The enzyme fumarase catalyzes the reverse hydration of fumaric acid to l-malate, but it will not catalyze the hydration of maleic acid, the cis isomer of fumaric acid. This is an example of:

TLS Online TPP Program

#Question id: 95

#Unit 1. Molecules and their Interaction Relevant to Biology

What is the name of the disaccharide shown below that is formed by joining two monomers of D-glucose

TLS Online TPP Program

#Question id: 3324

#Unit 11. Evolution and Behavior

If only 20 males and 20 female grizzlies exist today, but only 10 of the males and 6 female breed, what are effective population size?

TLS Online TPP Program

#Question id: 12394

#Unit 6. System Physiology – Plant

 Which one of the following fungal phytotoxin, stimulates both rapid proton extrusion and transient growth in stem and coleoptile sections?

TLS Online TPP Program

#Question id: 15656

#Unit 13. Methods in Biology

You are studying a new strain of E. coli that can utilize the disaccharide melibiose very efficiently. You find that utilization depends on the enzyme melibiase, which is encoded by the gene Mel1. Mel1 is not expressed unless melibiose is present in the growth medium. Explain the two regulatory pathways for Mel1 that can explain the behavior of the MelA– and MelB– mutations. For each regulatory pathways what is a role for the inducer melibiose?

TLS Online TPP Program

#Question id: 1286

#Unit 4. Cell Communication and Cell Signaling

Syndecans are cell-surface proteoglycans that:

a. bind to collagens.

b. bind to multi-adhesive matrix proteins.

c. anchor cells to the extracellular matrix.