Cytosine makes up 42% of the nucleotides in a sample of DNA from an organism. Approximately what percentage of the nucleotides in this sample will be thymine?

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: