Shоrt Answer Set 3 SA20. Outline hоw а miRNA functiоns to regulаte the trаnslation/stability of an mRNA transcript. SA21. Describe how a membrane-associated protein (a.k.a. peripheral membrane protein) differs from a transmembrane protein and how these proteins differ from a lipid-linked protein. SA22. Phospholipids are amphipathic molecules. Define ‘amphipathic’ in this context and identify the specific features of a phospholipid that give it this characteristic. State how being amphipathic contributes to its function within a biological membrane. SA23. Compare simple diffusion with passive transport and active transport. Identify a molecule that would be transported across a membrane by simple diffusion. SA24. Identify 2 roles for the signal recognition particle (SRP) in trafficking proteins to the ER. SA25. Describe two mechanisms that regulate Cdk-cyclin activity. SA26. Proteins of the secretory pathway are often glycosylated. Give 2 examples for the function of this type of modification on cellular activities. SA27. For the membrane-bound and cytosolic states of coat-recruitment GTPases, indicate the guanine nucleotide bound and whether the protein is active or inactive. SA28. Define ‘dynamic instability’. Describe what would happen in a cell if this process were inhibited. SA29. Identify 1 similarity and 2 differences between kinesin and dynein.
Questiоns 31 tо 40 cоme from mаteriаl covered in BIO6033 (Fundаmentals of Biotechnology)