Slide 1

Cells Slide 2 Sample Question 1 Which of the following is an example of homeostasis found in your body? a. you eat food because it tastes good b. you shiver because you are cold c. you stay well because you take antibiotics when youre sick d. you get sick when invaded by a pathogen e. you eat more and gain weight Slide 3 Sample Question 2 What is the major difference between prokaryotes and eukaryotes? a. Prokaryotes used photosynthesis and eukaryotes dont use photosynthesis b. Prokaryotes have a nucleus and eukaryotes do not have a nucleus c. Prokaryotes do not have DNA and eukaryotes do have DNA d. Prokaryotes do not have a nucleus and eukaryotes do have a nucleus e. Prokaryotes used photosynthesis while eukaryotes use respiration Slide 4 Sample Question #3 How is osmosis different from diffusion? a. osmosis refers to the movement of ions across the membrane while diffusion is a special type of osmosis b. osmosis is a special type of diffusion involving only water c. osmosis requires energy and diffusion does not d. osmosis requires proteins and diffusion does not Slide 5 All living things have: Slide 6 Have Cells Unicellular Multicellular Slide 7 Respond to stimuli Slide 8 Maintain homeostasis Slide 9 Metabolism Autotrophs Heterotrophs Slide 10 Growth and development Growth Development Slide 11 Reproduction Sexual Asexual Slide 12 Change through time Slide 13 Methods of Maintaining Homeostasis Ectotherms reptiles, fish and amphibians Thermoregulation Slide 14 Methods of Maintaining Homeostasis Endotherms mammals and birds Thermoregulation Slide 15 Methods of Maintaining Homeostasis Water regulation (osmoregulation) Slide 16 Methods of Maintaining Homeostasis Oxygen regulation Slide 17 CELLS Prokaryotes Eukaryotes Unicellular Lack true nucleus Lack membrane-bound organelles Have single loop of DNA Have ribosomes Ex: bacteria Uni or multicellular Have a true nucleus Have a wide variety of membrane-bound organelles Have DNA in chromosomes Ex: fungi, protists, plants, animals Slide 18 Slide 19 Cell Organelles tiny structures that carry out functions necessary for the cell to stay alive Slide 20 Slide 21 Organization Slide 22 Slide 23 Structure and function are related! Slide 24 Slide 25 Slide 26 Plasma Membrane Fluid Mosaic Model Slide 27 Passive transport- NO energy Diffusion Slide 28 Passive transport- NO energy Osmosis Slide 29 Passive transport- NO energy Osmosis Slide 30 Passive transport- NO energy Facilitated Diffusion Slide 31 Active Transport requires energy Cell Membrane Pumps Slide 32 Active Transport requires energy Endocytosis Slide 33 Active Transport requires energy Exocytosis Slide 34 Transport in Cells Uses vesicles Involves the endoplasmic reticulum and golgi apparatus