Which of these would be a valid hypothesis? Select one: a. Humans are controlled by forces beyond our understanding. b. Humans and bacteria share a common genetic code. c. Humans should help in the conservation of other animal species. d. Humans are responsible for the sustainable use of resources. e. Human history is determined by a series of supernatural events. Feedback Your answer is correct. Question 2 Incorrect Mark 0.00 out of 2.00 Flag question Question text A hypothesis
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Little Celleste the cell was in the middle of his meal‚ when he thought for a minute about what he was eating‚ and how it had gotten there. The great Father Cellmas came to his mind‚ so he called out for him because he knew he could solve his answers. Since after all Father Cellmas was the man who knew all the questions you asked him about yourself. Father Cellmas was in the middle of a nap when he heard the yell of a small cell. “I wonder who is calling for me?” Father Cellmas wonders‚ and gets
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* Pore complex: regulates entry/exit of proteins‚ RNAs and macromolecules * Nucleoplasm: the cytoplasm of the nucleus * Nuclear lamina: a netlike array of protein filaments that maintains the shape of the nucleus * Nuclear matrix: fibres extending throughout the nuclear interior * Nucleolus: rRNA is synthesized from instruction of DNA‚ proteins imported from the cytoplasm are assembled with rRNA into large and small ribosomal subunits‚ these subunits exist and assemble into a ribosome
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Biology 12 - The Cell Part A: In ONE sentence‚ in the space provided‚ describe the function of the following organelles. Use point form. Use your own words. Paraphrase and condense the textbook definitions. DO NOT copy any definition or part of a definition. In the box to the left of each definition‚ make a sketch of the organelle. |SEE NOTES |1. cell membrane: control what goes in and out of cell‚ forms barrier with outside environment |
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A Tour of the Cell Overview: The Importance of Cells • All organisms are made of cells. o Many organisms are single-celled. o Even in multicellular organisms‚ the cell is the basic unit of structure and function. • The cell is the simplest collection of matter that can live. • All cells are related by their descent from earlier cells. Concept 2 Eukaryotic cells have internal membranes that compartmentalize their functions Prokaryotic and eukaryotic cells
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polypeptide containing 267 amino acids with eight alpha helices (A-E) and eight beta sheets(a-e). It contains a binding site cleft that contains amino acids Tyr 80‚ Glu 177‚ Arg 180‚ Trp 211‚ and Tyr 123. The large ribosomal subunit binds to the binding cleft‚ where a specific adenine of the ribosomal subunit is sandwiched between Tyr 80 and Tyr 123. Arg 180 protonates the N-3 of adenine and breaks the bond between the the C-1’ of the ribose sugar and the N-9 of the adenine. Cleavage between the sugar and
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7 properties of Life |Description/Examples | | |Order |All living things exhibit complex but ordered organization; structure of a pinecone | |Regulation |The environment outside of the organism may change drastically‚ but the organism can adjust its internal | | |environment keeping it within appropriate limits; temperature (shivering and sweating) | |Growth & Development |Information carried
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ASBiology and Disease * Causes of disease * Pathogens Disease suggests a malfunction of the body or mind which has an adverse effect on good health For a micro-organism to be considered a pathogen it must * Gain entry to the host * Colonise the tissue of the host * Resist the defences of the host * Cause damage to the host tissues Pathogen Infection Disease Entry pathways * Gas exchange system * Digestive system Natural defences * Mucous layer
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studying this Unit‚ you will be able to • define the biomolecules like carbohydrates‚ proteins and nucleic acids; • classify carbohydrates‚ proteins‚ nucleic acids and vitamins on the basis of their structures; • explain the difference between DNA and RNA; • appreciate the role of biomolecules in biosystem. Biomolecules “It is the harmonious and synchronous progress of chemical reactions in body which leads to life”. 14 Unit A living system grows‚ sustains and reproduces itself. The most
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information from DNA through RNA to the production of a sequence of amino acids in a polypeptide:-The structures involved in polypeptide synthesis are:DNA: A gene contains a sequence of bases to code for a protein. Every set of 3 bases is called a codon. RNA: RNA is similar to DNA except that instead of deoxyribose as the sugar‚ it has ribose. It is single stranded‚ and instead of thymine‚ there is uracil. There are 3 forms involved in polypeptide synthesis:mRNA: Messenger RNA carries the genetic code
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