To this day, there is no single universal means of defining life. However, most definitions require the following conditions: the organism has metabolism, grows over time, responds to environment and changes accordingly, is composed of one or more cells, has internal homeostasis, responds to stimuli, and is able to reproduce asexually or sexually.
An organism considered dead can no longer perform life functions and does not respond to stimuli. In contrast, a living organism actively maintains homeostasis and responds to its environment to sustain life processes. The concept of an organism being "dead and alive" simultaneously does not align with biological definitions.
A physical or chemical change in an organism's environment that triggers a response is referred to as a stimulus. This stimulus can cause the organism to react in a way that helps it adapt to the changed conditions, such as by moving to a different location, changing its behavior, or adjusting its metabolic processes. For example, plants may respond to changes in light levels by altering their growth patterns.
Short answer? Good question. Long answer? Define alive. Generally, it is accepted that a living thing does seven things: 1. it is organized 2. it grows 3. it reproduces 4. it responds to stimuli 5. it takes in energy and gives off waste 6. It maintains its own internal environment 7. it adapts to its environment. Of those, viruses only do 1 and 3, and even then they only do 3 in the presence of bacteria. My answer is that no, viruses are just very complex chemicals.
The brain controls vital functions such as breathing, heart rate, and temperature regulation through the autonomic nervous system. It also regulates hormones that help maintain homeostasis in the body. The brain continuously monitors and responds to changes in the environment to keep us alive and functioning optimally.
Yes, an apple tree is alive. It is a living organism that grows, reproduces, and responds to its environment.
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To this day, there is no single universal means of defining life. However, most definitions require the following conditions: the organism has metabolism, grows over time, responds to environment and changes accordingly, is composed of one or more cells, has internal homeostasis, responds to stimuli, and is able to reproduce asexually or sexually.
Adaptation is when a change in an organisms that makes it suited to a particular environment. It responds to their environment
An organism considered dead can no longer perform life functions and does not respond to stimuli. In contrast, a living organism actively maintains homeostasis and responds to its environment to sustain life processes. The concept of an organism being "dead and alive" simultaneously does not align with biological definitions.
Biotic is the word used to define features in an environment that are alive, or were once alive. Abiotic is the opposite of biotic.
The receptor senses changes in the environment and responds by sending information to the control center along nerve impulses or chemical signals.
Dogs get very distracted when they hear something and they bark or run.
That's right. When it's cold we put on more clothes
The sensory organs detect changes in the environment and send signals to the brain. The brain processes this information and coordinates a response through the nervous system.
Actually, it is a longer list than that: It responds to the environment It adapts to the environment It grows It reproduces It eliminates waste It exchanges gases (respiration). It has a way of using nutrients for energy (metabolism). It has one or more cells It can move on its own. Even plants move a little.
One of the things that making an organism alive is its' response to stimuli. This can be internal or external.