How does the amino acid sequence determine the three-dimensional conformation of a protein?
How does the amino acid sequence determine the three-dimensional conformation of a protein?
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IB Biology
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In what ways can a protein consist of either a single polypeptide or multiple polypeptides linked together?
In what ways can a protein consist of either a single polypeptide or multiple polypeptides linked together?
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How do genes code for the amino acid sequence of polypeptides?
How do genes code for the amino acid sequence of polypeptides?
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How can amino acids be linked in any sequence, and what range of possible polypeptides does this create?
How can amino acids be linked in any sequence, and what range of possible polypeptides does this create?
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Why are there 20 different amino acids in polypeptides synthesized on ribosomes?
Why are there 20 different amino acids in polypeptides synthesized on ribosomes?
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How are amino acids linked together by condensation to form polypeptides?
How are amino acids linked together by condensation to form polypeptides?
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How should health claims about lipids in diets be assessed for validity?
How should health claims about lipids in diets be assessed for validity?
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How can body mass index (BMI) be determined by calculation or using a nomogram?
How can body mass index (BMI) be determined by calculation or using a nomogram?
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How can molecular visualization software be used to compare cellulose, starch, and glycogen?
How can molecular visualization software be used to compare cellulose, starch, and glycogen?
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How can evidence and the methods used to gather it be evaluated for health claims made about lipids?
How can evidence and the methods used to gather it be evaluated for health claims made about lipids?
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Top Questions
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Discuss the advantages and disadvantages of genetically modifying crops, including soya, maize and rice
Sourav
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Outline the process of genetic modification using bacterial production of a human protein as an example, limited to: (a) isolation of the DNA making up a human gene using restriction enzymes, forming sticky ends (b) cutting of bacterial plasmid DNA with the same restriction enzymes, forming complementary sticky ends (c) insertion of human DNA into bacterial plasmid DNA using DNA ligase to form a recombinant plasmid (d) insertion of recombinant plasmids into bacteria (specific details are not required) (e) multiplication of bacteria containing recombinant plasmids (f) expression in bacteria of the human gene to make the human protein
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Outline examples of genetic modification: (a) the insertion of human genes into bacteria to produce human proteins (b) the insertion of genes into crop plants to confer resistance to herbicides (c) the insertion of genes into crop plants to confer resistance to insect pests (d) the insertion of genes into crop plants to improve nutritional qualities
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Describe genetic modification as changing the genetic material of an organism by removing, changing or inserting individual genes
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Describe and explain the conditions that need to be controlled in a fermenter, including: temperature, pH, oxygen, nutrient supply and waste products
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Describe how fermenters can be used for the large-scale production of useful products by bacteria and fungi, including insulin, penicillin and mycoprotein
