Biology EOC – Missouri Questions With Complete Solutions

Biology EOC – Missouri Questions With Complete Solutions What are some sources of error in experiments? correct answer: 1. Instrumental 2. Personal (inaccurate observations) 3. Sampling 4. Replication (lack of consistency/accuracy) 5. Experimental designs 6. Measurements hypothesis correct answer: tentative explanation of a phenomenon based on observations that can be tested by further investigation independent variable correct answer: The experimental factor that is manipulated; the variable whose effect is being studied (found on the X-axis of a line graph) dependent variable correct answer: a variable (often denoted by the y axis) whose value depends on that of another control group correct answer: the standard to which comparisons are made in an experiment Why should experiments be repeated? correct answer: 1. Shows the variability of responses 2. Limited resources may affect results 3. Need to show a difference between pair of means 4. Reliability 5. To show consistency 6. Analysis of data to form conclusions 7. Helps you form a scientifically literate viewpoint w/ valid supporting data What are the types of obsevations? correct answer: Qualitative and Quantitative qualitative observation correct answer: An observation that describes using your 5 senses. It also uses NO numbers. quantitative observation correct answer: an observation that is measurable such as amount, height, length, weight etc. numerical based. What are the scientific inquiry steps? correct answer: 1. Ask Question 2. Do Background Research 3. Construct Hypothesis 4. Test with an Experiment 5. Analyze Results, Draw Conclusions (and go back to your hypothesis if it didn't work) 6. Report Results What are the 3 parts of cell theory? correct answer: 1. All living things are made of cells. 2. Cells are the basic units of life (structure and function) 3. All cells come from cells. Prokaryotes correct answer: Known as "simple cells" or bacteria are cells that do not have a nucleus or nuclear membrane; often found in bacteria Eukaryotes correct answer: Cells that have a nucleus, where DNA is stored and is far more complicated than prokaryotes; Found in plants, animals, fungi, protists Cytoskeleton correct answer: provides internal structure Unicellular correct answer: organism made of one cell multicellular correct answer: organism that exists as specialized groups of cells; cell are organized into tissues that perform the same function; tissues form organs and organs make up an organ system chloroplast correct answer: capture solar energy for photosynthesis golgi body correct answer: package, distribute products