Practice Questions

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?

#Unit 4. Cell Communication and Cell Signaling

Only target cells retain the appropriate genes regulated by testosterone.
Intracellular receptors for testosterone are present only in target cells.
Only target cells possess the cytosolic enzymes that transduce the signal from testosterone to adenylyl cyclase.
Only in target cells is testosterone able to initiate the phosphorylation cascade leading to activated transcription factor.

More Questions

#Question id: 6942

#Unit 5. Developmental Biology

How long does embryonic development (before 1st instar larva hatches) take in this organism?

#Question id: 4931

#Unit 11. Evolution and Behavior

During course of evolution first prototroph was anoxygenic?

#Question id: 4974

#Unit 11. Evolution and Behavior

Which of these is the most likely explanation for the modern-day distribution of dicynodont fossils?

#Question id: 11129

#Unit 7. System Physiology – Animal

Which of the following statements concerning the neuronal membrane at rest is correct?

#Question id: 10310

#Unit 6. System Physiology – Plant

Which of the following enzyme in the kreb’s cycle function as an allosteric enzyme found in matrix space?