Practice Questions

TLS Online TPP Program

#Question id: 28835

All microtubules are nucleated from structures known as microtubule-organizing centers, or MTOCs, select the correct prediction about MTOCs?

#Unit 2. Cellular Organization

Both (+) and (−) end of the microtubule extends away from it
Both (+) and (−) end of the microtubule stays anchored in the MTOC
(−) end of the microtubule stays anchored in the MTOC while the (+) end extends away from it
(+) end of the microtubule stays anchored in the MTOC while the (-) end extends away from it

More Questions

TLS Online TPP Program

#Question id: 1000

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is (are) true of the B oxidation of long-chain fatty acids?

1. The enzyme complex that catalyzes the reaction contains biotin.

2. FADH2 serves as an electron carrier.

3. NADH serves as an electron carrier.

4. Oxidation of an 18-carbon fatty acid produces six molecules of propionyl-CoA.

5. Oxidation of a 15-carbon fatty acid produces at least one propionyl-CoA.

TLS Online TPP Program

#Question id: 1001

#Unit 1. Molecules and their Interaction Relevant to Biology

The following fatty acid, in which the indicated carbon is labeled with ¹⁴C, is fed to an animal: ¹⁴CH₃(CH₂)₉COOH After allowing 30 minutes for fatty acid B oxidation, the label would most likely be recovered in:

TLS Online TPP Program

#Question id: 1002

#Unit 1. Molecules and their Interaction Relevant to Biology

What would be the product of the transamination of the structure shown below? (The unionized forms are shown.)

TLS Online TPP Program

#Question id: 1003

#Unit 1. Molecules and their Interaction Relevant to Biology

The glucose-alanine cycle provides ________.

TLS Online TPP Program

#Question id: 1004

#Unit 1. Molecules and their Interaction Relevant to Biology

Which structure below is PRPP?