Formative Assignment Including PSAfor class IX PHYSICS 1. Motion is relative or absolute? Give reason. 2. Name the physical quantity that essentially changes as a body moves. 3. Is displacement or distance independent of path? How? 4. Give example of a motion in which distance is covered but there is no displacement. 5. Give one example of motion where‚ distance and displacement are same. 6. When moving car returns to the same point what will be the ratio of
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Enzymes All enzymes are globular proteins and round in shape They have the suffix "-ase" Intracellular enzymes are found inside the cell Extracellular enzymes act outside the cell (e.g. digestive enzymes) Enzymes are catalysts → speed up chemical reactions Reduce activation energy required to start a reaction between molecules Substrates (reactants) are converted into products Reaction may not take place in absence of enzymes (each enzyme has a specific catalytic action) Enzymes catalyse
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Chapter 15: • Matter is anything that has mass and takes up space. – Ex: Your textbook‚ you‚ your pen/pencil‚ air‚ etc. • Classification systems are used all the time to organize objects. – Ex: The Periodic Table of Elements‚ organizing your locker‚ your clothes‚ etc. • In order to make the study of matter easier to understand‚ scientists have developed ways to classify matter. • The properties of materials can be used to classify them into general categories. – Ex: Pure substances‚ elements
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help molecules across membranes? ENDOCYTOSIS (PHAGOCYTOSIS & PINOCYTOSIS & EXOCYTOSIS Photosynthesis Chemical Reaction for photosynthesis: Water + Carbon dioxide à Glucose + Oxygen 6H2O + 6CO2 C6H12O6 + 6O2 Process by which plants and some other organisms use light energy to convert water and carbon dioxide into oxygen and high-energy carbohydrates such as sugars and starches Chloroplast- site of photosynthesis Cellular Respiration-
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Background Theory Photosynthesis: Plants require water from the soil‚ sunlight and carbon dioxide found in the atmosphere for growth and development. In the process of photosynthesis‚ carbon dioxide and water – in the presence of chlorophyll and light energy – are converted into sugar and oxygen‚ which is given off as a by-product. Generally‚ as sunlight increases in intensity‚ the rate of photosynthesis also increases [1]. This means greater food production within the plant. Many garden vegetables
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Delhi Public School Meerut HOLIDAYS HOMEWORK 2013-14 Class : X Dear Students‚ Summer Vacations are back & so is all the fun and frolic. This is definitely a welcome break… Break from fixed schedules‚ rules and regulations of school. But remember freedom brings more responsibility. Keeping this in mind‚ We have planned most of the activities for you to keep you engaged positively and your energies well directed. Though‚ we‚ your teachers‚ will not be physically present to keep a supervisory
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02 MEMORANDUM 2 BLG1501/201/S2/2012 Dr Monde Nyila 011 471 2294 e-mail: nyilama@unisa.ac.za Question 9.1: What is the summarised equation for cellular respiration? (6) Answer: Organic compounds + Oxygen → Carbon dioxide + Water + Energy OR C6H12O6 + 6O6 → 6C02+ 6H20 + Energy (ATP + heat) Question 9.6: Explain why ATP is required for the preparatory steps of glycolysis.(2) Answer: ATP is used to phosphorylate the fuel molecules. Question 9.12: Compare in tabulated form the processes of fermentation
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glucose. The glucose is used in respiration‚ or converted into starch and stored. Oxygen is produced as a by-product. The equation for photosynthesis: Carbon Dioxide + Water (+ Light Energy) → Glucose + Oxygen Symbol equation: 6CO2 + 6H2O ------> C6H12O6 + 6O2 (http://www.bbc.co.uk/schools/gcsebitesize/science/add_aqa_pre_2011/plants/plants1.shtml) The effect of the concentration of carbon dioxide on the rate of photosynthesis: Sometimes photosynthesis is limited by the concentration of carbon
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Term | Definition | Systematic Biology / Systematics | * Study of the biodiversity * Quatitative science that uses the characteristics of living and fossil organisms(traits) to infer relationships between organisms over time | Taxonomy | * Branch of systematic biology * Process of identifying‚ naming and organising biodiversity into related categories | Taxon | General name for a group containing an organisms or groups of organisms that exhibit a set of shared traits | Classification
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containing glucose will diffuse faster through a 200 MWCO membrane if it is heated. True 3. The molecular weight of carbon C is 12; the molecular weight of hydrogen (H) is 1; the molecular weight of oxygen (O) is 16. The chemical formula of glucose is: C6H12O6 . Using some simple multiplication and addition‚ determine the molecular weight of one molecule of glucose. 4. Describe two variables that affect the rate of diffusion. 5. Why do you think that the urea was not able to diffuse through
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