Question

-Explain the importance of
cells and chemistry and their role in human life.
-Reflect on the information you have
reviewed and consider the importance of the topics in relation to homeostasis and every-day
body functioning.

Answer 1

I have already started this essay but i need help explaining better

Answer 2

Living VS. Non-Living
Complex organisms, such as humans, require many systems for their life processes. Less complex living things may lack the complex systems of more complex organisms, but they still carry on the basic life activities. While non-living things may carry on some of these life processes, they do not carry on all of them, or these activities do not interact in a manner allowing the non-living thing to reproduce itself.
Living things carry out almost all the life processes or activities. These life processes include digestion, respiration, circulation, excretion, locomotion, immunity, coordination, and synthesis. Non-living things are incapable of carrying out at least one or more of the life processes. The sum of the energy used in all the life processes represents the metabolism of the organism.

Homeostasis
The ability to carry on the life processes allow a living thing to maintain dynamic equilibrium or homeostasis with their surroundings. Homeostasis is a state of balance or steady state between a living thing and its environment. Homeostasis in an organism is constantly threatened. Failure to respond effectively to a failure of homeostasis can result in disease or death.

The components of living things in humans and other organisms, from organ systems to cell organelles, interact to maintain a balanced internal environment. This balanced internal environment is called dynamic equilibrium or homeostasis. To successfully accomplish this, organisms possess many control mechanisms that detect internal changes and correct them to restore the internal balance of the organism. If an organism fails to maintain homeostasis, this may result in disease or death. Non-living things possess few control mechanisms to maintain homeostasis.

Organizational Levels
Important levels of organization for structure and function of living things include cells, tissues, organs, organ systems, and whole organisms. The organs and systems of the body help to provide all the cells with their basic needs to carry on the life functions. The cells of the body are of different kinds and are grouped in ways that help their function.

All living things are composed of one or more cells, each capable of carrying out the life functions. The organelles present in single-celled organisms often act in the same manner as the tissues and systems found in many celled organisms. Single-celled organisms perform all of the life processes needed to maintain homeostasis, by using specialized cell organelles.

Living things have different levels of organization. The simplest level of organization is that of the cell. A group of cells with a similar function is called a tissue. Groups of tissues working together to perform a common function are called organs. An example of this would include the nervous, muscle, and other tissues which make up the heart. Groups of organs working together to perform a common function are referred to as a system or organ system. The blood vessels, blood, and the heart are organs which work together to form the circulatory system. Many different systems function together to allow a complex organism to function.

Cell Structure
Cells have particular structures or organelles that perform specific jobs. These structures perform the life activities within the cell. Just as body systems are coordinated and work together in complex organisms, the cells making up those systems must also be coordinated and organized in a cooperative manner so they can function efficiently together.

Inside the cell a variety of cell organelles, formed from many different molecules, carry out the transport of materials, energy capture and release, protein building, waste disposal, and information storage. Each cell is covered by a membrane that performs a number of important functions for the cell as well.

Cell Theory
All organisms contain one or more cells which are capable of carrying on the life activities needed by the organism. This idea is often referred to as the cell theory.

Answer 3

wayy to goo._.