Quiz #1 1. Which level of life includes all of the other levels in the list: organisms, cells, biosphere, molecules, and ecosystems? Explain your answer. 2. Identify an Ecosystem in the area where you live? Explain why it is an Ecosystem. 3. What are genes? How are they related to DNA?

Concept 1.1 Biology explores life from the global scale to the microscopic scale. Objective Identify major organizational levels of life. Key Terms Biosphere, ecosystem, organism, cell, DNA, gene

Biosphere Ecosystem Community Population Organism Organ Systems Organs Florida coast Community All organisms on the Florida coast Population Group of brown pelicans Organism Brown pelican Organ system Nervous system Organ Brain Tissue Nervous tissue Cell Nerve cell Organelle Nucleus Molecule DNA Atom Spinal cord Nerve Ecosystem Community Population Organism Organ Systems Organs Tissue Cell Organelle DNA and Genes (Molecule) Atom

Levels of Organization (large scale) Biosphere All the part of the planet inhabited by living organisms.

Levels of Organization (large scale) Ecosystem Both living organisms and non-living or physical components of environment in a particular area

Levels of Organization (large scale) Community All interacting organisms in an area (living component only)

Levels of Organization Population Individuals of one species living in same area

Levels of Organization Organism An individual living thing

Levels of Organization (within an Individual) Organ Systems group of organs that work together in performing vital body functions excretory, nervous

Levels of Organization (within an Individual) liver Organs structure consisting of several tissues adapted as a group to perform specific functions liver, intestine

Levels of Organization (within an Individual) Tissues integrated group of cells with a common function, structure, or both Bone tissue

Levels of Organization (within an Individual) Cells- most basic unit of life. can perform all functions necessary for life. red blood cell

Levels of Organization (within an Individual) DNA - The Chemical responsible for inheritance Genes - Units of inherited information Molecules - Cluster of atoms DNA, lipid, carbohydrate

Levels of Organization (within an Individual) Atom Smallest particle of ordinary matter http://www.pearsonsuccessnet.com/snpapp/iText/products/0-13-115075-8/index.html

Homework 1. Outline and complete: Concept check 1.2 2. Kingdom Exploration Pre-Lab Dining in the trees. Shown is a female leopard and her daughter who have just killed a duiker (a small antelope). They could eat right after killing it, but then it might get stolen. Better for the mother to haul the prey up into a tree where it can be consumed without worry that a lion or hyena will steal it. If you compare a leopard to another big cat that lives in the same area in Africa, the lion. you’ll see there are important differences. Leopards are nocturnal, whereas lions are diurnal. Leopards eat a much greater variety of prey than lions. Leopards are physically much smaller than lions only about 1/3 their size, but leopards are faster. Compared to lions, leopards are solitary animals, maintaining separate non-overlapping territories. They don’t compete with each other for prey. Sensitive whiskers on its face help the cat navigate through dense veg while hunting at night. Spots provide camouflage in dry grasses of African plains, but they are also found in deserts, hill country and jungles.

Concept 1.2 Biology explores life in its diverse forms

Objectives 1. Use the term species in discussing life’s diversity. 2. Explain the basic strategy biologists use in classifying organisms. 3. Identify a characteristic that separates the domains Bacteria and Archaea from the domain Eukarya. Key Terms Species domain unicellular prokaryotic cell eukaryotic cell multicellular

Three Domains of Life taxonomy Domain branch of biology that names & classifies species Domain Highest level of taxonomic classification used by biologists Bacteria Archaea Eukarya prokaryotes

Archaea

Bacteria

In Prokaryotes, the cells do not have a nucleus

Eukarya Cells DO have nucleus Includes all organisms except prokaryotes Protista Fungi Plantae Animalia http://www.pearsonsuccessnet.com/snpapp/iText/products/0-13-115075-8/index.html

Concept 1.3 Ten themes unify the study of life

Concept 1.3 Ten themes unify the study of life Objectives Identify the 10 themes of Biology Key Terms System Photosynthesis Producer Consumer Homeostasis Adaptation Population Natural Selection Evolution 24

Ten themes unify the study of life Biological systems The cellular basis of life Form and Function Reproduction and inheritance Interaction with the environment Energy and life Regulation Adaptation and Evolution Biology and Society Scientific Inquiry 25

Biological systems (Figure 1-8) 26

The cellular basis of life (Figure 1-10) 27

Form and Function 28

Reproduction and inheritance 29

Interaction with the environment 30

Energy and life                                                                                                                                                                                                      Figure 1-15 Energy enters an ecosystem as sunlight. Plants are producers that convert light energy to chemical energy stored in food. Animals and other consumers obtain their energy in chemical form by eating. Energy exits an ecosystem as heat, which all organisms generate as they perform work. 31

Regulation 32

Adaptation and Evolution                                                                                                                                                                                                                                                                                                Figure 1-19 In this hypothetical example of natural selection, darker beetles are more likely to survive longer and reproduce, passing their genes on to more offspring. 33

Biology and Society 34

Scientific Inquiry 35

Walter Reed

A yellow fever mosquito feeding