Two curves showing the rate versus substrate concentration are shown below for an enzyme-catalyzed reaction. One curve is for the reaction in the presence of substance X. The other curve is for data in the absence of substance X. Examine the curves and tell which statement below is false.

#Question id: 787

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following statement is INCORRECT with respect to the structure of DNA?

#Question id: 786

#Unit 1. Molecules and their Interaction Relevant to Biology

A = 27%                    G = 30%   T = 21%              C = 22%

If the genome of a newly isolated virus displays the base composition above, the virus most likely consists of ______.

#Question id: 785

#Unit 1. Molecules and their Interaction Relevant to Biology

Several types of very short RNAs repress—or silence—expression of genes with homology to those short RNAs. They are produced from a variety of sources and direct the silencing of genes in the following different ways-

#Question id: 783

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the statements below is FALSE?

#Question id: 780

#Unit 1. Molecules and their Interaction Relevant to Biology

Drosha and Pasha:

#Question id: 771

#Unit 1. Molecules and their Interaction Relevant to Biology

MicroRNAs are:

P. synthesized as long pri-miRNAs;

Q. transcribed by RNA polymerase II;

R. synthesized from pre-microRNAs by an RNase III enzyme Drosha in the cytoplasm;

S. synthesized from pri-miRNAs by an enzyme Dicer in the nucleus.