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* Science Exam *
Science Exam 4th Period 12/19/12
Question | Answer |
---|---|
Observing | Using your senses to analyze something |
Inferring | To guess/predict |
Stating | Giving/saying FACTS |
Prediction | Guess/what you think will happen |
Quantitative | Description using numbers |
Qualitative | Description using characteristics |
Scientific Inquiry | Process scientists use to answer a question/problem |
Problem | A question a scientist has that he/she uses a scientific inquiry to figure out. |
Hypothesis | First step in scientific method. Educated guess based on observations. |
Procedure | The instructions for the experiment. |
Data | The items of information that you collect from the experiment. |
Results | The answer to the problem/question |
Conclusion | A summary of the results you collect from the experiment |
Variables | Factors that influence the outcome of an experiment |
Manipulating | The variable that you change in the experiment; independent |
Responding | The variable that changes as a result of the manipulating; dependent |
Control | Do not change; constant variable |
Communication Results | Sharing your results |
Technology | Changes the way people live, how people modify things to meet needs |
Engineer | A person who is trained to use technology and science to solve problems |
Kilo | 1000 |
Hecto | 100 |
Deca | 10 |
Unit | 1 |
Deci | 1/10th |
Centi | 1/100th |
Milli | 1/1000th |
What do grams measure? | Mass |
What do liters measure? | Volume |
What do cubic centimeters measure? | Volume |
What do millimeters measure? | Length/distance |
What do kilograms measure? | Mass |
What do meters measure? | Length/Distance |
Biotic | Living |
Abiotic | Non-Living |
Dichotomous Key | Method of categorizing using choices |
Botany | Study of plants |
Binomial Nomenclature | System of naming species; genus first, species second |
Taxonomy | Science of classifying |
Classification | Organization |
Domain | First level of classification hierarchy |
Classification Hierarchy | Levels of classification of species |
Cell Theory | All living things are composed of cells. Cells are the basic units of structure and function in living things. New cells are produced from existing cells. |
Cell | A unit that all organisms are made up of |
Unicellular | An organism with only one cell |
Prokaryotic | Among tiniest of cells. Lack Membrane bound nucleus and organelle. Unicellular. |
Eukaryotic | 10x larger then pro. Have nucleus and membrane bound organelles |
Multicellular | An organism made up of more than one cells |
Spontaneous Generation | A generation popping up spontaneously. |
Plasmid | A circular loop where genetic information is stored |
Capsule | Protects bacterial cell |
Cell Wall | The outer layer of the cell that protects it |
Plasma Membrane | Determines what comes in and out of the cell |
Ribosome | Help make protein |
Nucleoid | Contains part of prokaryotic cell DNA |
Pili | Found on surface of bacteria |
Flagella | Moves around outer layer of cell |
DNA | Nucleic acid that carries genetic information |
Cytoplasm | Cell substance |
Organelle | Structure within a cell that performs a specific function |
Nucleus | "Boss" Conducts all cell functions |
ER | Transportation of cell materials |
Centriole | Found near nucleus |
Golgi Apparatus | Where proteins go after they have been made |
Cytoskeleton | Network of protein filaments and microtubles in the cytoplasm |
Mitochondria | Power source for cell |
Lysosomes | Cleans and disinfects |
Vacuole | Storage Site |
Chloroplasts | Organelle that carries out photosynthesis |
Peroxisomes | Break down and produce hydrogen peroxide |
Chromosome Theory | Theory that genes are located on chromosomes |
Chromosome | Genetic material of the cell |
Chromatin | Substance of the nucleus consisting of DNA, RNA, and other proteins |
Chromatid | Daughter strands of chromosomes |
Nucleosomes | Contains DNA |
Autosomes | 22 Pairs, 44 + 2 = 46 in all |
Sec Chromosomes | X or Y, determines sex of offspring |
DNA Replication | Process of making an identical copy |
Mitosis | When most cells reproduce |
Stages of Mitosis | In order they are prophase, metaphase, anaphase and telophase |
Asexual Reproduction | An organism capable of reproducing without a mate |
Prophase | First stage, when chromosomes become visible |
Metaphase | Second stage, when chromosomes become attached to spindle fibers |
Anaphase | Third stage, when the chromosomes separate |
Telophase | Fourth stage, when the chromosomes go to the separate ends of the nuclei |
Adenine | Thymine |
Thymine | Adenine |
Guanine | Cytosine |
Cytosine | Guanine |
Carolus Linnaeus | Creator of binomial nomenclature |
Zacharias Jansen | Gets credit for first microscope in 1595 |
Robert Hooke | Described and named cells |
Anton Van Leeuwenhoek | Created compound microscope |
Galileo | Worked out principals of lenses. Made focusing device |
Louis Pasteur | Invented heat process called pasteurization that helps kill bacteria |
Francesco Redi | Credited with creating the controlled experiment |
Matthias Schlieden | Discovered plants are made of cells |
Theodor Schwann | Created cell theory, animals are made of cells |
Rudolph Virchow | Studied diseases |
Max Knott, Ernst Ruska | Invented electron microscope |
Watson and Crick | Credited for discovering shape of DNA (double helix) (relied on other scientists) |
Rosalind Franklin | Studies x-ray images of DNA. Crick and Watson stole her idea that the shape of DNA is a double Helix. |
Walther Flemming | Discovered chromosomes |
Walter Sutton | First scientist to provide evidence that chromosomes carry the cell's unit of inheritance |
Science | Study of why and how things happen |
First scientists | Romans |
What does a scientist do when they make a discovery? | They publish it |
Scientific method | The way to find the answer to a scientific method |