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TLS Online TPP Program

#Question id: 2213

Which of the following properties is (are) typical of uniport proteins?

#Unit 2. Cellular Organization

  1. the ability to “flip” within the membrane, releasing the transported molecule at the opposite surface

  2. a permanent open pore through the membrane      

  3. multiple transmembrane α-helical segments

  4. an ATPase activity for the direct coupling of ATP hydrolysis to transport

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TLS Online TPP Program

#Question id: 32305

#Unit 2. Cellular Organization

During endosome maturation, many hydrolases are synthesized and delivered as proenzymes, called: 
TLS Online TPP Program

#Question id: 29106

#Unit 8. Inheritance Biology

For the proper segregation of the chromosome at anaphase-I chiasma formation take place. At which stage of the cell cycle crossing over takes place?
TLS Online TPP Program

#Question id: 3507

#Unit 11. Evolution and Behavior

Rank the following from most general to most specific:

A. gametic isolation

B. reproductive isolating mechanism

C. pollen-stigma incompatibility

D. prezygotic isolating mechanism
TLS Online TPP Program

#Question id: 2356

#Unit 2. Cellular Organization

A protein carrier and the use of cellular energy are required in ____
TLS Online TPP Program

#Question id: 26792

#Unit 8. Inheritance Biology

If an F1 plant (Rr) is backcrossed to the parent with round seeds and wrinkled seed, what proportion of the progeny will have wrinkled seeds from both?