TLS Online TPP Program

#Question id: 2123


Which of these statements about the composition of membranes is true?

#XL - T Zoology
  1. All biological membranes contain cholesterol.

  2. Free fatty acids are major components of all membranes.

  3. The inner and outer membranes of mitochondria have different protein compositions.

  4. The lipid composition of all membranes of eukaryotic cells is essentially the same.

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TLS Online TPP Program

#Question id: 4613

#XL - S Microbiology

The questions below refer to the following evolutionary tree, in which the horizontal axis represents time (present time is on the far right) and the vertical axis represents morphological change.  Which species is most closely related to species W?

TLS Online TPP Program

#Question id: 4613

#XL - T Zoology

The questions below refer to the following evolutionary tree, in which the horizontal axis represents time (present time is on the far right) and the vertical axis represents morphological change.  Which species is most closely related to species W?

TLS Online TPP Program

#Question id: 4614

#XL - S Microbiology

Which of these is the extant (that is, living) species most closely related to species X?

TLS Online TPP Program

#Question id: 4614

#XL - T Zoology

Which of these is the extant (that is, living) species most closely related to species X?

TLS Online TPP Program

#Question id: 4615

#XL - S Microbiology

Currently, two of the living elephant species (X and Y) are placed in the genus Loxodonta, and a third surviving species (Z) is placed in the genus Elephas. Assuming this classification reflects evolutionary relatedness, which of the following is the most accurate phylogenetic tree?

TLS Online TPP Program

#Question id: 4615

#XL - T Zoology

Currently, two of the living elephant species (X and Y) are placed in the genus Loxodonta, and a third surviving species (Z) is placed in the genus Elephas. Assuming this classification reflects evolutionary relatedness, which of the following is the most accurate phylogenetic tree?