein:Important component of cells,to produce antibodies and enzymes etc. 7.(i honestly dunno this answer) 8.Builder.Because a builder need to pick a heavy loads which require a lot of energy and builder have to walk here and there under the sun.\ 9.(too much too write.sry) 10.Salivary amylase 11.it prevents the blood in the heart from backflowing.

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Question:i'm writing an essay and one of the paragraphs is about why gold is important to biology... and i can't seem to find any reasons :\ help would be much appreciatedd

Answers:The only thing I can think of is for use in electron microscopy. When an electron microscope is used, the sample to be looked at is covered in metal ions, typically gold. The metal coating is needed to make the sample electrically conductive. An electron microscope allows for really cool looking pictures of super-small things, like bacterial cells or hairs on the leg of a flea. Please answer my question: http://answers.yahoo.com/question/index;_ylt=AqvsxtoiIq5i4FPHuytD_ILsy6IX;_ylv=3?qid=20091108112043AA2Dtf2

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Question:I understand that most pharmacy schools will accept people who haven't done biology at A-level but i wanted to know how useful an biology a-level is in getting through pharmacy school and if i would struggle on the course only having a gcse in biology. Sorry, that was really long-winded haha, but hopefully what i'm trying to get at makes sense! Atm i have decided to take Chem Maths and Geography a-levels but unsure whether to take physics or biology. Please Help!

Answers:Right Chemistry and Maths are necessary, but Biology isn't. Biology is more favoured then Physics, for Pharmacy that is (if you where looking for Dentistry then it would be the other way around). Universitys usually tend to go for people that choose Chemistry Maths Biology and another subject of the students choice, such as Art (this gives the image that you are multi talented in many different variety of subjects), but as you said you've chosen Geography, thats great! Oh and you should maybe look into University Prospectisus, because each University varies from what they actually want. Hope I helped.

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