Cell Signalling and Transduction
A cell is known to respond to a particular signaling molecule. Which of the following must be true of this cell?

It is also the site of production for the signaling molecule
It is incapable of signal transduction
It is in the heart muscle
It contains the receptor for the signaling molecule

ANSWER DOWNLOAD EXAMIANS APP

Cell Signalling and Transduction
Cell signaling can be classified into

None of these
two distinct types based on the distance over which the signaling molecules act
three distinct types based on the distance over which the signaling molecules act
three distinct types based on the signaling molecules

ANSWER DOWNLOAD EXAMIANS APP

Cell Signalling and Transduction
Two key organizing principles for large multicellular organisms are

simple nerve reflexes and cell specialization
cell specialization and communication between cells
prokaryotic cell structure and cell specialization
communication between cells and simple nerve reflexes

ANSWER DOWNLOAD EXAMIANS APP

Cell Signalling and Transduction
Why is it that inhaling nitric oxide reduces blood pressure only in the lung tissue and not elsewhere in the body*?

Because nitric oxide cannot cross cell membranes and enter the blood
Because other body tissues use a different signaling molecule
None of these
Because nitric oxide breaks down quickly and thus cannot travel far

ANSWER DOWNLOAD EXAMIANS APP