21. Living things are made of cells These units help to organize their materials.
3Examples of Cells Nerve cell Egg and sperm Red blood cell Fat cell Cheek cell
42. Living things reproduce Why is this so important?How do plants reproduce?How do animals reproduce?Egg and spermpollenEuglena separate
5Types of Reproduction Sexual Reproduction Two parents unite to form a new organismAsexual ReproductionA single parent divides itself two produce offspring
63. Living things are based on a universal genetic code (DNA). All living things have the same bases (A, T, C, G) in their DNA-they are just in different order
74. Living things grow and develop Each organism has a pattern of growth and development characteristic of its species.
85. Living things obtain and use materials and energy Organisms take in energy and transform it to perform all of life’s activities.-metabolism-photosynthesis
9Metabolism= Combination of chemical reactions through which an organism builds up or breaks down materials.
106. Living Things Respond to Their Environment Eye spot (responds to light)All organisms respond to environmental stimuli.Nikon MicroscopyU Movie Gallery: Paramecium (Protozoan) Video No. 3
11Stimulus-ResponseA stimulus is a signal to which an organism responds.
127. Living Things Maintain a Stable Internal Environment The environment outside an organism may change, but regulatory mechanisms maintain an organisms’ internal environments within limits that sustain life.HowStuffWorks "Homeostasis"