Match the following inhibitors (Column I) with their effect (Column II).

Column I	Column II
A. A23187	I. endoplasmic reticulum Ca2+ ATPase inhibitor
B. valinomycin	II. Na+/K+ ATPase inhibitor
C. thapsigargin	III. K+ ionophore
D. ouabain	IV. Ca2+ ionophore

TLS Online TPP Program

#Question id: 272

#Unit 1. Molecules and their Interaction Relevant to Biology

 Which is not a biological function of RNA?

TLS Online TPP Program

#Question id: 273

#Unit 1. Molecules and their Interaction Relevant to Biology

Stem-loop structures in RNA resemble the ________ form of double-helical DNA.

TLS Online TPP Program

#Question id: 274

#Unit 1. Molecules and their Interaction Relevant to Biology

Chromatin was first observed and named by ________.

TLS Online TPP Program

#Question id: 275

#Unit 1. Molecules and their Interaction Relevant to Biology

What is the approximate diameter of a chromatin fiber?

TLS Online TPP Program

#Question id: 276

#Unit 1. Molecules and their Interaction Relevant to Biology

The packaging of DNA in cells results in about a ________-fold reduction in length compared to the fully extended DNA (fully stretched out).

TLS Online TPP Program

#Question id: 277

#Unit 1. Molecules and their Interaction Relevant to Biology

Which statement is not true about histones?