Definition. 1 / 10. 1)Acquire and use materials and energy. 2)Actively maintain organized complexity. 3)Perceive and respond to stimuli.
What is a life in biology?
Life is defined as any system capable of performing functions such as eating, metabolizing, excreting, breathing, moving, growing, reproducing, and responding to external stimuli.
What is life in biology short answer?
Life is a unique, complex organisation of molecules expressing itself through chemical reactions which lead to growth, development, responsiveness, adaptation and reproduction.
What is life biology summary?
Biology is the science of life. All living organisms share several key properties such as order, sensitivity or response to stimuli, reproduction, adaptation, growth and development, regulation, homeostasis, and energy processing.
What is the smallest unit of life?
- The cell is the smallest unit of life that can divide, multiply, grow and respond to stimuli from the environment.
- Almost all cells, except primitive cells such as bacteria and viruses, are composed of two parts: cytoplasm and nucleus.
- basic plasma (cytosol, colloidal structure)
Which of the following is not a characteristic of life?
The choice that is not a characteristic of life is C) composed of atoms. All matter is composed of atoms, including every solid, liquid, gas and plasma that exists. This includes many different types of non-living substances, such as rocks, water, and air.
What is the real meaning of life?
Experiencing reality by interacting authentically with the environment and with others. Giving something back to the world through creativity and self-expression, and, Changing our attitude when faced with a situation or circumstance that we cannot change.
What is the medical definition of life?
(līf), 1. Vitality, the essential condition of being alive; the state of existence characterized by such functions as metabolism, growth, reproduction, adaptation, and response to stimuli.
What are the characteristics of life in biology?
Big Ideas: All living things have certain traits in common: Cellular organization, the ability to reproduce, growth & development, energy use, homeostasis, response to their environment, and the ability to adapt.
What is the basic of life?
Cells are called as the basic unit of life because all the living organisms are made up of cells and also all the functions taking place inside the body of organisms are performed by cells. Cells provide the specific conditions, for the occurrence of the metabolic reactions.
What is life one word?
the animate existence or period of animate existence of an individual: to risk one’s life; a short life and a merry one. a corresponding state, existence, or principle of existence conceived of as belonging to the soul: eternal life.
What is the life process?
The basic processes of life include organization, metabolism, responsiveness, movements, and reproduction. In humans, who represent the most complex form of life, there are additional requirements such as growth, differentiation, respiration, digestion, and excretion. All of these processes are interrelated.
What are the 5 characteristics of life?
- Homeostasis = The maintenance of a relatively stable internal environment.
- Reproduction = The ability to form a new offspring.
- Metabolism = The ability to obtain and use. energy for growth and movement.
- DNA/Heredity = Genetic material that is passed on during reproduction.
What are the 8 characteristics of life?
All living organisms share several key characteristics or functions: order, sensitivity or response to the environment, reproduction, growth and development, regulation, homeostasis, and energy processing. When viewed together, these eight characteristics serve to define life. Figure 1.7.
What is the best definition of biology?
bi·ol·o·gy bī-ˈä-lə-jē : a branch of knowledge that deals with living organisms and vital processes. advances in the field of biology. a biology textbook. : the plant and animal life of a region or environment.
What is the study of cells called?
Cell biology is the study of cell structure and function, and it revolves around the concept that the cell is the fundamental unit of life. Focusing on the cell permits a detailed understanding of the tissues and organisms that cells compose.
Where do all cells come from?
All cells come from pre-existing cells by cell division. Schwann also proposed “Free Cell Formation” or spontaneous generation of cells — this was before Pasteur’s definitive experiments. Modern Cell Theory Also States: Life’s chemical processes, such as metabolism, occur inside of cells.
What keeps an organism alive?
All living organisms share several key characteristics or functions: order, sensitivity or response to the environment, reproduction, adaptation, growth and development, homeostasis, energy processing, and evolution. When viewed together, these characteristics serve to define life.
Can all living things reproduce?
All living things are capable of reproduction. Reproduction is the process by which living things give rise to offspring. Reproduction may be as simple as a single ce ll dividing into two cells.
Is sperm a living thing?
Yes, it is a mobile carbon-based lifeform. It is a living organism itself, speaking of the sperm of course. The egg, or Ovum is basically part of the female reproductive system, and is not so much a living entity, but part of a living entity.
Do all living things need oxygen?
Almost all living things need oxygen. They use this oxygen during the process of creating energy in living cells. Just as water moves from the sky to the earth and back in the hydrologic cycle, oxygen is also cycled through the environment. Plants mark the beginning of the oxygen cycle.
What is the ultimate meaning of life?
Ultimately, it is the temporary nature of human life that gives it shape and purpose. Within a limited timeframe, one might say the meaning of life is to live life meaningfully.
What is life and its purpose?
Your life purpose consists of the central motivating aims of your life—the reasons you get up in the morning. Purpose can guide life decisions, influence behavior, shape goals, offer a sense of direction, and create meaning. For some people, purpose is connected to vocation—meaningful, satisfying work.
Is there a meaning to life?
“Life has no meaning. Each of us has meaning and we bring it to life. It is a waste to be asking the question when you are the answer.” As you can probably imagine, philosophers have spent countless hours considering the concept of meaning, as well as the “meaning of meaning.”
What are the 3 meanings of life?
The three meanings of meaning in life: Distinguishing coherence, purpose, and significance.