Unit 1 Revision Questions 1. Proteins 1. What elements are in proteins? 2. What are the basic units of proteins? 3. What is meant by primary, secondary, and tertiary structure of proteins? 4. What is a fibrous protein? 5. Explain how a muscle contracts. 6. What is a globular protein? 7. What is a conjugated protein? 8. Give examples of fibrous, globular, and conjugated proteins. 2. Enzymes 1. 2. 3. 4. 5.
What is an enzyme? How does an enzyme work? Explain the effect of temperature and pH on enzyme action. Explain the effect of enzyme concentration on enzyme action. Explain the effect of substrate concentration on enzyme action. 6. How does a competitive inhibitor effect enzyme action? 7. How does a non-competitive inhibitor effect enzyme action? 8. How are enzymes activated? 3. Protein Synthesis 1. What is DNA? 2. Describe the structure of a nucleotide. 3. Explain how chemical and hydrogen bonds hold a DNA molecule together. 4. What are the 4 bases, and how do they pair? 5. What are the 3 differences between DNA and RNA? 6. What is a codon? 7. What is an anti-codon? 8. What is the function on mRNA? 9. What is the function of tRNA? 10. Explain the steps involved in transcription. 11. Explain the steps involved in translation. Cell Structure 1. 2. 3. 4. 5. 6. 7. 8. 9.
What What What What What What What What What
is is is is is is is is is
the the the the the the the the the
function function function function function function function function function
of of of of of of of of of
the the the the the the the the the
nucleus? nucleolus? ribosomes? RER? SER? Golgi apparatus? lysosomes? mitochondria? cell membrane?