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Q: biologically available nitrogen?
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Q: why is all the carbon on earth not used if every living thing requires it
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What carbon compound is the least available for the majority of life forms and why is this the case?
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- Which is the autotrophic group responsible for the production of most part of the molecular oxygen of earth?Where Do the O Atoms in Organisms Come From? Name three principal inorganic sources of oxygen atoms that are commonly available in the inanimate environment and readily accessible to the biosphere.Why is carbon essential to all known life in earth ?
- For questions 30 through 36, select the location where the following events occur. Answers may be used once, more than once, or not at all. Some questions may have one answer, some questions may have more than one answer. a) mitochondrial inner membrane b) mitochondrial intermembrane space c) mitochondrial matrix d) thylakoid membrane e) thylakoid space 30. electron chain components embedded here 31. H+ pumped into here 32. found in plants 33. found in animals 34. ADP+ Pi→ ATP occurs here 35. ATP synthase embedded here 36. Light-capturing pigments embedded here asap please.A) Briefly explain what oxygen is? B) Is the surplus of oxygen in our atmosphere a requirement for life, or a product of life? provide 3 points of evidence with explanation of each pointWhich of the following is a major function of phosphorus in the body? Question 41 options: a) It is involved in the blood clotting process b) It contributes to the structure of bones and teeth c) It helps to regulate blood pressure levels d) It is a constituent of NADH
- What is the most abundant form under which nitrogen is found in nature?Why is advantageous for farmers to alternate yearly planting of leguminous and non-leguminous crops in their fields?on k. 7.2 Natural carbon recycling ADVANCED STANDARD Science understanding FOUNDATION bushfire (n) a forest fire that is out of contral Carbon is the basis of all life on Earth. There is a fixed amount of carbon on Earth and this carbon is continuously recycled and reuscu. It takes carbon about 100 million vears to complete one cycle through the lithosphere (rock, soil, land), bydrosphere (oceans, lakes, rivers), the atmosphere and the biosphere. controlled burn In) a supervised fire Carbon stores HINT The Earth's four major carbon stores (or sinks) are-the atmosphere, occans, terrestrial ecosystems (on land) and Earth's crust. 1 Gigatonne = 10 tonne = 10" kg Table 7.2.1 Earth's principal carbon stores in gigatonnes (Gt) Stores of carbon Gigatonnes (Gt) Gigatonnes (Gt) Stores of carbon marine sediments and 3000 sedimentary rocks 66000 000-100 000 000 coal deep oceans soils and organic matter 1600 40 000 surface oceans 1000 oil and gas 300 vegetation 540-610 the atmosphere 750 Plants…
- How does the ocean remove carbon dioxide from Earth’s atmosphere? What role do tiny marine organisms, such as foraminifera, play in the removal of carbon dioxide?What are organisms called that can use carbon dioxide to make their own carbon compounds?1.2 Give the correct biological term for each of the following descriptions. Write only the term next to the question number (1.2.1-1.2.6) in the ANSWER BOOK. 1.2.1 The reagent used to test for the presence of starch 12.2 The green, light-trapping pigment in photosynthesis found in plant leaves. 1.2.3 The group of animals that feed only on plants material. Flat and uneven teeth used for grinding and crushing food. animals 1.2.4 1.2.5 A hollow muscular tube that connects the pharynx to the stomach 1.2.6 The removal of solid wastes from the body Indicate whether each of the statements in COLUMN I applies to A only, B onl both A and B or none of the items in COLUMN II. Write A only, B only, both and B, or none next to the question number (1.3.1-1.3.5) in the ANSWER BOOK. 1.3 COLUMN I COLUMN II A lymph vessel in the villus of Lacteal 1.3.1 A Lymphatic node Lamella Granum the intestine 1.3.2 Storage of chlorophyll Produce oxygen Produce carbon dioxide Guard cells Epidermal cells High…