In invertebrates, an extracellular matrix that forms a fibrous mat around the egg and is involved in sperm-egg recognition is called as____

#Question id: 1927

#Unit 4. Cell Communication and Cell Signaling

Which of the following statements is TRUE of malignant lymphoid cells?

#Question id: 4663

#Unit 3. Fundamental Processes

Which two polymerases function in transcriptional repression directed by nuclear siRNAs in plants?

#Question id: 33459

#Unit 1. Molecules and their Interaction Relevant to Biology

#Question id: 891

#Unit 1. Molecules and their Interaction Relevant to Biology

The folding pathways of some proteins require two enzymes that catalyze isomerization reactions such as,

a) Peptide prolyl isomerase (PPI)  catalyzes the elimination of folding intermediates with inappropriate disulfide cross-links

b) Protein disulfide isomerase (PDI) enzyme that catalyzes the interchange, or shuffling, of disulfide bonds until the bonds of the native conformation are formed

c) Peptide prolyl cis-trans isomerase (PPI) catalyzes the interconversion of the cis and trans isomers of Proline residue peptide bonds

d) Peptide prolyl isomerase (PPI) can be a fast step in the folding of proteins that contain some Pro peptide bonds in the cis conformation

Which of the following combinations is correct about protein folding pathways?

#Question id: 21809

#Unit 12. Applied Biology