Tuesday, April 10, 2012



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I Need Help in My Biology Quiz Can You Please Help Me Im Far Behind and Dont Understand It?

by Liposomes

3. Asexual reproduction produces offspring with A. half of a single parent's genes. B. the same genes as the parent. C. a mix of genes from two parents. D. lots of genetic variation. 5. Fossils that consist of minerals that have filled in an open mold of an organism are called A. permineralized. B. natural [...]

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What Is 'Liposome Delivery System'?

by Liposomes

I see 'liposome delivery system' in the ingredients list of a beauty product. What is it? Is it taken from animal? If so, does it produced through chemical process so the original chemical composition is changed? Tags: Small interfering RNA, chemical process, original chemical composition, beauty product, delivery system, Harry S. Truman

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Which Component of Lipopolysaccharide of Gram Negative Bacteria Can Act as an Endotoxin?

by Liposomes

A. O-specific polysaccharide B. Liposome A C. Lipid A D Phospholipid E. Core polysaccharide Tags: component, c lipid, gram negative bacteria

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Biology Help Please!?

by Liposomes

6. Fossils that are useful for dating, because they are common, easy to identify, widespread, and existed for a brief time are called A. trace fossils. B. extinct fossils. C. index fossils. D. key fossils. 7. Earth's history is organized by A. the Precambrian time scale. B. units representing one million years. C. the geologic [...]

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Some Calculation Questions Regarding Biophysics on Lipids?

by Liposomes

I need help on this 2 questions: I'd like to know the steps or formulas to solve this 2 questions: Labelling experiments have shown that phospholipids (PL) diffuse within the cell membrane, and the diffusion constant, D, for a PL in a membrane is 7x10^ (-13) m2.ms-1. Is it true that it would take more [...]

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I Need Help in My Biology Quiz Can You Please Help Me Im Far Behind and Dont Understand It...?

by Liposomes

3. Asexual reproduction produces offspring with A. half of a single parent's genes. B. the same genes as the parent. C. a mix of genes from two parents. D. lots of genetic variation. 5. Fossils that consist of minerals that have filled in an open mold of an organism are called A. permineralized. B. natural [...]

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BIOLOGY Help Please. Ten Points! I Realllyy Need Help!?

by Liposomes

13. When one organism lives inside the body of another and both benefit, the relationship is called A. photosynthesis. B. permineralization. C. mutation. D. endosymbiosis. 22. The Miller-Urey experiment demonstrated that A. organic molecules first could have come to Earth on a meteorite. B. iron-sulfide bubbles may have acted as the first cell membranes. C. [...]

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Biology Help Help Help!!! Ten Points?

by Liposomes

13. When one organism lives inside the body of another and both benefit, the relationship is called A. photosynthesis. B. permineralization. C. mutation. D. endosymbiosis. 22. The Miller-Urey experiment demonstrated that A. organic molecules first could have come to Earth on a meteorite. B. iron-sulfide bubbles may have acted as the first cell membranes. C. [...]

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Please Help -Bio Questions!?

by Liposomes

1- Describe the structures of the 3 types of lipids. 2- Define & Describe the structures of a liposome,a micelle, & a phospholipid bilayer. 3- How do ions cross the lipid bilayer of the cell membrane? 4-What are 6 ways substances are transported into a cell? 5- Why can osmosis only occur if solutions are [...]

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What Discovery Supports the Hypothesis That RNA Was the Genetic Material in the Earliest Organisms?

by Liposomes

A. Ribozymes are RNA that can self-replicate. B. DNA does not require enzymes to replicate. C. RNA stores genetic information on ribozymes. D. Chains of RNA will form lipid membranes. 12. What is the approximate age of the oldest known fossils? A. 4.6 billion years B. 3.5 billion years C. 3.8 million years D. 1.8 [...]

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