List And Describe The Characteristics Of Life – Characteristics of Life Part 1-2. Objectives  List six characteristics of life (Grouch)  Explain how an organism is organized.

Presentation on theme: “Characteristics of Life Part 1-2. Objectives  List six characteristics of life (Grouch)  Explain how living matter is organized.” – Presentation Transcript:

List And Describe The Characteristics Of Life

3 What is the meaning of life?  All living things share certain characteristics that characterize all living things.  Growth  Reproduction  Organization  Energy utilization  Cells  Homeostasis

The Six Biological Kingdoms

4 Growth All living things grow Living things grow by adding more material to what is made by cell growth and cell division (2 new cells from 1 existing cell) Growth – Repeated cell division and cell differentiation produced Example – 1 fertilized egg divides into 50 trillion cells to become an adult!

5 Reproduction All species of organisms Reproduction Reproduction is necessary for the survival of the species, but only one organism divides to make two copies (asexual) Sexual reproduction The genetic information of two organisms combine to produce unique offspring.

6 Organization Organisms are highly organized They take materials from the environment and organize them Specialized structures in cells perform specialized functions Cells in multicellular organisms are grouped according to their function.

7 Use Energy All organisms use energy Metabolism = sum of all chemical processes occurring in organisms that require energy: reproduction to maintain molecular and cellular organization.

Growth Mindset: Definition, Characteristics, And Examples

8 Cells All organisms are made of cells Cells are the basic unit of life Cells are always small Large organisms = more cells (not large cells) Cells test humans Euglena

9 Homeostasis HOmie-oh-STAY-sis All organisms maintain a stable internal state Cells can regulate their water content Multicellular can control: Temperature Oxygen / carbon dioxide Blood pH (acidity or alkalinity) Water content (plants) Water Sweat with cooling!

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To operate this website, we log user data and share it with processors. To use this website, you must accept our privacy policy, including our cookie policy. Biology is the science that studies life, but what exactly is life? It may seem like a silly question with an obvious answer, but life isn’t always easy to explain. For example, the branch of biology known as virology studies viruses, which exhibit some characteristics of living organisms but lack others. It turns out that while viruses can invade organisms, cause disease, and reproduce, they don’t meet the criteria biologists use to define life. Consequently, virologists are not biologists, strictly speaking. Similarly, some biologists study the evolution of the early molecules that gave rise to life; Because pre-life events are not biological events, these scientists are excluded from biology in the strict sense of the word.

Solution: Cie Igcse Biology Ch1 Characteristics And Classification Of Living Organisms

From its earliest beginnings, biology has wrestled with these questions: What are the shared characteristics that make something “alive”? And when we know that something is alive, how can we find a meaningful level of organization in its structure?

All organisms share several important characteristics or functions: adaptation to environment, sensitivity or response, reproduction, growth and development, regulation, homeostasis, and energy processing. When viewed together, these characteristics define life.

An organism is an organized and organized structure consisting of one or more cells. Even the simplest unicellular organisms are highly complex: inside each cell, atoms form molecules; It contains organelles and other cellular components.

In multicellular organisms (Figure 1), the same cells form tissues. Tissues work together to form organs (body structures with different functions). Organs work together to form organ systems.

The Pyramid Of Life

Organisms respond to different stimuli. For example, plants can turn to light sources, climb walls and ceilings, or respond to touch (Figure 2).

) hangs immediately and is drawn when drawn. After a few minutes, the plant returns to normal. (Courtesy: Alex Lomas)

) movement toward the stimulus is considered a positive response, while movement away from the stimulus is considered a negative response.

Watch this video to see how plants respond to stimuli—from opening to light, to wrapping a bag around a bag, to catching prey.

