TLS Online TPP Program

#Question id: 124


What is the role of cholesterol in animal cell membranes?

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. Blocks the association of the fatty acyl chains of phospholipids at high temperature.

  2. Aids in the transport of small hydrophobic molecules across the membrane.

  3. Is a receptor site for hormones on the surface of membranes.

  4. Broadens the temperature range of optimum membrane fluidity.

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TLS Online TPP Program

#Question id: 98

#Unit 1. Molecules and their Interaction Relevant to Biology

The elasticity and resistance to compression of connective tissue is due to

TLS Online TPP Program

#Question id: 99

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following are the main reasons that glycoproteins are so diverse when compared to other proteoglycans are

A) they may contain different sugars in different combinations and chain lengths.

B) β or a-glycosidic linkages may join various carbon atoms in the sugars.

C) they are found in both bacterial, plant and animal cells.

TLS Online TPP Program

#Question id: 100

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following contain NeuNAc residues and sulfated sugars, and their negative charges contribute to the viscosity of mucins.

TLS Online TPP Program

#Question id: 101

#Unit 1. Molecules and their Interaction Relevant to Biology

You have two bottles, each of which contains a white, crystalline substance. Your lab director tells you that one contains lactose and the other sucrose. Your job is to determine which bottle contains which sugar. Which procedure would you use?

TLS Online TPP Program

#Question id: 102

#Unit 1. Molecules and their Interaction Relevant to Biology

 The structure of a disaccharide is shown below. Which statement is correct about following structure?

TLS Online TPP Program

#Question id: 103

#Unit 1. Molecules and their Interaction Relevant to Biology

Lipids may be either hydrophobic or ________.