File
... (ii) He transplanted a 2.5 kg willow shoot into a pot containing 91 kg of dried earth. He buried the pot in the ground and put a metal lid on top of the pot to keep airborne dust from mixing with the earth. He watered the earth when necessary with rainwater (not with well water, which might contain ...
... (ii) He transplanted a 2.5 kg willow shoot into a pot containing 91 kg of dried earth. He buried the pot in the ground and put a metal lid on top of the pot to keep airborne dust from mixing with the earth. He watered the earth when necessary with rainwater (not with well water, which might contain ...
Ancient Green and Purple Sulfur Bacteria
... Why is the state of the seas important? • Today’s oceans are oxygenated all the way to the seafloor. • Marine animal life depends on this oxygen. Plant life and much microbial life depends on current conditions too. • The oceans could not become oxygenated until after the atmosphere, which appears ...
... Why is the state of the seas important? • Today’s oceans are oxygenated all the way to the seafloor. • Marine animal life depends on this oxygen. Plant life and much microbial life depends on current conditions too. • The oceans could not become oxygenated until after the atmosphere, which appears ...
role of photosynthetic pigments in protection against oxidative damage
... All cyanobacteria contain yellow and orange colour pigments called carotenoids and xanthophylls respectively which act as accessory pigments in photosynthesis. Carotenoids are organic pigments that are naturally occurring in chromoplasts of plants and some other photosynthetic organisms like algae, ...
... All cyanobacteria contain yellow and orange colour pigments called carotenoids and xanthophylls respectively which act as accessory pigments in photosynthesis. Carotenoids are organic pigments that are naturally occurring in chromoplasts of plants and some other photosynthetic organisms like algae, ...
Regents Review: Photosynthesis and Respiration
... organisms is most likely responsible for the change indicated by the data shown at sampling site C in the graph. At site C oxygen is being used by the mitochondria of the decomposer to break down glucose molecules to form ATP (energy) by the process of cellular respiration to use for the organisms v ...
... organisms is most likely responsible for the change indicated by the data shown at sampling site C in the graph. At site C oxygen is being used by the mitochondria of the decomposer to break down glucose molecules to form ATP (energy) by the process of cellular respiration to use for the organisms v ...
Prokaryotes (bacteria) - Mrs. Ganske`s Science Classes
... There are two main groups of cells, prokaryotic and eukaryotic cells. ...
... There are two main groups of cells, prokaryotic and eukaryotic cells. ...
Chloroplasts
... environment, the electron is more suitably positioned for subsequent photochemical reactions that take time to complete. Photosynthesis produces both ATP and NADPH directly by a two-step process called non-cyclic photophosphorylation. The two photosystems enable the electron to be passed all the way ...
... environment, the electron is more suitably positioned for subsequent photochemical reactions that take time to complete. Photosynthesis produces both ATP and NADPH directly by a two-step process called non-cyclic photophosphorylation. The two photosystems enable the electron to be passed all the way ...
Reading GuideChapter1_7e
... we were able to see the inside architecture of cells and realize that they were different. Some had a membrane bound nucleus, and membrane bound organelles. Others lacked these same structures. With this new discovery, new categories had to be made to place these new cells which lacked these structu ...
... we were able to see the inside architecture of cells and realize that they were different. Some had a membrane bound nucleus, and membrane bound organelles. Others lacked these same structures. With this new discovery, new categories had to be made to place these new cells which lacked these structu ...
Photosynthesis
... Photosynthesis is the process by which green plants manufacture food. A. Sunlight provides the energy B. Carbon dioxide in the air ...
... Photosynthesis is the process by which green plants manufacture food. A. Sunlight provides the energy B. Carbon dioxide in the air ...
Environmental Chemistry I Lab. 5. The impact of acid precipitation
... easily dissolves in oils and organic solvents. A chlorophyll molecule has a hydrophobic "tail" that embeds the molecule into the thylakoid membrane. The "head" of a chlorophyll molecule is a ring called a porphyrin. The porphyrin ring of chlorophyll, which has a magnesium atom at its center, is the ...
... easily dissolves in oils and organic solvents. A chlorophyll molecule has a hydrophobic "tail" that embeds the molecule into the thylakoid membrane. The "head" of a chlorophyll molecule is a ring called a porphyrin. The porphyrin ring of chlorophyll, which has a magnesium atom at its center, is the ...