Solved: What Are The Three Domains Of Life? What Two Domains Comprise Prokaryotes? What Domain Comprises Eukaryotes? List Three Features That All Prokaryotes Share That Make Them Unique From Eukaryotes. Although Useful,

Unicellular organisms reproduce by first copying their DNA and then dividing it in parallel, when a cell is ready to divide to make two new cells. Multicellular organisms usually produce specialized reproductive germ cells that form new individuals. When a species reproduces, the genes that make up the DNA are passed on to the organism’s offspring. These genes ensure that the offspring belong to the same species and have similar characteristics such as size and shape.

Figure 3. Although no two are alike, these dogs inherit genes from both parents and share similar characteristics.

Organisms grow and develop according to specific instructions encoded in their genes. These genes provide instructions that direct cellular growth and development, ensuring that the species’ offspring (Figure 3) exhibit many of the same characteristics as their parents.

Even small organisms are complex and require multiple regulatory mechanisms to coordinate internal functions, respond to stimuli, and cope with environmental stresses. Two examples of regulated internal functions in organisms are nutrient transport and blood flow. Organs (groups of tissues that work together) perform specialized functions, such as transporting oxygen throughout the body, removing waste, delivering nutrients to each cell, and cooling the body.

Characteristics Of Service: Intangibility, Inseparability, Variability, Perishability

) and other mammals living in snow-covered areas maintain their body temperature by generating heat and reducing heat loss through thick fur and thick layers under their skin. (Credit: “longhorndave”/Flickr)

To function properly, cells need the right conditions, such as the right temperature, pH, and the right concentration of various chemicals. However, this situation can change from one moment to another. Through homeostasis (literally, “steady state”) – the ability of an organism to maintain a stable internal state, an organism can maintain a constant internal state within a narrow range, despite environmental changes. For example, organisms need to regulate body temperature through a process called thermoregulation. Animals that live in cold climates, such as polar bears (Figure 4), have body structures that help them withstand low temperatures and conserve body heat. Structures that help with this type of insulation include wool, wool, tallow, and fat. In hot climates, organisms have mechanisms (sweating in humans or panting in dogs) that help them get rid of excess body heat.

All organisms use energy resources for their metabolic activities. Some organisms take energy from the sun and convert it into chemical energy in food (photosynthesis); Others use chemical energy in the molecules they take in as food (cellular respiration).

) uses chemical energy obtained from food to conduct electricity. The California skeleton is an endangered species. These birds have wing tags that help biologists identify an individual.

Characteristics Of Life Poster Guidelines

Organisms that follow a testable hierarchy from smallest to largest are highly organized and orderly. An atom is the smallest and most basic unit of matter. It consists of a nucleus surrounded by electrons. Atoms form molecules. A molecule is a chemical structure consisting of at least two atoms held together by one or more chemical bonds. Many biologically important molecules are macromolecules, large molecules usually made by polymerization (polymers are large molecules made up of smaller units called monomers, which are simpler than macromolecules). . An example of a macromolecule is deoxyribonucleic acid (DNA) (Figure 6), which contains the instructions for the structure and function of all living organisms.

Some cells contain aggregates of macromolecules surrounded by a membrane. They are called organs. Organelles are small structures found in cells. Examples of organelles include mitochondria and chloroplasts, which perform important functions: mitochondria produce energy to move cells, while chloroplasts allow green plants to use energy from sunlight. All living things are made of cells; A cell is the smallest basic unit of structure and function of living organisms. (This is why viruses are not considered living: they are not made of cells. To make new viruses, they must attack and disrupt the production machinery of living cells; only then can they obtain the material they need to reproduce.) Some organisms are unicellular and others are multicellular. Cells are classified as prokaryotic or eukaryotic. Prokaryotes are single-celled or single-celled organisms that lack a nucleus or membrane-bound organelles; In contrast, eukaryotic cells have membrane-bound organelles and a membrane-bound nucleus.

In larger organisms, cells join together to form tissues, which are groups of similar cells that perform similar or related functions. An organ is a collection of tissues that work together to perform a common function. Organs are found not only in animals but also in plants. An organ system is a higher level organization made up of functionally related organs. Mammals have many organ systems. For example, the circulatory system moves blood through the body and out of the lungs. It contains organs like the heart

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