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: 1392

#SCPH05 I Biotechnology

In the nematode C. elegans, ced-9 prevents apoptosis in a normal cell in which of the following ways?

TLS Online TPP Program

#Question id: 1392

#SCPH06 I Botany

In the nematode C. elegans, ced-9 prevents apoptosis in a normal cell in which of the following ways?

TLS Online TPP Program

#Question id: 1392

#SCPH28 | Zoology

In the nematode C. elegans, ced-9 prevents apoptosis in a normal cell in which of the following ways?

TLS Online TPP Program

#Question id: 1393

#SCPH05 I Biotechnology

In research on aging (both cellular aging and organismal aging), it has been found that aged cells do not progress through the cell cycle as they had previously. Which of the following, if found in cells or organisms as they age, would provide evidence that this is related to cell signalling?

TLS Online TPP Program

#Question id: 1393

#SCPH06 I Botany

In research on aging (both cellular aging and organismal aging), it has been found that aged cells do not progress through the cell cycle as they had previously. Which of the following, if found in cells or organisms as they age, would provide evidence that this is related to cell signalling?

TLS Online TPP Program

#Question id: 1393

#SCPH28 | Zoology

In research on aging (both cellular aging and organismal aging), it has been found that aged cells do not progress through the cell cycle as they had previously. Which of the following, if found in cells or organisms as they age, would provide evidence that this is related to cell signalling?