TLS Online TPP Program

#Question id: 4337


Which of the following conditions is most likely to cause the lactose operon to be transcribed?

#Section 3: Genetics, Cellular and Molecular Biology
  1. There is more glucose in the cell than lactose.

  2. There is glucose but no lactose in the cell.

  3. The cyclic AMP and lactose levels are both high within the cell.

  4. The cAMP level is high and the lactose level is low.

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TLS Online TPP Program

#Question id: 2508

#Section 3: Genetics, Cellular and Molecular Biology

If you treated cells with a drug that interferes with microtubules, such as colchicine, which of the following would result?

A. Cell shape would be disrupted.

B. Mitosis and meiosis would not occur.

C. The intracellular location of organelles would be disrupted.

TLS Online TPP Program

#Question id: 2509

#Section 3: Genetics, Cellular and Molecular Biology

Which of the molecular motor proteins is associated with microtubules?

TLS Online TPP Program

#Question id: 2510

#Section 3: Genetics, Cellular and Molecular Biology

Which of the following cytoskeletal components is not found in all eukaryotic cells?

TLS Online TPP Program

#Question id: 2527

#Section 3: Genetics, Cellular and Molecular Biology

Transpirational water flow in the xylem requires a mechanically strong wall that resists from,

TLS Online TPP Program

#Question id: 2531

#Section 3: Genetics, Cellular and Molecular Biology

The specific linkages between sugar rings, including the specific carbons that are linked together and the configuration of the linkage, are important for the properties of the polysaccharide;

 I) Amylose                             a)β(1,3)-linkages                                  

 II) Cellulose                            b) β (1,4)-linkages

  III) Callose                             c) α(1,4)-linked

                                                 d) α (1,3)-linkages

Which of the following linkage combination is correct linkages of the polysaccharides?

TLS Online TPP Program

#Question id: 2539

#Section 3: Genetics, Cellular and Molecular Biology

Which structure is common to plant and animal cells?