to sustain life * Cells (and multicellular organisms) show emergent properties – appears as complexity increases 2.1.2 discuss the evidence for the cell theory * Largely through the use of the microscope. Robert Hooke first described cells in 1665 while observing cork with a microscope he built himself. * Then Anotnir van Leeuwenhoek observed the first living cells and referred to them as ‘animalcules.’ Meaning little animals * 1838‚ Mathias Schleiden states that plants are made
Premium Cell Cellular differentiation
2.1 below shows an animal cell [pic] _________ 5(m Fig. 1.2.1 Diagram showing the general structure Of an animal cell as seen under the electron microscope 1. Calculate the magnification factor 2. Calculate the length of structure G 3. Calculate the diameter of the nucleolus 4. Calculate the diameter of the nucleus 5. Calculate the diameter of the cell at its widest point
Premium Cell wall Cell
1. INTRODUCTION A solar cell is a device that converts the energy of sunlight directly into electricity by the photovoltaic effect. Sometimes the term solar cell is reserved for devices intended specifically to capture energy from sunlight‚ while the term photovoltaic cell is used when the light source is unspecified.”Photovoltaics” the field of technology and research related to the application of solar cells in producing electricity for practical use.
Premium Solar cell
Unit 1: Unit code: QCF Level 3: Credit value: Fundamentals of Science R/502/5536 BTEC National 10 Guided learning hours: 60 Aim and purpose The aim of this unit is to enable learners to develop the practical techniques necessary to pursue a career as a laboratory technician. Learners will investigate the quantities necessary in chemical reactions‚ the structure and functions of cells‚ the calorific value of different fuels and develop skills in communicating scientific information. Unit
Premium Education Science Learning
REVISION NOTES FOR PRELIM BIOLOGY: [ A LOCAL ECOSYSTEM ] ~ Ecosystems: “any area that contains living organisms interacting with each other and their environment. In a balanced ecosystem‚ there is a flow of energy through it and recycling of some materials” Inputs and Outputs of Ecosystems include: - the energy flow through the ecosystem; energy from the sun flows one way through‚ with heat loss at each trophic level - the input and recycling of inorganic and organic material (matter) - the
Premium Cell Bacteria Organelle
Microscopy. Microscopy methods of studying bacterial infections include using light and electron microscopes. Light microscopy methods utilized include; conventional phase-contrast‚ fluorescence‚ and confocal microscopy. Electron microscopes create higher quality images; for example‚ they have been used for studying the structure of T3SS in salmonella. However‚ light microscopes are used more regularly than electron microscopes because they are more widely available. They are used to study the relations‚ and
Premium
A STUDY ON FORGING OF WROUGHT ALUMINUM ALLOYS (AA2014‚ AA2219‚ AA5083‚ AA6061‚ AA7075) AT RACHAMALLU FORGINGS Pvt. Ltd. A MINI PROJECT WORK IN THE PARTIAL FULFILLMENT OF THE DEGREE BACHELOR OF TECHNOLOGY IN METALLURGICAL AND MATERIALS ENGINEERING
Premium Tensile strength Materials science Hardness
Basic Terms • forensic (adj) 1. pertaining to‚ connected with‚ or used in court of law or public discussion and debate 2. adapted or suited to argumentation; rhetorical Forensic Chemistry • Forensic science (n.) – the application of science to criminal and civil laws. – Emphasizes the application of science to criminal and civil laws that are enforced by police agencies in a criminal justice system. • Adversarial system – owes its origins to individuals such as Bertillon‚ Galton‚ Lattes
Premium Scientific method Forensic science Fingerprint
similar/different between the three domains? 11. What staining/fluorescence tools do we use to count organisms? To sort organism? 12. Given a list of compounds‚ be able to identify the electron donors and acceptors. “Electron Donors” (Food) Reduced Carbon‚ H2S‚ H2‚ Fe(II)‚ light-plus-pigment‚ NH4 “Terminal Electron Acceptor” (To breathe) O2‚ SO4^2-‚ Fe(III)‚ organics‚ CO2‚ NO3^-‚ S^0 13. Be sure to solve various Poisson problems: P(x)=probability‚ m=mean‚ x=number of times
Premium Bacteria
1. This question is about lasers. (a) With reference to the light waves emitted by a laser‚ state what is meant by the terms (i) monochromatic. ........................................................................................................................... ........................................................................................................................... (1) (ii) coherent. ...............................................................................
Premium Light X-ray Electromagnetic radiation