BIO 1109 – Principles of Biology Midterm examination 2
... 4.1 Solar energy is stored in ATP and this compound during photosynthesis ___NADPH_______ 4.2 This metabolic process produces both NADH and FADH2. __Krebs/citric acid___________ 4.3 The traits Mendel studies in garden peas showed this kind of dominace. ___Complete______ 4.4 These vents in the deepes ...
... 4.1 Solar energy is stored in ATP and this compound during photosynthesis ___NADPH_______ 4.2 This metabolic process produces both NADH and FADH2. __Krebs/citric acid___________ 4.3 The traits Mendel studies in garden peas showed this kind of dominace. ___Complete______ 4.4 These vents in the deepes ...
Plant nutrition and soils – Chapter 29
... Nitrogen fixation- reduction of N2 to ammonia by free living or symbiotic prokaryotes Nitrate (NO3-) and ammonium (NH4+) converted to organic nitrogen forms (amino acids) by plant Decaying biomass converted to ammonia by ammonifying bacteria-some reenters atmosphere, some taken back up by plan ...
... Nitrogen fixation- reduction of N2 to ammonia by free living or symbiotic prokaryotes Nitrate (NO3-) and ammonium (NH4+) converted to organic nitrogen forms (amino acids) by plant Decaying biomass converted to ammonia by ammonifying bacteria-some reenters atmosphere, some taken back up by plan ...
Ch. 8 - Photosynthesis
... light- absorbing molecules called pigments. ◦ Chlorophyll is the principal pigment. ◦ This pigment is located in the chloroplasts. ...
... light- absorbing molecules called pigments. ◦ Chlorophyll is the principal pigment. ◦ This pigment is located in the chloroplasts. ...
Photosynthesis Lecture
... bacteria living in the depths of the ocean use inorganic materials and heat from ocean vents to produce food. ...
... bacteria living in the depths of the ocean use inorganic materials and heat from ocean vents to produce food. ...
Photosynthesis in Action
... Photosynthesis is the means by which plants can convert carbon dioxide and water to oxygen and, most importantly, glucose. This happens when sunlight hits a pigment called chlorophyll, which is stored in the chloroplasts in plant cells. Plants then use the glucose in a number of different ways: - Re ...
... Photosynthesis is the means by which plants can convert carbon dioxide and water to oxygen and, most importantly, glucose. This happens when sunlight hits a pigment called chlorophyll, which is stored in the chloroplasts in plant cells. Plants then use the glucose in a number of different ways: - Re ...
Photobiology of bacteria Hellingwerf, KJ
... that use either an organic electron donor or an inorganic (sulphide) and organisms that do or do not have specific antennae: the chlorosomes. The four resulting families were: the Rhodospirillaceae, the filamentous green bacteria, the purple sulphur bacteria and the green-sulphur bacteria. On the ba ...
... that use either an organic electron donor or an inorganic (sulphide) and organisms that do or do not have specific antennae: the chlorosomes. The four resulting families were: the Rhodospirillaceae, the filamentous green bacteria, the purple sulphur bacteria and the green-sulphur bacteria. On the ba ...
A1989AG82900001
... when nitrate was provided as nitrogen sourcein addition to the free nitrogen of the air and was completely inhibited by ammonium salts. Previous workem had grown An.thaena spp. in the presence of nitrate or ammonium salts but had missed this effect because they left microscopical examination until t ...
... when nitrate was provided as nitrogen sourcein addition to the free nitrogen of the air and was completely inhibited by ammonium salts. Previous workem had grown An.thaena spp. in the presence of nitrate or ammonium salts but had missed this effect because they left microscopical examination until t ...
Reading Guide for Week 4
... and their environmental conditions are right, let’s go inside the bacteria to find out how they grow and get a sense of the immense diversity of prokaryotic metabolism. In this week’s reading you will learn about: 1. Transport of molecules into and out of the cell. 2. How chemoorganoheterotrophic ba ...
... and their environmental conditions are right, let’s go inside the bacteria to find out how they grow and get a sense of the immense diversity of prokaryotic metabolism. In this week’s reading you will learn about: 1. Transport of molecules into and out of the cell. 2. How chemoorganoheterotrophic ba ...
