#Question id: 10371
#Unit 6. System Physiology – Plant
There are three essential nod gene for every bacterial species that is−NodA, NodB and NodC, that are required for synthesizing this basic structure such as;
a) NodA is an N-acyltransferase that catalyzes the addition of a fatty acyl chain
b) NodB is a chitin-oligosaccharide synthase that links the acetyl group of the terminal nonreducing sugar
c) NodC is a chitin-oligosaccharide synthase that links N-acetyl-D-glucosamine monomers
d) NodB is a chitin-oligosaccharide deacetylase that removes the acetyl group from the terminal nonreducing sugar
e) NodC is a chitin-oligosaccharide deacetylase that removes links N-acetyl-D-glucosamine monomers
Which of the following statements about NOD Factor is incorrect?
#Question id: 1371
#Unit 4. Cell Communication and Cell Signaling
A researcher was studying a protein ‘A’ which has been observed to move across cells when an extracellular electrical stimulus is provided. An artificial peptide ‘Z’ was prepared which resembles the structure of pannexins and competitively inhibits pannexon formation. Which one of the following statements will best explain the fate of protein ‘A’ if, the cells are treated with peptide ‘Z’ and then, electrical stimulus is provided.
#Question id: 18088
#Unit 13. Methods in Biology
#Question id: 23337
#General Aptitude
#Question id: 7312
#Unit 5. Developmental Biology
Following
statements regarding to the classes of genes that regulate floral development:
A. Floral organ identity genes
directly control floral identity. The proteins encoded by these genes are
transcription factors that likely control the expression of other genes whose
products are involved in the formation and/or function of floral organs.
B. Cadastral genes act as spatial
regulators of the floral organ identity genes by setting boundaries for their
expression.
C. Meristem identity genes are
necessary for the initial induction of the organ identity genes. These genes
are the positive regulators of floral organ identity.
D. Cadastral genes act as
negative regulators of the floral organ identity genes by inhibits their
expression.
E. Meristem identity genes are
the negative regulators of floral organ identity genes.
Which of the above statements are true?