the oxidation of iodine is mediated by a membrane-bound enzyme found in the thyrocyte apical membrane, this enzyme is called____

#Question id: 12431

#Unit 10. Ecological Principles

#Question id: 28307

#Unit 5. Developmental Biology

Symmetrical beating of the flagellum is changed into a rapid asynchronous beat with a higher degree of bending is an example of ____

#Question id: 709

#Unit 1. Molecules and their Interaction Relevant to Biology

A sequence of amino acids in a certain protein is found to be -Ser-Gly-Pro-Gly-.  The sequence is most probably part of a(n):

#Question id: 31264

#Unit 4. Cell Communication and Cell Signaling

#Question id: 2875

#Unit 2. Cellular Organization

Which of the following statements is/are CORRECT from the following?

I. The chromosome of the small monkey DNA virus SV40 is a circular, double-helical DNA molecule of 5000 bp.

II. The phage Lambda genome is a linear single-stranded molecule in the virion particle.

III. Circular DNA molecules purified from both bacteria and eukaryotes are usually negatively supercoiled, having values of sigma of approximately –0.06.

IV. Prokaryotes have a special type I topoisomerase known as “DNA gyrase” that introduces, rather than removes, negative supercoils.

V. DNA disentanglement, generally catalyzed by a type II topoisomerase, is also required for a successful round of DNA replication and cell division in eukaryotes.