Practice Questions

TLS Online TPP Program

#Question id: 3869

Which one of the following statements about E. coli RNA polymerase (core enzyme) is false?

#Unit 3. Fundamental Processes

It can start new chains de novo or elongate old ones.
It has no catalytic activity unless the sigma factor is bound.
It uses nucleoside 5'-triphosphates as substrates.
Its activity is blocked by rifampicin.

More Questions

TLS Online TPP Program

#Question id: 17673

#Unit 9. Diversity of Life Forms

transport of water, minerals, and nutrients

TLS Online TPP Program

#Question id: 17672

#Unit 9. Diversity of Life Forms

Protection from desiccation

TLS Online TPP Program

#Question id: 17671

#Unit 9. Diversity of Life Forms

Protection from predators

TLS Online TPP Program

#Question id: 17670

#Unit 9. Diversity of Life Forms

The following are common to both charophytes and land plants except

TLS Online TPP Program

#Question id: 17669

#Unit 9. Diversity of Life Forms

Use the letters A-D to label where on the phylogenetic tree each of the following derived characters appeared.

TLS Online TPP Program

#Question id: 8841

#Unit 9. Diversity of Life Forms

Adaptive radiations can be a direct consequence of four of the following five factors. Select the exception.