water samples that were collected from the Pacific coast of Japan (unpublished results). Among the isolates‚ a novel‚ highly selective astaxanthin-producing marine bacterium‚ labeled strain (N-5)‚ was isolated based on its ability to produce orange pigment on NA plate after 2 days of cultivation at 30 °C. Strain N-5 formed colonies that were medium in size (1.0−2.0 mm in diameter)‚ circular‚ shiny‚ and orange (Figure 1B). Unless otherwise specified‚ all characteristics described hereafter are those
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waste product Referring to the above equation‚ it can be seen that light energy plays the role as the source of energy stimulating the process of photosynthesis. The main pigment that absorbs light energy is chlorophyll which is the green pigment found inside chloroplasts. A green leaf cut out into discs of the same size are used in this experiment. This experiment is carried out to discover how different intensity would affect the rate of photosynthesis. Hypothesis
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Chloroplasts are organelles composed of a phospholipid inner and outer membrane. Between these 2 membranes is an intramembranous space. Inside the inner membrane is a fluid called the stroma which contains thylakoids‚ where photosynthesis takes place. The thylakoids are shaped like pancakes and are bounded by a membrane. Photosynthesis takes place on the thylakoid membrane. The thylakoid membrane has proteins embedded in it. The pigment chlorophyll is embedded in
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shape‚‚ plant cells have chlorophyll the light absorbing pigment required for photosynthesis. First‚ animal cells don’t have central vacuoles or cell walls. Cell Walls are composed of cellulose‚ hemicellulose and other material Animal cells do not have cell walls they only have a cell membrane‚ this makes their shape round/fluid they have lysosones which plants do not‚ versus the plant cell which is more angular/rigid. Plant cells have chloroplasts to convert light into energy‚ animals do not. Animal
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DEFINITIONS * Biology is a natural science concerned with the study of life and living organisms‚ including their structure‚ function‚ growth‚ evolution‚ distribution‚ and taxonomy. * The cell is the basic structural and functional unit of all known living organisms. It is the smallest unit of life that is classified as a living thing (except virus‚ which consists only from DNA/RNA covered by protein and lipids)‚ and is often called the building block of life. Organisms can be classified
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Chapter 1/2 Bio Study Guide Section 1.1-Scientific Method Science- An organized way of gathering and analyzing evidence about the natural world Scientific Method 1. Collecting observations 2. Asking questions 3. Forming a hypothesis 4. Experiment 5. Analyze results and draw conclusions 6. Revise hypothesis Control Group- a group in the experiment that receives no experimental treatment Independent Variable- Variable that you change in the experiment X-axis Dependent
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The plasma membrane of a cell is extremely important to the transportation of substances into and out of the cell. The outer membrane of a cell is made up of lipids and proteins. Most of the lipids in plasma membranes are phospholipids. The phospholipids have a hydrophilic head and two hydrophobic tails. When engulfed in water‚ they arrange themselves such that all the hydrophobic tails clump together‚ surrounded by the hydrophilic heads‚ protecting the tails from the exposure to the water. In cells
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154–170 Shtern E‚ Timmonis K (1974) Electronic absorption spectroscopy in organic chemistry. (in Russian). In: Pentin YuA (ed) Mir‚ Moscow‚ p 296 Siek TJ‚ Rieders F (1984) Determination of carboxyhemoglobin in the presence of other blood hemoglobin pigments by visible spectrophotometry. J Forensic Sci 1:39–54 Singleton F‚ Collier GL (1956) Infra-red analysis by the derivative method 6:495–510 Skujins S (1986a) UV Instruments at work Skujins S (1986b) UV Instruments at work. Varian AG.. No UV-31. Pt
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Prokaryotic cells are single celled organisms that were formed at the formation of the earth‚ so are the most basic life forms. The prokaryotes are organised in the ‘three domain system’ and include bacteria and blue-green algae. Prokaryotes live in many environments including extreme habitats such as hydrothermal vents‚ hot springs‚ swamps‚ wetlands‚ and the guts of animals. This is a diagram of a prokaryote cell and it shows that they are not very complex cells. They do not contain any membrane
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while the matrix is responsible for the catalyzing the oxidation of small organic molecules. Photosynthesis occurs in Eukaryotic plant cells‚ which have the organelle of plastid chloroplasts. The chloroplast is the site of photosynthesis. The thylakoids are formed from the grana and this is where the photosynthetic pigments are round and the location of the light dependent reactions. The stroma is a protein containing cell part that is in the region around the Grana‚ here is where light independent
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