New cells arise by division of existing cells Cell division occurs in the nucleus of eukaryotic cells by mitosis and meiosis Replacement of the entire lining of your small intestine Liver cells only divide for repairing Nerve cells do not divide Chromosomes Long and thin for replication and decoding Become short and fat prior mitosis → easier to separate due to compact form Meiosis (reduction division) During the production of sex cells (gametes) in animals In spore formation which precedes
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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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7.1.1 Describe the structure of DNA‚ including the antiparallel strands‚ 3’-5’ linkages and hydrogen bonding between purines and pyrimidines. DNA is made up of two strands. At one end of each strand there is a phosphate group attached to the carbon atom number 5 of the deoxyribose (this indicates the 5’ terminal) and at the other end of each strand is a hydroxyl group attached to the carbon atom number 3 of the deoxyribose (this indicates the 3’ terminal). The strands run in opposite directions
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feedback mechanisms? D) Negative feedback mechanisms work to prevent sudden severe changes within the body. Which of the following is a concept of the cell theory? D) A cell is the basic structural and functional unit of living organisms. The RNA responsible for bringing the amino acids to the "factory" site for protein formation is the: C) tRNA. If a tRNA had an AGC anticodon‚ it could attach to a(n) ________ mRNA codon. A) UCG The term used to describe the type of solution in
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Chapter 1 Section 1 Anatomy-Study of internal and external structures of the body and the physical relationships among body parts Gross Anatomy -involves the examination of relatively large structures and features usually visible with the unaided eye Microscopic Anatomy-deals with structures that cannot be seen without magnification Physiology-the study of function and considers the functions of the human body Anatomy and physiology are closely interrelated Theroretically Practically Anatomical
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very similar to DNA‚ called mRNA or messenger RNA‚ is a copy of a gene‚ and serves this function the "bridge" between DNA and protein: The Central Dogma:DNA encodes the information to make RNA and RNA molecules function together to make protein | II. What is RNA and how is it different from DNA? Two big differences between DNA and RNA: * 1. The sugar in DNA is deoxyribose; in RNA it is ribose * 2. The nitrogenous base uracil (U) is used in RNA
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4. SEX-LINKED INHERITANCE autosomes—22 pair in people heterosomes—1 pair in people (XY sex chromosomes) XX=female XY=male Red-green color blindness in people: PREVIOUSLY NOTED FROM TUESDAY SEPTEMBER 3‚ 2013 5. No dominance example homozygous black= black chicken homozygous white= white chicken heterozygous= gray 6. Multiple factors Several sets of alleles on entirely different chromosomes affect the expression of a single characteristic. Skin color in people Stature on people
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statistical of 66.25 years old. Health issues become more concern ‚ yet diseases are everywhere which we cant escape from anyone of it ‚ hence advance medical treatment are need to treat most infectious disease as well as some genetic disorder and cancers. RNA-based Therapeutics is a scientific ideas that bring a hope to human that suffer in diseases and give them a chance to be better‚ live longer with their families. . History of human disease According to Diamond and Panosian‚ 2006 ‚ an earlier formation
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C12 to 13C Preferential incorporation of 12 CO2 than 13 CO2 whether the bond is easier to break or active site more active than it needs to be- incorporates 12C more 16s rRNA: 1977 Carl Woese Carl Woese used phylogenetic taxonomy of 16s ribosomal RNA to begin to define Archaea as a separate domain of life from eukaryotes and bacteria. It is important to note that though Woese defined the archaea in 1977 they would not be accepted as a separate domain of life from bacteria until the mid 80s
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Biology 101 FINAL EXAMINATION Spring‚ 2013 Name: Gabriel Euzebio Date: May 10‚ 2013 GENERAL INSTRUCTIONS: This final exam is worth 100 points. There are three sections. The Multiple Choice section has 50 questions worth 1 point each‚ for a total of 50 points. The Fill-In The Blanks section has 10 questions worth 1 point each‚ for a total of 10 points. For the Short Answer section‚ you must choose to answer 8 of the 12 questions‚ and each question is worth 5 points‚ for a total
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