PPT_11Mar15
... Most limiting nutrient in many terrestrial ecosystems Rapid turnover rate and can be lost rapidly to the atmosphere Nitrogen in the form of Dinitrogen (N2) makes up 80% of the air we breathe but is essentially inert due to the triple bond ...
... Most limiting nutrient in many terrestrial ecosystems Rapid turnover rate and can be lost rapidly to the atmosphere Nitrogen in the form of Dinitrogen (N2) makes up 80% of the air we breathe but is essentially inert due to the triple bond ...
Bacteria
... across a bridge formed between the cells. New material replaces old material in the cell. While this increases the genetic variability in the organisms, it is not true sexual reproduction. • Endospores - during adverse conditions, the DNA is encased in a protective envelope. This endospore can lie d ...
... across a bridge formed between the cells. New material replaces old material in the cell. While this increases the genetic variability in the organisms, it is not true sexual reproduction. • Endospores - during adverse conditions, the DNA is encased in a protective envelope. This endospore can lie d ...
Photosynthesis - Ms Kim`s Biology Class
... Use energy of sun to make organic molecules from H2O and CO2 Some worms and bacteria are chemoautotrophs Use energy from chemicals to make organic molecules ...
... Use energy of sun to make organic molecules from H2O and CO2 Some worms and bacteria are chemoautotrophs Use energy from chemicals to make organic molecules ...
Photosynthesis and Cellular Respiration
... Plants do step 2 with mitochondria Because plants make their own food and then eat it, they are called ...
... Plants do step 2 with mitochondria Because plants make their own food and then eat it, they are called ...
Sample Exam 2 Questions
... 17. In the light-independent reactions of photosynthesis A. carbon dioxide is incorporated into an organic molecule. B. oxygen is produced. C. ATP is made. D. A and C are correct. E. A, B, and C are correct. 18. Carbon dioxide is reduced in A. cyclic photophosphorylation. B. noncyclic photophosphory ...
... 17. In the light-independent reactions of photosynthesis A. carbon dioxide is incorporated into an organic molecule. B. oxygen is produced. C. ATP is made. D. A and C are correct. E. A, B, and C are correct. 18. Carbon dioxide is reduced in A. cyclic photophosphorylation. B. noncyclic photophosphory ...
Biology Answer Key
... Name the photosynthetic mechanism adapted to help plants growing in dry conditions. Explain the mechanism giving reasons why this adaptation is beneficial to such plants? Hatch and Slack pathway / C4 cycle – 3+2 m explanation with flow chart OR a) What is photorespiration? How does this process resu ...
... Name the photosynthetic mechanism adapted to help plants growing in dry conditions. Explain the mechanism giving reasons why this adaptation is beneficial to such plants? Hatch and Slack pathway / C4 cycle – 3+2 m explanation with flow chart OR a) What is photorespiration? How does this process resu ...
Cyanobacteria
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Cyanobacteria /saɪˌænoʊbækˈtɪəriə/, also known as Cyanophyta, is a phylum of bacteria that obtain their energy through photosynthesis. The name ""cyanobacteria"" comes from the color of the bacteria (Greek: κυανός (kyanós) = blue). They are often called blue-green algae (but some consider that name a misnomer, as cyanobacteria are prokaryotic and algae should be eukaryotic, although other definitions of algae encompass prokaryotic organisms).By producing gaseous oxygen as a byproduct of photosynthesis, cyanobacteria are thought to have converted the early reducing atmosphere into an oxidizing one, causing the ""rusting of the Earth"" and causing the Great Oxygenation Event, dramatically changing the composition of life forms on Earth by stimulating biodiversity and leading to the near-extinction of anaerobic organisms (that is, oxygen-intolerant). Symbiogenesis argues that the chloroplasts found in plants and eukaryotic algae evolved from cyanobacterial ancestors via endosymbiosis. Cyanobacteria are arguably the most successful group of microorganisms on earth. They are the most genetically diverse; they occupy a broad range of habitats across all latitudes, widespread in freshwater, marine, and terrestrial ecosystems, and they are found in the most extreme niches such as hot springs, salt works, and hypersaline bays. Photoautotrophic, oxygen-producing cyanobacteria created the conditions in the planet's early atmosphere that directed the evolution of aerobic metabolism and eukaryotic photosynthesis. Cyanobacteria fulfill vital ecological functions in the world's oceans, being important contributors to global carbon and nitrogen budgets.– Stewart and Falconer