Practice Questions

TLS Online TPP Program

#Question id: 1223

The receptors for steroid hormones are located inside the cell instead of the membrane surface like most other signal receptors. How do steroids gain access to their receptors?

#Unit 4. Cell Communication and Cell Signaling

Steroid hormone receptors undergo conformational changes that relocate them on the membrane surface.
Both steroid hormones and their receptors are produced by the same cells.
Steroid hormones are lipid soluble, so they can readily diffuse through the lipid bilayer of the cell membrane.
Steroid hormones first bind to a steroid activator and this complex is transported across the cell membrane by a steroid transport protein.

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TLS Online TPP Program

#Question id: 24644

#Unit 10. Ecological Principles

Which of the following layers is the zone of eluviation or maximum leaching?

TLS Online TPP Program

#Question id: 1733

#Unit 4. Cell Communication and Cell Signaling

The early increase in phospholipase Cγ1 activity following T-cell stimulation:

TLS Online TPP Program

#Question id: 26481

#Unit 2. Cellular Organization

Which of the following are the characteristics of prokaryotic operator O1

a. Made up of 21-bp sequence

b. It has twofold/dyad symmetry

c. Recognized by two subunits of Lac repressor

d. On each O1 four unit of Lac repressor binds

TLS Online TPP Program

#Question id: 11683

#Unit 7. System Physiology – Animal

Which of the following could inhibit the initiating labor?

TLS Online TPP Program

#Question id: 10515

#Unit 6. System Physiology – Plant

Insect-derived elicitors is,