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TLS Online TPP Program

#Question id: 652

Two proteins, X and Y, bind to the same ligand, A, with the binding curves shown below. Which of the statement is correct for the graph analysing two proteins?

#Unit 1. Molecules and their Interaction Relevant to Biology

  1. For X, Kd is 1 micromole; for Y, Kd is 2 micromole & Because Y is half-saturated at a lower [B], it has a higher affinity for the ligand.

  2. For X, Kd is 3 micromole; for Y, Kd is 6 micromole & Because X is half-saturated at a lower [B], it has a higher affinity for the ligand.

  3. For X, Kd is 6 micromole; for Y, Kd is 2 micromole & Because Y is half-saturated at a lower [A], it has a higher affinity for the ligand.

  4. For X, Kd is 2 micromoles; for Y, Kd is 6 micromole & Because X is half-saturated at a lower [A], it has a higher affinity for the ligand.

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TLS Online TPP Program

#Question id: 3514

#Unit 8. Inheritance Biology

Which of the following are not conclude of that monohybrid cross?
TLS Online TPP Program

#Question id: 11806

#Unit 6. System Physiology – Plant

sap is translocated from areas of supply, called sources, to areas of metabolism or storage, called sinks. Which of the following statements about source and sink are TRUE?

a.) Sinks include any nonphotosynthetic organs of the plant and organs that do not produce enough photosynthetic products to support their own growth or storage needs

b.) Sources include exporting organs that are capable of producing photosynthate in excess of their own needs

c.) During the growing season of the first year, storage root is a sink, when it accumulates sugars received from the source leaves. During the second growing season the same root becomes a source

d.) Roots, tubers, developing fruits, and immature leaves, which must import carbohydrate for normal development, are all examples of sources tissues

Find the correct combination of the source and sink pattern of translocation.
TLS Online TPP Program

#Question id: 4599

#Unit 11. Evolution and Behavior

Many crustaceans (for example, lobsters, shrimp, and crayfish) use their tails to swim, but crabs have reduced tails that curl under their shells and are not used in swimming. This is an example of ________.
TLS Online TPP Program

#Question id: 906

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is least likely to result in protein denaturation?
TLS Online TPP Program

#Question id: 564

#Unit 1. Molecules and their Interaction Relevant to Biology

A good transition-state analog: