Practice Questions

TLS Online TPP Program

#Question id: 341

Which force can stabilize a DNA double-helix?

#Unit 1. Molecules and their Interaction Relevant to Biology

Hydrophobic bases are found in the interior of the helix where each base-pair is stabilized by the same number of hydrogen bonds.
Hydrophilic sugar-phosphate groups are found on the exterior of the helix where they can interact with water.
Non-covalent N-glycosidic bonds can form between nitrogenous bases in opposite strands in the helix.
Covalent base-stacking interactions can occur between adjacent bases within the same strand in the helix.

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TLS Online TPP Program

#Question id: 4120

#Unit 3. Fundamental Processes

Which of the following homolog matching is incorrectly matched with thier respective subunits?

	Bacterial	Archaea	RNAPI	RPAII	RPAIII
1.	B’	A’/A’’	RPA1	RPB1	RPC1
2.	B	K	RPA3	RPB2	RPC4
3.	aI	D	RPC5	RPB3	RPC5
4.	aII	L	RPC9	RPB11	RPC9

TLS Online TPP Program

#Question id: 10136

#Unit 6. System Physiology – Plant

A protein complex contain a Rieske protein known as

TLS Online TPP Program

#Question id: 546

#Unit 1. Molecules and their Interaction Relevant to Biology

Enzymes are potent catalysts because they:

TLS Online TPP Program

#Question id: 5086

#Unit 5. Developmental Biology

Cells move to new positions as an embryo establishes its three germ tissue layers during ________.

TLS Online TPP Program

#Question id: 2934

#Unit 2. Cellular Organization

Cyclin D/Cdk4 functions during: