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TLS Online TPP Program

#Question id: 1091

Why does testosterone, a lipid-soluble signaling molecule that crosses the membranes of all cells, affect only target cells?

#SCPH06 I Botany

  1. Only target cells retain the appropriate genes regulated by testosterone.

  2. Intracellular receptors for testosterone are present only in target cells.

  3. Only target cells possess the cytosolic enzymes that transduce the signal from testosterone to adenylyl cyclase.

  4. Only in target cells is testosterone able to initiate the phosphorylation cascade leading to activated transcription factor.

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TLS Online TPP Program

#Question id: 3641

#SCPH05 I Biotechnology

The point at which separation of the strands and synthesis of new DNA takes place is known as the:
TLS Online TPP Program

#Question id: 607

#SCPH05 I Biotechnology

In E. coli ________ is an activator and ________ is a negative allosteric modulator of the enzyme phosphofructokinase-1. 
TLS Online TPP Program

#Question id: 1400

#SCPH05 I Biotechnology

Which property is shared by malignant tumor cells and transformed cells in culture?

a. reduced growth factor requirement                        b. attachment-dependent growth

c. loss of actin microfilaments                                    d. altered morphology
TLS Online TPP Program

#Question id: 13080

#SCPH05 I Biotechnology

In RAPDs amplification will take place only of those regions of the genome that have the 
TLS Online TPP Program

#Question id: 5258

#SCPH06 I Botany

Which of the following processes are not correct for conjugation?