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TLS Online TPP Program

#Question id: 1704

The single best unique description of the interaction of the αβ T-cell receptor with peptide-MHC is that it:

#XL - Q Biochemistry

  1. Involves non-covalent forces

  2. Results in T-cell activation

  3. Requires the peptide to be presented by MHC class I

  4. Involves CDR (complementarity-determining region) binding to both peptide and MHC

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TLS Online TPP Program

#Question id: 1579

#XL - S Microbiology

Function of Vitronectin 
TLS Online TPP Program

#Question id: 383

#XL - S Microbiology

Three buffers are made by combining a 1 M solution of acetic acid with a 1 M solution of sodium acetate in the ratios shown below

1 M acetic acid              

1 M sodium acetate  

Buffer 1: 10 mL

 90 mL

Buffer 2: 50 mL

50 mL

Buffer 3: 90 mL

10 mL

 Which of these statements is true of the resulting buffers?
TLS Online TPP Program

#Question id: 1024

#XL - T Zoology

The cell wall of Gram-positive bacteria
TLS Online TPP Program

#Question id: 11502

#XL - T Zoology

Which of these statements is false and therefore does not support the hypothesis that certain eukaryotic organelles originated as bacterial endosymbionts? Such organelles
TLS Online TPP Program

#Question id: 2313

#XL - T Zoology

In which of the following cells would you expect to find the most mitochondria?