Levels of Organization, Characteristics of Life & Scientific Investigation

Match the word with its definition tissue group of similar cells that perform the same function organ system a group of organs that work together performing major functions organ a body structure composed of different kinds of tissues that work together cell the basic unit of structure and function in living things (the basic unit of life) What is the correct order for this example of levels of organization? cell → circulatory system → heart → heart tissue cell → heart tissue → heart → circulatory system circulatory system → cell → heart → heart tissue heart → cell → circulatory system → heart tissue Characteristics of Life In order to be considered a living thing, an organism must dohave the following 7 things:1. Cellular Organization2. Metabolism3. Maintain Homeostasis4. Reproduce5. Responsiveness to the environment6. Heredity7. Growth and Development Match the characteristic of life to its description: Homeostasis Maintain a balance within the body Cellular Organization All living things are made of cells. Cells --> Tissues --> Organs --> Organ systems --> Organisms Heredity Passing traits from parents to offspring Energy Eating food to obtain (get) energy in order to carry out essential life functions Reproduction Process of making offspring through sexual or asexual reproduction Responsiveness Must respond to stimuli from the environment in order to survive Label the following items as living or non-living Living Dog Potato Earthworm Coral Butterfly Bacteria Cactus Algae Yeast Jellyfish Salmon Rose Bush Human Penguin Pine Tree An Oak Leaf Fern Mold Blade of Grass Sea Sponge Ant Crab Dead Mouse Mushroom Moss Blood Wood Non-Living Glass Fire Plastic Sand Telephone Cloud Clock Sun Rock Water Air Leather Wallet Lemonade The Scientific Method Parts of an Expermiment Independent Variable The variable that the scientist changes Dependent Variable The variable that is being measured Control group Group that serves as the baseline measurement that you compare the rest of your data to because it is the group that has nothing change Constants Things that are purposefully kept the same throughout the experiment Graphs and Charts Use the graph below to answer the questions that follow: 1. What is the dependent variable in this graph? Students2. What is the independent variable in this graph? Scores3. Which score was the most abundant score for this group of students? 804. Which score was the least abundant score for this group of students? 100 A student constructs several terrariums like the one shown below. Each terrarium is exposed to a different amount of sunlight each day. In order to determine the ideal amount of sunlight, which of the following variables must be held constant? Type of Plant Growth Rate of Plants Wavelengths of sunlight Amount of sunlight received What is the independent variable in the experiment above? Growth rate of plants Amount of sunlight each terrarium is exposed to What is the dependent variable in this experiment? Growth rate of plants Amount of sunlight each terrarium is exposed to As part of an experiment to measure decomposition rates of different materials, students put food scraps from the cafeteria in compost bin A and leaves and grass clippings in compost bin B for six weeks. Students in first period measured the temperature in bin A, and students in sixth period measured the temperature in bin B. What is the greatest error in the students' experimental design? There are too many uncontrolled variables in the experiment Temperature is the only dependent variable int he experiment The materials chosen decompose too rapidly The students put equal masses of materials in each bin The diagram below shows a setup for a plant investigation. Which variable is most likely being tested? Hours of light exposure Plant species Soil Volume Soil pH List 4 constants from the experiment show above: A student hypothesizes that green algae will grow fastest when exposed to blue light. To test this hypothesis, the student should design an experiment with which independent variable? Color of algae Rate of algae growth Color of light that algae are exposed to Amount of time per day that algae are exposed to light The graphs show the results of two separate experiments on the same species of plant. Students now want to determine how the use of rainwater or bottled water affects the growth of this plant. Which conditions should be used for optimal growth as the two water types are tested? \20°C, 10 mL 25°C, 35 mL 30°C, 45 mL 35°C, 20 mL Students in a biology class thought that salt water would affect the movements of planaria. They put 25 planaria in salt water and recorded their observations. Which flaw was present in the design of their experiment? There was no hypothesis The procedure was too complicated The sample was too big There was no control A scientist develops a hypothesis, designs an experiment, and obtains data that support her hypothesis. Which of the following best describes when a hypothesis becomes a theory? When the official scientific method is followed When one good set of scientific data supports a theory When a website is created to display the theory When it is supported by consistent data from many experiments A student is investigating the effect of plants on indoor air quality and states, "If plants are added to an indoor environment, the air quality will improve." This statement is an example of - A hypothesis A theory A procedure An observation A biologist gathered data to show the interaction of the golden-cheeked warbler and juniper tree populations. Which conclusion did the biologist most likely make from the data shown? A golden-cheeked warbler population is unable to survive if juniper trees are present. The golden-cheeked warbler population stabilizes when the juniper tree populationincreases above 120 trees per acre. As the juniper tree population increases, the golden-cheeked warbler population increases. The optimum habitat for the golden-cheeked warbler population is 100 juniper trees per acre. Which statement is an inference based on this information? The three seeds have different shapes Milkweed seeds are the most abundant seeds Maple seeds have a membrane-like extension Milkweeds have feather-like Which statement best describes her hypothesis? A student notices fewer robins in yard during the winter She thinks that some robins must migrate in the winter She counts the robins in her yard once a week for 2 years Her research has shown that some robins Students use a dissolved oxygen probe during a laboratory activity involving 1,000 mL samples of pond water. The function of the probe is to - Gather accurate data Analyze investigative conditions test a hypothesis create a model A student wanted to compare the transpiration rates of two different plant species at varying levels of humidity. The results are recorded in the table shown. Each plant group was given the same amount of water and light throughout the investigation. Which procedure should have been performed to prevent error in this investigation? One type of plant should have been tested Fewer plants should have been included in each group The percentage of humidity should have been kept constant Both groups should have been tested in the same soil type at each humidity level Which trial in the table of data shown has questionable data? Trial W Trial X Trial Y Trial Z