Characteristics of Living Things Biology Objectives Be able

Characteristics of Living Things Biology

Objectives � Be able to determine whether something is a living thing or a nonliving thing. � Learn and understand the 8 main characteristics of living things.

so. . . what IS Biology? ? �BIO- = LIVING �-OLOGY = STUDY OF � BUT WHAT IS THE DIFFERENCE BETWEEN LIVING & NONLIVING? � SCIENTISTS HAVE NOT BEEN ABLE TO AGREE ON A SINGLE DEFINITION THAT CHARACTERIZES LIFE!!!

LIVING VS. NON-LIVING: (ORGANIC VS. INORGANIC) �Living things: carry out almost all of the LIFE FUNCTIONS � Nutrition, transport, respiration, excretion, regulation, synthesis, growth, reproduction, metabolism, immunity, locomotion, �Non-living things: cannot carry out at least one or more of these functions

Characteristics of Living Things: 1. Cells n n The first characteristic of living things is that they are all composed of cells. Cells are the small pieces that make up all living things.

Characteristics of Living Things: 1. Cells 2. Based on genetic code (DNA) DNA RNA PROTEIN CELL PARTS

Characteristics of Living Things: 1. Cells 2. Based on genetic code (DNA) 3. Living things use energy Animals and humans eat food to obtain their energy. Plants however use the sunlight to obtain their energy.

Characteristics of Living Things: 1. Cells 2. Based on genetic code (DNA) 3. Use energy 4. Homeostasis n n This is maintaining the inside of their bodies. Eating the right foods and staying clean are parts of this maintaining process.

Characteristics of Living Things: 1. Cells 2. Based on genetic code (DNA) 3. Use energy 4. Homeostasis 5. Grow and develop

Characteristics of Living Things: 1. Cells 2. Based on genetic code (DNA) 3. Use energy 4. Homeostasis 5. Grow and develop 6. Populations change over time

Characteristics of Living Things: 1. Cells 2. Based on genetic code (DNA) 3. Use energy 4. Homeostasis 5. Grow and develop 6. Populations change over time 7. Response to environment Influencing Factor Color Change Emotional State - Anger - Excitement or Fear Skin becomes darker Skin becomes paler and gets yellow spots Sunlight - Bright light - No light (darkness) Cells become dark, nearly black Skin becomes creamish with yellow spots Temperature - High (without sunlight) - Low Skin turns green Skin turns pale green

Characteristics of Living Things: 1. Cells 2. Based on genetic code (DNA) 3. Use energy 4. Homeostasis 5. Grow and develop 6. Populations change over time 7. Response to environment 8. Reproduction n All living things need to reproduce to survive.

Characteristics of Living Things: 6. 7. Populations change over time Response to environment 8. Reproduction 2 Types of Reproduction: �Sexual: cells from 2 parents unite to produce a new organism �Asexual: a single parent produces offspring identical to itself

Characteristics of Living Things: 1. 2. 3. 4. 5. 6. 7. 8. Cells Based on genetic code (DNA) Use energy Homeostasis Grow and develop Populations change over time Response to environment Reproduction 2 Types: � Sexual � Asexual

Living or Non-living and Why? Living Non-Living

Living or Non-living and Why? Living! Once living/Dead Non-living Non-Living

One-Minute Summary Write: � 2 things you learned � 1 question you have

Living at Ayala Activity Directions: � Fold Living your paper in ½ � Title one side Living � Title the other side Nonliving � Find 5 living things and draw them � Find 5 non-living things and draw them � Label: � Give Nonliving (L) or non-living (NL) or dead (D) 2 reasons why each is living or non-living