With respect to microRNAs, which, if any, of the following statements, is false?

a) A microRNA normally works by binding to perfectly complementary sequences within an RNA transcript, usually an mRNA.

b) Like the great majority of mRNAs an miRNA is usually produced as a larger precursor RNA that is capped and has a 3’ poly(A) tail.

c) The precursor miRNA undergoes different types of post-transcriptional cleavage by endoribonucleases that are specific for double-stranded target sequences.

d) A nuclear endoribonuclease called dicer cleaves the miRNA precursor so that it forms a stem-loop RNA.

TLS Online TPP Program

#Question id: 33320

#Unit 1. Molecules and their Interaction Relevant to Biology

Identify the condition in the graph

TLS Online TPP Program

#Question id: 33328

#Unit 2. Cellular Organization

Which of the following reactions is most directly responsible for bacterial cell growth and division?

TLS Online TPP Program

#Question id: 33329

#Unit 2. Cellular Organization

In gram-negative bacteria such as Escherichia coli, cross-links form between:

TLS Online TPP Program

#Question id: 33330

#Unit 2. Cellular Organization

Which of the following structures is NOT typically formed as a result of macromolecular accumulation?

TLS Online TPP Program

#Question id: 33331

#Unit 2. Cellular Organization

Bacterial cell growth depends upon a large number of cellular reactions of a wide variety of types, except?

TLS Online TPP Program

#Question id: 33332

#Unit 2. Cellular Organization

A series of proteins present in all Bacteria, called filamentous temperature sensitiveZ is related to which of the following cell-division protein in eukaryotes?