MTTC Integrated Science Exam
QUESTIONS AND ANSWERS 100%
SOLVED (Newest 2025) The experimental factor that is manipulated; the variable whose effect is being studied. Placed on the x-axis (horizontal) on a graph. - Correct Answers ✅Independent Variable The variable that is measured in an experiment. Placed on the y-axis (vertical) on a graph. - Correct Answers ✅Dependent Variable Must be repeatable. Possible to be disproved and capable of change. - Correct Answers ✅Scientific theory Random sampling is the preferred, but isn't always possible.A large sample will yield the most accurate information. - Correct Answers ✅Sampling and Sample Size Only one variable should be manipulated at a time. - Correct Answers ✅Manipulating Variables A factor that is held constant to test the relative impact of an independent variable - Correct Answers ✅Control variable In most cases, 911 should be called immediately. - Correct Answers ✅Response to Lab Accident 1 / 4
MTTC Integrated Science Exam
QUESTIONS AND ANSWERS 100%
SOLVED (Newest 2025) Do not use a fire extinguisher. Just place a watch glass or wet towel over it to cut off Oxygen supply. - Correct Answers ✅Response to Fire in a Beaker or Flask Specimens should be rinsed before using. Latex glover preferred. Avoid use of formaldehyde/dispose of correctly.Need to provide alternative for students with moral objections to assingment. - Correct Answers ✅Guidelines for Dissections Store all in secured, dry area. Acids locked in separate area. - Correct Answers ✅Storing Lab Chemicals Traced back to ancient Greeks (i.e. Aristotle) - Correct Answers ✅Origin of Biological Sciences Dissected human bodies; created a book on anatomy - Correct Answers ✅Andrea Vesalius Father of Microscopy, first to see and describe bacteria, yeast plants, and microscopic life found in water - Correct Answers ✅Anton van Leeuwenhoek Instead of a light, a beam of electrons pass through specimen. Resolution about 1,000 times greater than light 2 / 4
MTTC Integrated Science Exam
QUESTIONS AND ANSWERS 100%
SOLVED (Newest 2025) microscope. Will kill specimen though. - Correct Answers ✅Scanning Electron Microscope (SEM) Famous for Hook's law describing elasticity. But called a "virtuoso", able to contribute findings to any major field in science - Correct Answers ✅Robert Hooke Famous for binomial system of nomenclature. Each living organism has two names, a genus and species. Considered father of modern ecology and taxonomy - Correct Answers ✅Carl Von Linnaeus Discovered role of microorganisms in the cause of disease, pasteurization, and rabies vaccine. - Correct Answers ✅Pasteur Specific diseases caused by specific pathogens - Correct Answers ✅Koch's Postulates Cell is the common structural unit in plants and animals.Proposed by Mattias Scheleiden and Schwann. - Correct Answers ✅Cell theory Discovered the structure of DNA was a double helix (in the 1950s). Made it possible to understand how DNA replicated 3 / 4
MTTC Integrated Science Exam
QUESTIONS AND ANSWERS 100%
SOLVED (Newest 2025) and synthesized proteins - Correct Answers ✅Watson and Crick
- Systems, order, and organization
- Evidence, models, and explanation
- Constancy, change, and measurement
- Evolution and equilibrium
- Form and function - Correct Answers ✅Commonalities
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Among all Sciences All evidence is empirical; all evidence must be observed by the five sense. - Correct Answers ✅Empirical Evidence Most accepted source for information on scientific experiments and studies - Correct Answers ✅Peer- reviewed Journals Chemicals in the air; include carbon monoxide, sulfur dioxide, and chlorofluorocarbons (CFC's) - Correct Answers ✅Air Pollution Contaminants enter water by ground runoff or by leaching - Correct Answers ✅Water Pollution