Lesson 1 Exploring Life Vocab

reproduction

• the process by which new organisms are produced.

• a method of communication among organisms.

• the way organisms adapt to their environment.

• the cycle of life stages in an organism.

Organization

• Living things are organized by having different structures that perform different functions, such as digestion or movement.

• All living things are unicellular and lack complex structures.

• Organization refers to the ability of living things to reproduce and grow.

• Living things are disorganized and do not have specific functions.

multicellular organism

• a living thing that is made up of two or more cells.

• a single-celled organism that can live independently.

• an organism that consists of only one type of cell.

• a collection of cells that do not function together.

electron microscope

• A microscope that uses light to magnify objects.

• A microscope that uses a magnetic field to focus a beam of electrons through an object or onto an object’s surface.

• A microscope that can only view living cells.

• A microscope that uses sound waves to create images.

Response to stimuli

• means that living things react to changes in their environment.

• is the ability to grow and develop over time.

• refers to the process of photosynthesis in plants.

• is a characteristic of non-living things.

light microscope

• a microscope that uses light and lenses to enlarge an image of an object.

• a device that uses electrons to magnify objects at a molecular level.

• a tool that measures the intensity of light in a given area.

• a microscope that can only be used in a dark environment.

unicellular organism

• a living thing that is made up of only one cell.

• a type of organism that consists of multiple cells.

• an organism that can only survive in water.

• a living thing that is made up of two or more cells.

Growth

• the process of increasing in size

• the act of decreasing in size

• a method of measuring height

• a type of plant disease

Internal stimuli

• stimuli that occur outside the organism. Ex: temperature, light

• stimuli that occur inside the organism. Ex: hunger, thirst

• stimuli that are perceived through the senses. Ex: sound, sight

• stimuli that are caused by external factors. Ex: noise, pollution

Characteristics of Life

• Living things are organized.

• Living things can fly.

• Living things do not need energy.

• Living things can live forever.