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?

TLS Online TPP Program

#Question id: 5581

#Unit 5. Developmental Biology

In humans, an individual with an XXY chromosomal complement will develop as

TLS Online TPP Program

#Question id: 5582

#Unit 5. Developmental Biology

Secretion of Müllerian-inhibiting substance by Sertoli cells:

TLS Online TPP Program

#Question id: 5583

#Unit 5. Developmental Biology

In mammals, dosage compensation is carried out by:

TLS Online TPP Program

#Question id: 5584

#Unit 5. Developmental Biology

Which one of the following provides rapid block to polyspermy during sea urchin fertilization?

TLS Online TPP Program

#Question id: 5585

#Unit 5. Developmental Biology

Hermaphrodite is the sexual phenotype of a gain-of-function transformer-1 in both X and XX of C. elegans. Which of the following loss-of-function will also result in hermaphrodite regardless of copy number of X?

TLS Online TPP Program

#Question id: 5586

#Unit 5. Developmental Biology

Plants exhibit an astounding capacity for perpetual growth throughout their life span, a phenomenon known as