Practice Questions

TLS Online TPP Program

#Question id: 10184

Which of the following statement is incorrect about plasmalogen?

#Unit 1. Molecules and their Interaction Relevant to Biology

Plasmalogens are glycerophospholipids in which the C1 substituent of the glycerol moiety is linked via an α, β-unsaturated ether linkage in the cis configuration.
Plasmalogens are glycerophospholipids in which the C1 substituent of the glycerol moiety is linked via an α, β-unsaturated ester linkage in the cis configuration.
Ethanolamine, choline, and serine form the most common plasmalogen head groups.
Because the vinyl ether group is easily oxidized, plasmalogens may react with oxygen free radicals, by-products of normal metabolism, thereby preventing free-radical damage to other cell constituents.

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TLS Online TPP Program

#Question id: 2238

#Unit 2. Cellular Organization

Consider the transport of glucose into an erythrocyte by facilitated diffusion. When the glucose concentrations are 5 mM on the outside and 0.1 mM on the inside, the free-energy change for glucose uptake into the cell is: (These values may be of use to you: R = 8.315 J/mol·K; T = 298 K; 9 (Faraday constant) = 96,480 J/V; N = 6.022×10²³ /mol.)

TLS Online TPP Program

#Question id: 4217

#Unit 3. Fundamental Processes

Which of the following statements correctly describes the function of a signal peptide?

TLS Online TPP Program

#Question id: 161

#Unit 1. Molecules and their Interaction Relevant to Biology

Two amino acids of the standard 20 contain sulfur atoms. They are:

TLS Online TPP Program

#Question id: 11937

#Unit 7. System Physiology – Animal

Transmission of the electrical signal from the dendrites to the soma of a neuron occurs by which of the following?