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TLS Online TPP Program

#Question id: 1032

A research laboratory is investigating environmental factors that would inhibit the growth of Archaea. One question they have is if adding the antibiotic penicillin would be effective in controlling their growth. What do you think the outcome would be if they tried this?

#Unit 4. Cell Communication and Cell Signaling

  1. The penicillin wouldn't affect the Archaea because it prevents crosslinking of peptidoglycan-Archaea don't have this compound in their cell walls.

  2. The penicillin will inhibit cell wall formation in the Archaea, killing them.

  3. The penicillin will slow down the growth of the Archaea by damaging the cell wall, but they will still be able to grow somewhat.

  4. The penicillin will enhance the growth of the Archaea by providing a rich nutrient source.

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TLS Online TPP Program

#Question id: 28835

#Unit 2. Cellular Organization

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

#Question id: 28836

#Unit 2. Cellular Organization

There are two different types of microtubule structures can exist____
a) the T form bound to GDP 
b) the T form bound to GTP 
c) the D form bound to GTP 
d) the D form bound to GDP
TLS Online TPP Program

#Question id: 28837

#Unit 2. Cellular Organization

Rapid interconversion between a growing and shrinking state, if the change from growth to shrinkage is called____
TLS Online TPP Program

#Question id: 28838

#Unit 2. Cellular Organization

Rapid interconversion between a growing and shrinking state, if the change from shrinkage to growth is called____
TLS Online TPP Program

#Question id: 28839

#Unit 2. Cellular Organization

Which of the following nucleates assembly of a microtubule by forming a template corresponding to the (−) end?
TLS Online TPP Program

#Question id: 28840

#Unit 2. Cellular Organization

Which of the following 8-subunit protein complex that binds to sites along the microtubule and recruits γ-TuRC, which nucleates a new microtubule to form a microtubule branch?