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TLS Online TPP Program

#Question id: 4608

What must be true of any organ described as vestigial?

#XL - S Microbiology

  1. It must be analogous to some feature in an ancestor.

  2. It must be homologous to some feature in an ancestor.

  3. It must be both homologous and analogous to some feature in an ancestor.

  4. It need be neither homologous nor analogous to some feature in an ancestor.

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TLS Online TPP Program

#Question id: 9577

#XL - T Zoology

The epidermal coloration of the African grasshopper is a striking example of irreversible developmental responses to environmental conditions. Which of the following statements is true?
TLS Online TPP Program

#Question id: 9578

#XL - T Zoology

Bergmann’s rule states that,
TLS Online TPP Program

#Question id: 9579

#XL - T Zoology

Allen’s rule states that,
TLS Online TPP Program

#Question id: 9581

#XL - Q Biochemistry

These four Photosystem II, Cytochrome b6 f, Photosystem I and ATP synthase integral membrane complexes are vectorially oriented in the thylakoid membrane to function as follows, find out the incorrect statements;
TLS Online TPP Program

#Question id: 9583

#XL - Q Biochemistry

 A mechanism known as the Q cycle accounts for most of the observations in which structure and reactions of plastoquinone that operate in,
TLS Online TPP Program

#Question id: 9587

#XL - Q Biochemistry

The structure of the four major protein complexes in the thylakoid membrane are organised form such as ;

a.) PSII is located predominantly in the stacked regions of the thylakoid membrane and Cytochrome b6f complexes are evenly distributed

b.) PSI and ATP synthase are found in the unstacked regions protruding into the stroma

c.) Lateral separation of the two photosystems requires that electrons and protons produced by PSII be transported directly to PSI and the ATP coupling enzyme

d.) Four main protein complexes of the thylakoid membrane, shown also are the two diffusible electron carriers—plastocyanin, which is located in the thylakoid lumen, and plastohydroquinone (PQH2) in the membrane, The lumen has a positive electrical charge with respect to the stroma

Which of the following statements correct?