Presentation on theme: "What are the 7 characteristics of life and give an example of an animal, plant, bacteria, or other living thing using these traits. All living things have."— Presentation transcript:
What are the 7 characteristics of life and give an example of an animal, plant, bacteria, or other living thing using these traits. All living things have cells/contain DNA Ex: a dog has cells that can be viewed under a microscope All living things respond to stimuli Ex: dog wagging tail or scratching ears All living things maintain homeostasis Ex: dog’s average temperature needs to stay between 100-102 o F All living things need metabolism Ex: dogs eat dog food in order to get nutrients All living things grow and develop Ex: dogs grow from a puppy to adult All living things are able to reproduce Ex: dogs can birth a litter of puppies All living things evolve Ex: dog’s show common ancestors with other animals
What are the three domains of life? Archaea Bacteria Eukarya What does it mean if something is a theory? It is a highly tested experiment that the results can be replicated by many scientists and is generally accepted in science. What are the steps to the scientific method? Observation question form a hypothesis test with experiment data and analysis conclusion theory
What is the organization from cells organism? Cells tissue organ organ system Organism What is the definition of ecology? The study of relationships and interactions of organisms in their ecosystem and environment What is a hypothesis? What can it lead to? A hypothesis is an educated guess that can be tested and be supported or rejected. It can lead to a theory How can you tell if an experiment is controlled or not? In order for an experiment to be controlled you need a control group and an experimental group. The control group stays the same, the results are known, and you use this to compare your results to the experimental group. The experimental group is the changing group where one variable has been altered.
What type of graph/chart is best used to show percentages of a whole? Circle graph/Pie Chart When should you use a bar graph? A bar graph is best used when comparing data with other numbers or categories. When should you use a line graph? A line graph is best used when plotting data over a period of time. Explain the differences between the independent and dependent variable. An independent variable is what is being tested. A dependent variable is the results or response to the experiment. What are the three important parts of a graph that should always be included? Title you graph Label your axis Set your intervals or plot your data
What are the three types of microscopes talked about in class? Light Microscope (used in class) Transmission Electron Microscope (TEM) Scanning Electron Microscope (SEM) How do you calculate magnification? To calculate magnification you need to multiply to ocular lens by the objective lens. Ex: an ocular lens of 10x and an objective lens of 40x will give you a magnification of 400x.
Walk through the steps of focusing a specimen from scanning power to high power. Include parts of the microscope including which adjustments knob and magnification. To start you place your slide on the stage using the stage clips. Make sure your objective lens is in scanning power (4x) and use the coarse adjustment knob to put the specimen in focus. The magnification is 40x. Then, move your objective lens to low power (10x) and use the fine adjustment knob to sharpen the image. The magnification is 100x. Finally, move the objective lens to high power (40x) and use the fine adjustment knob to sharpen the image. The magnification is 400x. What are the differences between coarse adjustment and fine adjustment knobs? The coarse adjustment knobs is used when in scanning or low power and is used to focus in on a specimen. This knob is the larger of the two. The fine adjustment knob is used when in high power only and is used to sharpen the specimen. This is the smaller of the two knobs. How do you properly hold a microscope? To properly hold a microscope, you need to hold it by the arm and have you other hand under the base of the microscope.