structure of a nucleotide One type of nucleic acid is the ribonucleic acid (RNA). The RNA is single-stranded used for the coding of the primary sequence of amino acids to make proteins‚ and is found mainly in the cytoplasm. In terms of structure‚ its distinguishing characteristic is that‚ from its name‚ ribonucleic acid indicates the presence of ribose‚ a cyclic monosaccharide with an aldehyde functional group. Furthermore‚ RNA can also be differentiated from other nucleic acids in terms of organic or
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Name and describe the three main parts of a cell. plasma membrane-forms a cell’s flexible outer surface‚ separating the cell’s internal environment (inside the cell) from its external environment (outside the cell) cytoplasm- consists of all the cellular contents between the plasma membrane and the nucleus. nucleus- is the largest organelle of a cell. The nucleus acts as the control center for a cell because it contains the genes‚ which control cellular structure and most cellular activities
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BLG1501/201/S2/2012 DEPARTMENT OF LIFE AND CONSUMER SCIENCES BLG1501 SEMESTER 2 TUTORIAL LETTER 201/2012 ASSIGNMENT 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)
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types of muscle tissue. 11. What are the basic steps of tissue repair? 12. What is the composition of DNA? 13. How are nucleotides paired in DNA? What is different with RNA? 14. Explain the process of DNA replication and when it occurs. 15. What specifies that amino acid sequence of a protein? 16. What is RNA? How are the 3 types different in function? 17. How are triplet codes‚ codons‚ and amino acids related? 18. What is the purpose of mitosis? 19. Briefly describe what
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__ DNA as the template molecule for messenger RNA __ The proper base pairing (including the uracil substitution) __ The chemical characteristics of nucleotides __ A comparison of RNA and DNA (other than uracil substitution) __ The triplet arrangement of codons and/or anticodons __ The control of transcription (Operon‚ etc.) __ Promoters __ The
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infections‚ and now are not. 6. Describe the change in the environment that occurred. “Strains evolved mechanisms to inhibit the aminoglycosides’ action‚ which occurs via protonated amine and/or hydroxyl interactions with the ribosomal RNA of the bacterial 30S ribosomal subunit” 7. Identify whether the environmental change was a physical or chemical change. Chemical 8. identify and describe the selective pressure acting on the organism as a result of the environmental change.
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2013 DESIGNER GENES TRAINING GUIDE by Karen L. Lancour DISCLAIMER - This presentation was prepared using draft rules. There may be some changes in the final copy of the rules. The rules which will be in your Coaches Manual and Student Manuals will be the official rules. • BE SURE TO CHECK THE 2013 EVENT RULES for EVENT PARAMETERS and TOPICS FOR EACH COMPETITION LEVEL TRAINING MATERIALS: • Training Power Point presents an overview of material in the training
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GROUP 6 ANIMAL CELL and It’s Functions ANIMAL CELL: About animal cell usually have an irregular shape. are eukaryote cells‚ or cells with a membrane bound nucleus. DNA is housed within the nucleus. Also contain other membrane bound organelles‚ or tiny cellular structures that carry out specific functions necessary for normal cellular operation. smaller than plant cells. Cell Membrane is the outermost component of a cell. it is composed of 55% proteins‚ 25% phospholipids
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the single strands to make two new DNA. Each DNA will have an old strand and a new strand. RNAwhich is a nucleic acid‚ a nucleotidediffers from DNA in three ways: 1. sugar is ribose; 2. there is a single strand of nucleotides‚ not two; 3. and uracil instead of thymine. There are three types of RNA: 1. mRNAmessengertakes the message from DNA to the ribosome; 2. rRNAribosomalthe ribosomes are made of RNA; 3. tRNAtransferbrings amino acids to the mRNA‚ about 80 nucleotides long. There are two
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nucleotides are the monomers of DNA RNA Nucleotide [pic] The left picture shows the nucleotide unit of RNA. Nucleotides differ from nucleosides in that they have phosphate groups. Nucleotides can exist in the mono-‚ di-‚ or tri-phosphorylated forms. The most common site of phosphorylation of nucleotides found in cells is the hydroxyl group attached to the 5’-carbon of the ribose. Nucleotide units line up forming the backbone of RNA / DNA. 1A. Typical DNA Molecule
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