Macromolecular Composition of the Liver Cell Formal Report Aims The aim of the experiment was to test for the presence of DNA‚ RNA‚ protein and glycogen in the cytoplasm and the nucleus of bovine liver cells. From the findings of the results the distribution of these macromolecules can be shown within the liver cell. This was carried out by undertaking qualitative experiments‚ where the observation of a colour change was noted and a quantitative experiment‚ where numerical data was recorded from
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ROLE OF BACTERIOPHAGES IN GENETICS AND MOLECULAR BIOLOGY INTRODUCTION AND DISCOVERY: A bacteriophage is any one of a number of viruses that infect bacteria. Bacteriophages are among the most common biological entities on Earth. The term is commonly used in its shortened form‚ phage.Typically; bacteriophages consist of an outer protein capsid‚ enclosing genetic material. The genetic material can be ssRNA‚ dsRNA‚ ssDNA‚ or dsDNA along with either circular or linear arrangement. Bacteriophages are
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Regulation of gene expression Transcription -the process of creating a complementary RNA copy of a sequence of DNA. Translation - messenger RNA (mRNA) is decoded by the ribosome to produce a specific amino acid chain‚ or polypeptide‚ that will later fold into an active protein. Epigenetic refers to all heritable changes in gene expression and chromatin organization that are independent of the DNA sequence itself. Epigenetic inheritance is an essential mechanism that allows the stable propagation
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1928‚ Oswald Avery’ was done during the early 1940’s‚ and Alfred Hershey’s with help from Martha Chase was done in 1952. All of these experiments contributed to the idea known as translation‚ the process of cell ribosomes converting proteins to messenger RNA‚ or mRNA. Because of how they helped with discovering translation‚ these three experiments help lead to the discovery of DNA. Before Frederick Griffith’s experiment‚ no one knew anything about DNA or what it was. Frederick Griffith studied two
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Comparison of Plant and Animal Cells Introduction Eukaryotic cells are very complex; there are many organelles‚ each serving a distinct function‚ present in eukaryotic cells. We can divide the eukaryotic group of cells in to two main groups‚ according to the presence of these membrane bound organelles‚ and the structural differences amongst the cells and their organelles. The two groups of eukaryotic cells are plant and animal cells. Nucleus The reason that plant and animal cells are not divided
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following would a physician NOT do to protect against a the spread of a viral disease? a.|administer a vaccination| b.|prescribe an antibiotic| c.|encourage good hygiene| d.|recommend bed rest to those who become ill| ____ 9. A virus’s DNA or RNA is surrounded by a(n) a.|protein coat.| b.|nuclear membrane.| c.|tail.| d.|endospore.| ____ 10. Bacteria that break down the nutrients in dead matter into simpler substances that are taken up by plant roots are called a.|plasmids.| b.|flagella
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in DNA tells the cell how much amino acid is needed for a certain protein.RNA is another type of nucleic acid. The genetics passed from DNA is passed to the RNA. Then‚ RNA sends the genetics to proteins and other organelles in the cell. RNA is essential to the synthesis of proteins‚ which helps determine how much amino acid is needed‚ and RNA is a component in the organelle ribosomes. Nucleic acids are important because without it‚ the cell wouldn’t have a purpose‚ and the human body wouldn’t
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Archaea: Most are unicellular and microscopic. Prokaryotic. Example: ancient bacteria‚ live in harsh enviorments‚ Eukarya: Contain a nucleus and organelles. Eukaryotic. Example: Plants‚ animals‚ fungi and all other forms of life -All have cells‚ dna‚ rna‚ membrane‚ ribosomes Producer to Tertiary Consumer in an energy pyramid (trophic levels) -Trophic structure / levels~ feeding relationships in an ecosystem -Primary producers~ the trophic level that supports all others; autotrophs -Primary consumers~
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HEATHER TOUPS A/P I T&R 10TH EDITION TEXT SELF QUIZ CHAPTER 3 Fill in the blanks in the following statements. 1. The three principal parts of the cell are the plasma membrane‚ cytoplasm and nucleus 2. Apoptosis refers to programmed cell death‚ whereas necrosis refers to cell death resulting from tissue injury. 3. The fluid portion of the cytoplasm is the cytosol 4. List three causes of cellular aging. 1)shortening and loss of protective polemeres
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nucleus though skeletal muscle can have more than one (multinucleate) or some cells such as red blood cells have no nucleus. The nucleus contains the genetic material and is where DNA replication and RNA transcription occur. The nucleus is bound by a membrane which contains nuclear pores. These pores allow RNA molecules and proteins to move in and out of the nucleus. However‚ this process is selective and is energy dependent. Inside the nucleus is another organelle called the nucleolus. The nucleolus is
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