TLS Online TPP Program

#Question id: 101


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?

#SCPH05 I Biotechnology
  1. Test both for solubility in water. Sucrose is very soluble; lactose is only minimally soluble.

  2. Test for the ability to reduce Ag+. Only lactose will react.

  3. Dissolve each in water and record the pH. Lactose is far more acidic than sucrose.

  4. React each with bromine (Br2) water. Only sucrose will react.

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TLS Online TPP Program

#Question id: 68

#SCPH05 I Biotechnology

Match the following functional groups given in column I with their respective representatives given in column II.

COLUMN I               COLUMN II

1. Anhydride               a. RCOOR

2. Ether                       b. ROCOCH3

3. Acetyl                     c. ROR

4. Amido                     d. RCOOCOR

5. Ester                        e. RCONH2

TLS Online TPP Program

#Question id: 68

#SCPH06 I Botany

Match the following functional groups given in column I with their respective representatives given in column II.

COLUMN I               COLUMN II

1. Anhydride               a. RCOOR

2. Ether                       b. ROCOCH3

3. Acetyl                     c. ROR

4. Amido                     d. RCOOCOR

5. Ester                        e. RCONH2

TLS Online TPP Program

#Question id: 69

#SCPH05 I Biotechnology

Which of the following is the diastereomer of the following compound?

TLS Online TPP Program

#Question id: 69

#SCPH06 I Botany

Which of the following is the diastereomer of the following compound?

TLS Online TPP Program

#Question id: 70

#SCPH05 I Biotechnology

The dimensions of living cells are limited, on the lower end by the minimum number of biomolecules necessary for function, and on the upper end by the rate of diffusion of solutes such as oxygen. Except for highly elongated cells, they usually have lengths and diameters in the range of

TLS Online TPP Program

#Question id: 70

#SCPH06 I Botany

The dimensions of living cells are limited, on the lower end by the minimum number of biomolecules necessary for function, and on the upper end by the rate of diffusion of solutes such as oxygen. Except for highly elongated cells, they usually have lengths and diameters in the range of