Name_______________________Period___________ Chapter 6: A Tour of the Cell Concept 6.1 Biologists use microscopes and the tools of biochemistry to study cells 1. The study of cells has been limited by their small size‚ and so they were not seen and described until 1665‚ when Robert Hooke first looked at dead cells from an oak tree. His contemporary‚ Anton van Leeuwenhoek‚ crafted lenses and with the improvements in optical aids‚ a new world was opened. Magnification and resolving power limit
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Lab Questions: Lab #4 * Why are the chloroplasts traveling along the outer perimeter of the Elodea cell? The chloroplast are traveling along the outer perimeter to help move the vital nutrients thought the cells and convert them to substances used in the cell of the elodea cell. * What is the typical size difference between animal cells and bacterial cells? One of the main difference between an animal cell and a bacterial cell is a bacterial cell contains a plasmid‚ a ring of DNA‚ opposed
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Assignment 03 Photorespiration is a wasteful process. Plant Biochemistry Department of Life sciences Name- Mahnaz Reza ID- 072 398 047 Date- the 16th of March 2011‚ Wednesday Photorespiration‚ as the name suggests is the process by which the most abaundant protein on earth‚ RubisCO‚ uses up oxygen or adds oxygen to the 5 carbon sugar rubisco bisphosphate‚ instead of carbon dioxide as in the process of photosynthesis. It is the alternate pathway used by the enzyme. This enzyme being
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plants can effectively turn light energy into “usable” or kinetic energy. This process consists of two sub-processes‚ light dependent and light independent. In a plant cell there is an organelle called the chloroplast. In each plant cell there are tons of chloroplasts‚ and in these chloroplasts there are little thylakoids which are little green disks. The thick skin of the thylakoid is called the grana which is where the light dependent sub-process occurs. Basically‚ light energy is used to power
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energy produced during the light reactions. Here‚ CO2 is fixed from the air and converted into starches and sugars using NADPH and ATP to power the conversion. Light Reaction (involves the sun) The roots suck up water from the ground‚ into the chloroplasts. In there‚ the water is sun-heated and gets split into hydrogen‚ oxygen and ATP. The oxygen then gets released for us to breath and the hydrogen is put to a different part of the leaf. Dark Reaction (doesn’t involve the sun) After the hydrogen
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1. After carefully reviewing Figure 6.8‚ briefly describe the structure and function of the nucleus‚ the mitochondrion‚ the chloroplast‚ and the endoplasmic reticulum. Nucleus- nonmembranous structure involved in production of ribosomes; a nucleus has one or more nuclueoli Mitochondrion- organelle where cellular respiration occurs and most ATP is generated Chloroplast- photosynthetic organelle; converts energy of sunlight to chemical energy stored in sugar molecules Endoplasmic reticulum-
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All living things have evolved into three groups‚ or domains‚ of closely related organisms: Archaea‚ Bacteria‚ and Eukaryota. Archaea and Bacteria are small‚ simple cells surrounded by a membrane and a cell wall‚ with a circular strand of DNA containing their genes. They do not contain a nucleus or other internal structures that higher cells may have. These are called prokaryotes. Basically all the life you see today‚ including plants and animals‚ belongs to the third domain‚ Eukaryota. Eukaryotic
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Name: _______________________________________ Date: _________________ Per: _____________ Cells: The Basic Unit of Life Directions: Define the key terms and then complete the following Section Reviews after reading through Sections 5.1 through 5.3. You will complete your answers on a separate sheet of paper and then staple this worksheet on top. Vocabulary Words: Cells Cell Wall Prokaryote Chromosome Cell Theory Nucleus Nuclear Envelope Cytoplasm Cell Membrane Eukaryote
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a factory. The ribosomes are small particles found throughout the cytoplasm and produce protein by following coded instructions that come from the nucleus. The workers in the factory are told by their boss on what to make. A chloroplast is like solar panels. Chloroplasts capture the suns energy and convert that into energy for the cell. Solar panels capture the suns energy and turn it into energy for electricity or heating. The cell wall is like a building. The cell wall provides support and
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Cell Structure - Cell Organelles 1. What is cell theory? Cell theory asserts that the cell is the constituent unit of living beings. Before the discovery of the cell‚ it was not recognized that living beings were made of building blocks like cells. The cell theory is one of the basic theories of Biology. 2. Are there living beings without cells? Viruses are considered the only living beings that do not have cells. Viruses are constituted by genetic material (DNA or RNA) enwrapped by a protein
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