What are the characteristics of life? For bio?

Mnemonic: Mrs Gren sells home stereos 1 - Movement- Movement is not essential to define life. Many living organisms are sessile, fixed in place or incapable of motility. Adult barnacles, fungi, and plants are sessile but are living cell-based organisms. In many their only movement is in the gametes with flagella. Movement is seen in animals that are motile and capable of some type of locomotion; amoeboid, slithering, rolling or legged locomotion with walking, swimming, hopping, climbing or flight. 2 – Reproduction -Self Replication with inheritable genetic variation whether sexual or asexual. 3 - Sensitivity – interaction with environment - Plants turn leaves to grow towards the light and turn roots to grow with gravity. Mimosa trees close their leaves at a touch. Animals have senses and many have a neural system that can integrate sensory signals. 4 - Growth & regulated development- the acorn produces the mature oak. 5 - Respiration - cellular respiration. All plants, animals and fungi have mitochondria for cellular respiration while bacteria have membrane folds for this function. 6 –Excretion - Regulated movement across the cell membrane - secretion/excretion of waste, - plants release waste gases and secrete waste materials in the either their heart wood or in the leaves they renew annually. Plants also secrete nectar, latex, waxes, and resins. Animals excrete sweat, toxins, urine, feces etc. 7- Nutrition-– some mode of acquiring organic carbon for metabolic energy. Autotrophs -plants. algae, cyanobacteria, methanogens etc. Heterotrophs - fungi, protozoa, animals, etc. 8- Cell(s)- The basic unit of all living organisms is the membrane bound cell. Boundaries are an essential part of life; they mark the farthest reach of internal regulation and sensory proprioception (sense of self and limb orientation). 9- Homeostasis - controlled, balanced internal environment within the cell's membrane or the organism's skin/exoskeleton/cuticle... Mammals & birds are homeotherms with regulated body temperatures. Plants regulate their internal water movements with osmosis through roots/stems/ leaves while mammals use kidneys.

The 7 Characteristics of Life: 1. Living Things are Composed of Cells: Single-cell organisms have everything they need to be self-sufficient. In multicellular organisms, specialization increases until some cells do only certain things. 2. Living Things Have Different Levels of Organization: Both molecular and cellular organization. Living things must be able to organize simple substances into complex ones. Living things organize cells at several levels: Tissue - a group of cells that perform a common function. Organ - a group of tissues that perform a common function. Organ system - a group of organs that perform a common function. Organism - any complete living thing. 3. Living Things Use Energy: Living things take in energy and use it for maintenance and growth. 4. Living Things Respond To Their Environment: Living things will make changes in response to a stimulus in their environment. A behavior is a complex set of responses. 5. Living Things Grow: Cell division - the orderly formation of new cells. Cell enlargement - the increase in size of a cell. Cells grow to a certain size and then divide. An organism gets larger as the number of its cells increases. 6. Living Things Reproduce: Reproduction is not essential for the survival of individual organisms, but must occur for a species to survive. All living things reproduce in one of the following ways: Asexual repoduction - Producing offspring without the use of gametes. Sexual reproduction - Producing offspring by the joining of sex cells. 7. Living Things Adapt To Their Environment: .

1. It reproduces. 2. It changes over time/evolves. 3. It uses digital information in the form of a genetic code. 4. It uses an energy source and gives off waste. 5. It responds to stimuli. 6. It grows. Some things like viruses have some of the characteristics of life but not all so are on the borderline between life and non life.

1. It reproduces. 2. It changes over time/evolves. 3. It uses digital information in the form of a genetic code. 4. It uses an energy source and gives off waste. 5. It responds to stimuli. 6. It grows. Some things like viruses have some of the characteristics of life but not all so are on the borderline between life and non life.

The 7 Characteristics of Life: 1. Living Things are Composed of Cells: Single-cell organisms have everything they need to be self-sufficient. In multicellular organisms, specialization increases until some cells do only certain things. 2. Living Things Have Different Levels of Organization: Both molecular and cellular organization. Living things must be able to organize simple substances into complex ones. Living things organize cells at several levels: Tissue - a group of cells that perform a common function. Organ - a group of tissues that perform a common function. Organ system - a group of organs that perform a common function. Organism - any complete living thing. 3. Living Things Use Energy: Living things take in energy and use it for maintenance and growth. 4. Living Things Respond To Their Environment: Living things will make changes in response to a stimulus in their environment. A behavior is a complex set of responses. 5. Living Things Grow: Cell division - the orderly formation of new cells. Cell enlargement - the increase in size of a cell. Cells grow to a certain size and then divide. An organism gets larger as the number of its cells increases. 6. Living Things Reproduce: Reproduction is not essential for the survival of individual organisms, but must occur for a species to survive. All living things reproduce in one of the following ways: Asexual repoduction - Producing offspring without the use of gametes. Sexual reproduction - Producing offspring by the joining of sex cells. 7. Living Things Adapt To Their Environment: .

Since there is no unequivocal definition of lifestyles, the current figuring out is descriptive, where existence is a 'attribute' of organisms that exhibit all or many of the following phenomena 1. Homeostasis: regulation of the interior atmosphere to preserve a regular state; for example, electrolyte concentration or sweating to minimize temperature. 2. Organization: Being structurally composed of one or more cells, which are the fundamental units of lifestyles. Three. Metabolism: Transformation of power through changing chemical substances and energy into cell add-ons (anabolism) and decomposing natural and organic subject (catabolism). Living matters require energy to preserve inside institution (homeostasis) and to provide the other phenomena associated with existence. Four. Development: upkeep of a higher price of anabolism than catabolism. A growing organism increases in dimension in all of its parts, as an alternative than effectively collecting subject. 5. Adaptation: The potential to alter over a interval of time based on the environment. This potential is main to the system of evolution and relies on the organism's heredity as good because the composition of metabolized resources, and external reasons present. 6. Response to stimuli: A response can take many types, from the contraction of a unicellular organism to external chemical compounds, to difficult reactions involving all of the senses of multicellular organisms. A response is most commonly expressed by motion, for example, the leaves of a plant turning toward the sun (phototropism) and by means of chemotaxis. 7. Replica: The capacity to provide new man or woman organisms, either asexually from a single father or mother organism, or sexually from two dad or mum organisms.