Identify the structure shown

TLS Online TPP Program

#Question id: 1388

#Unit 4. Cell Communication and Cell Signaling

When Lucifer yellow, a small dye, is injected into a neuron of the retina, neighboring neurons become rapidly labeled. If the retina is incubated in dopamine prior to Lucifer yellow injection, only the injected neuron becomes labeled. These findings suggest which of the following?

I. Neurons of the retina communicate via gap junctions.

II. Dopamine is transferred between cells via gap junctions.

III. Dopamine decreases the permeability of gap junctions.

TLS Online TPP Program

#Question id: 2706

#Unit 2. Cellular Organization

Which of the following is a function of a modified histone tail?

TLS Online TPP Program

#Question id: 6994

#Unit 5. Developmental Biology

Puberty is initiated by pulse release of _____________(hormone)

TLS Online TPP Program

#Question id: 9269

#Unit 6. System Physiology – Plant

The distribution of electrons in the excited molecule is somewhat different from the distribution in the groundstate molecule, Absorption of blue light excites the chlorophyll to a higher energy state than absorption of red light because

TLS Online TPP Program

#Question id: 31058

#Unit 4. Cell Communication and Cell Signaling

MAP kinase also phosphorylates and activates yet another kinase, termed as: