Practice Questions

TLS Online TPP Program

#Question id: 547

The role of an enzyme in an enzyme-catalyzed reaction is to:

#Unit 1. Molecules and their Interaction Relevant to Biology

bind a transition state intermediate, such that it cannot be converted back to substrate.
ensure that all of the substrate is converted to product.
ensure that the product is more stable than the substrate.
increase the rate at which substrate is converted into product.

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TLS Online TPP Program

#Question id: 11914

#Unit 10. Ecological Principles

Alder trees, which harbour nitrogen-fixing bacteria in their roots, provide nitrogen to soils developing on sandbars rivers, this is an example of,

TLS Online TPP Program

#Question id: 18709

#Unit 13. Methods in Biology

qPCR can be done by

i) cyanin dye or SYBR green – to measure amplification

ii) Taqman assay – measure extension

iii) molecular beacons - denaturation

TLS Online TPP Program

#Question id: 663

#Unit 1. Molecules and their Interaction Relevant to Biology

________ is a technique used to analyze the macromolecular structure of proteins in solution.

TLS Online TPP Program

#Question id: 21954

#Unit 2. Cellular Organization

Interphase chromatin remain attached to nuclear wall proteins via

TLS Online TPP Program

#Question id: 2149

#Unit 2. Cellular Organization

A ligand-gated ion channel (such as the nicotinic acetylcholine receptor) is: