Mutations During transcription‚ the information in the DNA of a specific gene is copied into mRNA (messenger RNA)‚ which creates a nucleotide sequence. After transcription‚ if the DNA base sequence is 3’-TACCCTTTAGTAGCCACT-5’‚ then the base sequence of mRNA would be 5 ’-AUGGGAAAUCAUCGGUGA-3’. During translation‚ Ribosomal RNA combines with proteins to form a ribosome. tRNA (transfer RNA) brings individual amino acids to the ribosome‚ mRNA binds the ribosome. 3 nucleotides at a time equal 1 codon
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A macromolecule can best be described as an immense molecule‚ made up of thousands of covalently bonded carbon atoms. There are four classifications of macromolecules: carbohydrates‚ lipids‚ proteins‚ and nucleic acids. Each classification performs specific functions that allow cells to grow and survive. Macromolecules can be either split or bonded through dehydration synthesis or hydrolysis. Dehydration synthesis occurs when water is released‚ electrons become shared‚ covalently bonding two
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phage injects its DNA into the bacterium‚ the phage DNA directs the host cell to make more phage DNA‚ The cell lyses and releases the new phages DNA structure (10.2) DNA structure is double helix DNA vs. RNA (10.2) DNA is deoxyribose while RNA is sugar ribose and RNA has the base Uracil instead of Thymine 4 nitrogenous bases & base pairing (10.2) A pairs with T‚ forming two hydrogen bonds‚ and G pairs with C‚ forming three hydrogen bonds. Watson‚ Crick‚ Franklin‚ Wilkins
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Allison hernandez Yañez Grupo 2 A0141117 3 September 2014 A) Why is Carbon important? What makes Carbon so unique? 1.-Because this element have four valence electrons B) What are macromolecules? What is a monomer? What is a polymer? What is polymerization? 2.- A macromolecule is a very large molecule commonly created by polymerization of smaller subunits. In biochemistry‚ the term is applied to the three conventional biopolymers (nucleic acids‚ proteins‚ and carbohydrates)‚as well as non-polymeric
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bases found in DAN and RNA; either adenine or guanine. Pyrimidine: a nitrogenous base that has a single-ring structure; one of the two general categories of nitrogenous bases found in DNA and RNA; thymine‚ cytosine‚ or uracil. Purine has a double-ring structure and pyrimidine only has a single ring structure. Both are found in nitrogenous bases however‚ purine is found in adenine or thymine and pyrimidine is found in thymine‚ cytosine or uracil. b. ribosome and ribosomal RNA: Ribosome: a cell organelle
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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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Ch. 51- FAP: sequence of behaviors that are usually carried through to completion. Habituation:loss of sensitivity to unimportant stimuli. Associative learning: associating one stimulus with another. Class. Conditioning: association of an irrelevant stimulus with a fixed physiological response. Cognition: animal’s ability to perceive‚ store‚ process‚ and use info. from its sensory receptors. Agonistic behavior: contest to determine which competitor gains access to a resource. Ch. 54- Nitrogen fixation:
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MACROMOLECULES OF LIFE DEFINITIONS INORGANIC CHEMISTRY A branch of chemistry which studies the structures‚ synthesis and reactions of compounds other than HYPERLINK http//searchbox.hyperdictionary.com/dictionary/hydrocarbons t _blank hydrocarbons and their derivatives ORGANIC CHEMISTRY A branch of chemistry that deals specifically with the structures‚ synthesis and reactions of carbon-containing compounds. CHEMICAL BONDS When two or more atoms are bonded together to form new and more complex aggregates
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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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Unit 3 Lecture Study Guide 1. List the 4 primary tissue types and give the general characteristics and functions of each one. Nerve Tissue: transmit nerve impulses; coordinates and regulates body activities‚ bind and support nerve tissue; carry on phagocytosis; connect neurons to blood vessels‚ changes shape from squamous to cuboidal Epithelial Tissue: covers all free body surfaces and lines organs‚ anchored to connective tissue by basement membrane‚ lacks blood vessels‚ can reproduce
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