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TLS Online TPP Program

#Question id: 2195

Which of the following statements about the mobility of membrane components is true?

#XL - S Microbiology

  1. Proteins and lipids move equally rapidly within the plane of the membrane.

  2. Lipids generally move more rapidly than proteins within the plane of the membrane.

  3. Proteins generally move more rapidly than lipids within the plane of the membrane.

  4. Lipids and proteins “flip-flop” between membrane leaflets more readily than they move within the plane of the membrane.

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TLS Online TPP Program

#Question id: 58

#XL - Q Biochemistry

A covalent chemical bond is one in which ________.
TLS Online TPP Program

#Question id: 59

#XL - Q Biochemistry

Nitrogen (N) normally forms three covalent bonds with a valence of five. However, ammonium has four covalent bonds, each to a different hydrogen (H) atom (H has a valence of one). What do you predict to be the charge on ammonium?
TLS Online TPP Program

#Question id: 61

#XL - Q Biochemistry

Which of the following correctly describes chemical equilibrium?
TLS Online TPP Program

#Question id: 78

#XL - T Zoology

Which is true about naturally occurring monosaccharides?
TLS Online TPP Program

#Question id: 79

#XL - T Zoology

The structure of D-arabinose is shown below. How many stereoisomers are possible for this molecule?
TLS Online TPP Program

#Question id: 80

#XL - T Zoology

 Examine the Fischer projection below. How is this carbohydrate classified