Cyanobacteria’s big advantage over other early life forms was their ability to perform photosynthesis. They contain a blue photo reactive pigment that can absorb the energy from the sunlight and use it to produce nutrients for the cell. During this process‚ water molecules are broken down into oxygen and hydrogen atoms which are then released in the air. In the very early days of life‚ Earth was populated only by anaerobic bacteria that didn’t need oxygen to survive. When cyanobacteria first made
Premium Oxygen Cellular respiration Photosynthesis
CIGARETTE SMOKE TO PHOTOSYNTHESIS Increased Carbon Dioxide Smoke of all kinds‚ including cigarette smoke‚ increases the amount of carbon dioxide where it is present (since smoke is itself produced via combustion). Plants use carbon dioxide to make sugars (during photosynthesis). Its increased abundance‚ therefore‚ makes it easier for the plant to obtain. Thus‚ smoking near a plant actually makes it easier for that plant to obtain much-needed carbon dioxide. Hampering Photosynthesis At the same
Premium Photosynthesis Oxygen Carbon dioxide
Urban ecosystem and Ecopolis Lai Wei March 29‚ 2012 Introduction When people talk about the city‚ the first thing they thought is the building and the traffic. It’s hard to connect city to the ecological and the environment. But as the humanity is rapidly urbanizing‚ by 2010‚ more than 50% of the world population is expected to live in the city. (The World Bank‚ 2010) Cities can be tremendously efficient. It can easier to provide water and sanitation for a large number of people living
Premium City Sustainability Ecology
Understanding the Principles and Practices of Assessment Q1 - Explain the Function of assessment in learning and development The assessment cycle continues until all aspects of the qualification have been achieved by the learner:- Initial assessment – Prior knowledge of the subject to determine teaching style. Assessment planning – agree what types and methods of assessments are to take place Assessment Activity – what methods‚ e.g. observational/ assignments/ questioning Assessment decisions
Premium Assessment
scientific knowledge has helped humanity comprehend the complex relationships in ecosystems and the devastating effects of human interference. As a result we have become increasingly aware of the need to protect and manage the ecosystems that we do have remaining for their utility‚ genetic‚ intrinsic and heritage values and also for the need to allow natural change and thus evolution to take place. Natural ecosystems have provided much that has been of benefit to humanity and with careful protection
Premium Biodiversity Ecosystem Natural environment
Photosynthesis Lab Report Purpose: To research the effect of different wavelengths (colors) of light on plant growth during photosynthesis. Background Information: Photosynthesis is the process by which sunlight is captured by chloroplasts within plant cells and turned into energy. This energy is used to help the plant grow roots‚ leaves‚ flowers and fruit. Energy is required by living things
Premium Light Color
Photosynthesis The leaves are the part of a plant where most photosynthesis takes place. If you cut a leaf in half and look at the cut end‚ it would look like this: Key: 1. Waxy cuticle: this gives the leaf a waterproof layer‚ which lets in light. 2. Upper epidermis: provides an upper surface. 3. Palisade cells: contain chloroplasts. 4. Spongy mesophyll: collection of damp‚ loosely packed cells. 5. Lower epidermis: layer of cells on the lower surface. 6. Air
Premium
Chapter 8: Cellular Reproduction – Cells from Cells 1. What are the three important roles of cell division? 2. Compare and contrast sexual and asexual reproduction. 3. Distinguish between the terms: DNA‚ gene‚ chromosome‚ replicated chromosome‚ sister chromatid and centromere. 4. What are the two phases of the cell cycle? What are the three stages of interphase? 5. Mitosis is the division of the ______‚ while cytokinesis is the division of the ______. 6. Describe the appearance
Premium Mitosis Chromosome Cell nucleus
planet earth needs to survive.Howerver on otherside research shows that scientists have significantly overestimated the damage that logging in tropical forests has done to biodiversity‚ a finding that could change the way conservationists think about how best to preserve species disturbed by humans.This indicates that we humans are the ones who doesn’t have time to think what we are destroying and creating facilities for ourselves‚not even thinking what we are doing.For example; There is
Premium Human Tropics Biodiversity
An Increase in Light Intensity Increases the Rate of Respiration M. Chauntise‚ S. Shaika‚ R. Shantal INTRODUCTION The sun plays a vital role in sustaining an entire living world whether indirectly or directy using a transformation process called photosynthesis. This process assists in nourishing plants and keeping them alive. For example‚ trees grow very tall in the rainforest where there is an abundance of water in order to reach as much light as they can. For this reason‚ in order to survive the
Premium Photosynthesis Oxygen Carbon dioxide