Actions of hormones in their target organs are mediated by different mechanisms. For each of the following hormones, choose the most likely mechanism.

Each option may be chosen once, more than once, or not at all.

Since the cell membrane is virtually impermeable to lipid-insoluble substances, those substances, as molecules or ions, require transport proteins to be transported across the cell membrane. Consequently, transport proteins are strategically distributed in the cell membrane according to the respective specific functional requirements. 

In which cell and at which location of the cell is the following transport protein located?

Each option may be chosen once, more than once, or not at all.

Optimal cell function is necessary for human well-being and its derangement can lead to diseases. Cell function, in turn , depend on the functions of its organelles.

Which organelle is specialized for the following function?

The organization of the nervous system can be described in different ways to explain the structure and function of it, and how it maintains homeostasis. Which division of the nervous system controls each of the following processes?

Each option may be chosen once, more than once, or not at all.

Cell membrane proteins have multiple functions which are important for the cell as well as the whole body, and they are named according to their functions. Choose the appropriate function for each of the cell membrane proteins below?

During an electrophysiological experiment on a neuron, electrical responses are observed and recorded. Which of the following events are responsible for the each of the following changes in the neuronal membrane.

Choose from the options listed. Each option may be chosen once, more than once or not at all.

Which component of a reflex arc have the function provided in the drop-down list next to it.

Each option may be chosen once, more than once, or not at all.

The activity of a cell depends on the activity of organelles contained in it. The activity of organelles, in turn, depend on the activity of their enzymes. If these enzymes are deficient or ineffective, the cell function can be adversely affected. 

In which organelle of a cell are the following enzymes located?

Each option may be chosen once, more than once, or not at all.

Functions of a cell as well as a human body depend on the activity of the membrane transporters, functional deterioration of these transporters can lead to diseases. In these cases, drugs are given to stimulate or inhibit these transporters.

Membrane transporters are classified depending on how they transport substances, number of substances transported and direction of transport.

Which category do the following membrane transporters belong to?

Each option may be chosen once, more than once, or not at all.

Which protein is responsible for each of the following functions in excitable tissues? 

The proteins may be chosen once, more than once or not at all.