Question

A human pancreatic cell obtains O2 Fuel molecules such as glucose and building material such as amino acids and cholesterol from its environment and releases CO2 as a waste product of cellular respiration. In response to hormonal signals the cell secrets digestive enzymes. It also regulates its ion concentration‘s by X changing with its environment. Based on what you have just learned about the structure and function of cellular membranes write a short essay that describes how such a cell accomplishes these interactions with its environment

Answer 1

Answer:

Cells Can Respond to Changes in Their Environments. Chemicals that could move through cells, either through diffusion through the cell membrane or by the action of transport proteins, and could bind directly to proteins within the cell and modulate their activities.

Explanation:

Cells Can Respond to Changes in Their Environments -:The environments in which cells grow are often rapidly changing. Cells, for instance, can consume all of a certain food source and must use others. Cells have developed strategies for adapting their biochemistry to function in a changing world in response to signals suggesting environmental change. The modifications can take many forms, including changes in the activities of pre-existing enzyme molecules, changes in the synthesis rates of new enzyme molecules, and changes in the processes of membrane transport.

To form colonies with specialized functions, some cells may interact -: Early organisms lived exclusively as single cells. Such organisms interacted with one another only indirectly by competing for resources in their environments. However, some of these species have evolved the capacity to construct colonies that involve several interacting cells. In such classes, the presence of surrounding cells, which may be in direct contact with one another, dominates the environment of a cell. These cells communicate with one another by a variety of signaling mechanisms and may respond to signals by altering enzyme activity or levels of gene expression. Cell differentiation can be one result; differentiated cells are genetically similar but have distinct properties because they express their genes differently.

As individual single cells, some modern organisms will turn back and forth from existence to existence as multicellular colonies of differentiated cells. One of the best described is the slime mold Dictyostelium. In suitable environments, this organism lives as individual cells; under conditions of starvation, however, the cells come together to form a cell aggregate.  The cells expand, replicate and live as individual cells when they arrive in a well-stocked location until the food supply is again depleted. This aggregate will migrate as a unit to a potentially more favorable environment, often called a slug, where it then forms a multicellular structure , called a fruiting body, which rises significantly above the surface on which the cells are developing.   Wind will move cells released from the top of the fruiting body to places where the supply of food is more abundant.

Hence, the answer is given about the cell interaction with its environment.