Practice Questions

TLS Online TPP Program

#Question id: 454

Which statement is false about most metabolic pathways?

#Unit 1. Molecules and their Interaction Relevant to Biology

Most pathways are reversible under physiological conditions.
Pathways serve to increase the efficiency of energy transfers.
The rates of pathway reactions vary to respond to changing conditions.
The enzymes that catalyze reactions in metabolic pathways generally catalyze only a single step.

More Questions

TLS Online TPP Program

#Question id: 2144

#Unit 2. Cellular Organization

The type of membrane transport that uses ion gradients as the energy source is:

TLS Online TPP Program

#Question id: 2145

#Unit 2. Cellular Organization

An electrogenic Na+ transporter:

TLS Online TPP Program

#Question id: 2146

#Unit 2. Cellular Organization

In one catalytic cycle, the Na+/K+ ATPase transporter transports:

TLS Online TPP Program

#Question id: 2147

#Unit 2. Cellular Organization

Movement of water across membranes is facilitated by proteins called:

TLS Online TPP Program

#Question id: 2148

#Unit 2. Cellular Organization

The specificity of the potassium channel for K+ over Na+ is mainly the result of the:

TLS Online TPP Program

#Question id: 2149

#Unit 2. Cellular Organization

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