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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?

#SCPH01 Biochemistry

  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: 1707

#I Life Science/ Life Sciences Group – I-V

The thoracic duct:
TLS Online TPP Program

#Question id: 32

#SCPH05 I Biotechnology

 Humans maintain a nearly constant level of hemoglobin by continually synthesizing and degrading it. This is an example of a(n):
TLS Online TPP Program

#Question id: 4577

#SCPH05 I Biotechnology

Which of these is a statement that Darwin would have rejected?
TLS Online TPP Program

#Question id: 684

#SCPH01 Biochemistry

Protein subunits in a multisubunit protein are held to each other primarily by
TLS Online TPP Program

#Question id: 13098

#SCPH06 I Botany

You are a scientist who is using genomics to currently study a new bacterial species that no one has ever studied before. The following sequence is a piece of DNA within the coding region of a gene that you have recently sequenced.
 
How many of the 6 potential open reading frames are actually open in this sequence shown above?