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31 Cards in this Set
- Front
- Back
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What are the levels of biological organization?
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Atom
Molecules Organelles Cells Tissue Organism Organ Population Community Biosphere |
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What is the Scientific Method?
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It enables us to answer questions by testing hypothesis.
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What is Hypothesis?
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A tentative testable explanation for an observed phenomena
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What is Control?
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Comparative condition in an experiment were no variables are introduced.
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What is Homeostasis?
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Stable internal Environment.
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What is Evolution?
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Gradual modifications of populations of living things over time.
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What is the structure of an Atom?
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Is made up of many smaller units including PROTONS(+), NEUTRONS, ELECTRONS (-)
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What is Oxydation?
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The LOSS of one or more electrons by an atom or molecule.
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What is Reduction?
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The GAIN of one or more electrons by an atom or molecule.
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What is Ions?
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An atom whose # of electrons differ from its # of protons
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What is Active?
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Movement of molecules or ions across the cell membrane that REQUIRES ENERGY & PROTEIN CHANNEL
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What is Passive?
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Movement of molecules or ions across the cell membrane that DOES NOT REQUIRE ENERGY
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What 2 diffusions are included in passive?
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Simple & facilitated
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What is simple diffusion?
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Diffusion through a cell that does not require a special protein channel
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What is facilitated diffusion?
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passage of materials trough the plasma membrane
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What is the order of Mitosis cycle?
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Prophase
Metaphase Anaphase Telophase Cytokinesis |
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What are Enzymes?
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A type of protein that accelerates a chemical reaction. They are also catalysts
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What is Catalysist?
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substances that retain their original chemical composition while bringing a change in substrate.
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What is Catalist?
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substance that speeds up the reaction.
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What is the 1st stage of cellular respiration?
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Glycolisis---- 2ATP
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The second stage of C.R.?
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Oxydation
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What is the product of Glycolisis?
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Pyruvate Acids
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How many ATP's does Kreb Cycle have?
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2 ATP
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How many ATP's does Electron transport chain have?
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32 ATP
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What is mutation?
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A permanent alteration in a DNA base sequence
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DNA---> MRNA--->PROTEINS
what is the process of DNA to MRNA called? |
Transcription
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DNA---> MRNA--->PROTEINS
what is the process of MRNA to PROTEINS called? |
Translation
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What is Homozygous?
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It is having 2 identical alleles of a gene for a given character.
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What is Heterozygous?
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It is having 2 different alleles of a gene for a given character.
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What is Phenotype?
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A physical function, bodily characteristics or action of an organism
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What is Genotype?
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The genetic makeup of an organism including all the genes that lie among it's chromosomes.
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