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TLS Online TPP Program

#Question id: 1056

During penetration of E. coli by the T4 phage

#Unit 4. Cell Communication and Cell Signaling

  1. lysozyme is used to allow entry of the phage capsid.

  2. the tail acts as a "hypodermic needle," injecting the phage DNA into the cell.

  3. the protein fibers digest a hole in the cell wall.

  4. the bacterial receptor molecules open a hole through the cell wall.

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TLS Online TPP Program

#Question id: 1026

#Unit 4. Cell Communication and Cell Signaling

Peptidoglycan
TLS Online TPP Program

#Question id: 2290

#Unit 2. Cellular Organization

The cytoskeleton includes all of the following except
TLS Online TPP Program

#Question id: 5218

#Unit 11. Evolution and Behavior

Several of the different globin genes are expressed in humans, but at different times in development. What mechanism could allow for this?
TLS Online TPP Program

#Question id: 11283

#Unit 10. Ecological Principles

Herbivore ingests plant material with 1000 k j energy form producer and assimilated only 200 k J energy in their blood stream; additionally herbivore invests 120 k j energy in their maintenance. What is production efficiency of that herbivore?
TLS Online TPP Program

#Question id: 22959

#Unit 7. System Physiology – Animal

The hormone that regulates the concentration of calcium & phosphorus in ECF: