TLS Online TPP Program

#Question id: 10568


Turgid cell dropped into sucrose solution , the cell has Yp = 0.488 MPa Ys = –0.732 MPa Yw = –0.244 Mpa , 0.3 M Sucrose solution contain Yp = 0 MPa Ys = –0.732 MPa Yw = –0.732 Mpa , Choose the correct option

#Unit 6. System Physiology – Plant
  1. Water particles move out of the cell, Cell membrane Shrinks and detaches from the cell wall
  2. Water particles move into the cell, cell wall counteracts osmotic pressure  to prevent swelling and lysis
  3. No net movement of water particles , Cell membrane is attached to cell wall
  4. A solution that has the same solute concentration as another solution
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TLS Online TPP Program

#Question id: 11397

#Unit 9. Diversity of Life Forms

Which statement about the domain Archaea is false?

TLS Online TPP Program

#Question id: 11398

#Unit 9. Diversity of Life Forms

Assuming that each of these possesses a cell wall, which prokaryotes should be expected to be most strongly resistant to plasmolysis in hypertonic environments?

TLS Online TPP Program

#Question id: 11399

#Unit 9. Diversity of Life Forms

The thermoacidophile, Sulfolobus acidocaldarius lacks peptidoglycan. What is likely to be true of this species?

1. It is a bacterium.

2. It is an archaean.

3. The optimal pH of its enzymes will lie above pH 7.

4. The optimal pH of its enzymes will lie below pH 7.

5. It could inhabit certain hydrothermal springs.

6. It could inhabit alkaline hot springs.

TLS Online TPP Program

#Question id: 11400

#Unit 9. Diversity of Life Forms

What is the primary ecological role of prokaryotes?

TLS Online TPP Program

#Question id: 11401

#Unit 9. Diversity of Life Forms

In a hypothetical situation, a bacterium lives on the surface of a leaf, where it obtains nutrition from the leafʹs nonliving, waxy covering, while inhibiting the growth of

other microbes that are plant pathogens. If this bacterium gains access to the inside of a leaf, it causes a fatal disease in the plant. Once the plant dies, the bacterium

and its offspring decompose the plant. What is the correct sequence of ecological roles played by the bacterium in the situation described here? Use only those that

apply.

1.  nutrient recycler          2.  mutualist            3.  commensal              4.  parasite          5.  primary producer

TLS Online TPP Program

#Question id: 11402

#Unit 9. Diversity of Life Forms

How can prokaryotes be considered to be more successful on Earth than humans?