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biology stack
for my biology final
| Question | Answer |
|---|---|
| What is polarity | the condition of being positve or negative |
| how do we determine atomic mass? | add the total number of neutrons, protons, and electrons |
| steps of the scientific method are? | 1)state the purpose 2)form the hyopothesis 3)test it 4)check and interpret 5) record data |
| what charge do electrons carry? where are they found | negative charge; and are found on the outside of the nucleus in the electron clouds |
| who defined the scientific method? | alhazen |
| how do we determine the atomic number? | we add the the number of protons in the nucleus |
| what is cohesion? | attraction between molecules of the same substance |
| what are the three basic forms of matter | solid, liquid and gas |
| what is a chemical change? | when the molecules change into another and can not be turned back |
| what is a pysical change? | when the same compound just changes form but can be changes back like if ice melts to water |
| what are enzymes? | Proteins that are produced in cells and that affect chemical reactions. |
| what is adhesion | Adhesion is the tendency of certain dissimiliar molecules to cling together due to attractive forces. |
| is C6H12O6 a compound or a matter? | compound |
| what is a law> | a written understood ruled that contains consequences |
| what goes on the y-axis | the dependent variable |
| what is independent variable | what you change in an experiment |
| what is dependent variable | the thing that changes when the ind variable is changes |
| what is control | the thing in an experiment that stays the same and doesnt change |
| what are the give characteristics that all living things have in common | obtain and use energy reproduce cells grow and develop respond to the enviroment |
| what is the basic unit of organization for all living things? | cells |
| what is nucleus | Part of the cell that contains the cell's genetic material.and the control center of the cell |
| what is the function of cytoplasm | generally clear jelly-like material that fills cells. and holds the organelles in place |
| what is the function of ribosomes | process by which proteins are made from individual amino acids.and made of rna |
| what is the function of endoplasmic reticulum | internal membrane system in cells. and some proteins are modified |
| what is the function of golgi apparatus | modifes, sorts, and packages proteins from the endoplasmic reticulum |
| what is the function of mitochondria | cell organelle that converts the chemical energy stored in food into compounds that are more conveinent for the cell to use. |
| what is the function of chlorplast | captures energy from sunlight and converts it into chemical energy |
| what is the function of vacuoles | they store materials such as water salt proteins and carbohydrates |
| what is the function of lysosomes | they break down certain materials in the cell and recycles them and uses them again |
| what is the function of the plasma membrane | controls the movements of various substances in and out of the cell |
| what is the function of the cell wall | to support the cell membrane in plants algea and some bacteria |
| what is function of vesicles | transport material within the cells like from the endoplasmic reticulum to the golgi apparatus |
| molecules are constantly______ | in motion |
| what is osmosis and how is it different from diffusion | osmosis is from a low to a high concentration and its differnt because diffusion is from a high to a low concentration |
| what is hypotonic | refers to a solution with a comparatively lower concentration of solutes compared to another |
| what is hypertonic | higher solute concentration compared with another. |
| what is isotonic | having the same (or equal) osmotic pressure and same water potential since the two solutions have an equal concentration of water molecules. |
| osmosis and diffusion are ____ and they _______require energy | passive; do not |
| what is active transport | transport throughout the cell that requires energy |
| what is passive transport | he movement of molecules through cell membranes without the use of energy by the cell |
| diffusion | process by which molecules spread from areas of high concentration, to areas of low concentration. |
| osmosis | Osmosis is the net movement of water across a selectively permeable membrane driven by a difference in solute concentrations |
| what is facilitated diffusion | molecules such as gluclose that cannot diffuse across the cell membranes lipid bilayer on their own move through protein channels |
| what is endocytis | process by which a cell takes material into the cell by in folding of the cell membrane |
| what in exocytis | proces by which a cell releases large amounts of material |
| the energy molecule used in the cell is ____ | atp |
| photosynthesis occurs in organelles called | chloroplast |
| chloroplast contain a pigment called____ that captures energy from light | chlorphyll |
| resperation occurs in which organnelle | mitochondria |
| the ability to do work is known as | energy |
| when atp is made energy is | stored |
| when atp is broken down energy is | released |
| organisms that make there own food are | autotrophs |
| what is the formula for photosynthesis reactants products | 6H2O + 6CO2+ Light Energy ----> C6H12O6+ 6O2 carbon and water gluclose and oxygen |
| prokaryote | a single celled organism lacking a nucleus |
| lyctic infection | process in which a virus enters a cell makes a copy of itself and causes the cell to burst. |
| bacillus | rod shaped prokaryote |
| lysogenic infection | process in which a virus embeds its dna into the dna of the host cell and is replicated along with its host cells |
| coccus | spherical shaped cell |
| strepto | spherical gram of bacteria that can cause infections |
| spirillum | spiral shaped bacteria |
| diplo | round bacerium that occurn in pairs of two joined cells |
| virus | a cellular organism whos genomes consist of nucleic acid and replicate inside of host cells |
| staphylo | spherical gram- positive that form irregular colonies causing infection |
| homeostasis | the ability or tendency of an organism or cell to maintain internal equilibrium by adjusting its physiological processes |
| cell structure that is involved in protein synthesis | ribosomes |
| which structures are found in every living cell | nucleus cell membrane mitochondria |
| in humans wht happens when the breathing rate increases | additional oxygen will diffuse into the blood as carbon dioxide diffuses outt of the blood in the lungs |
Created by:
dezaraeb2012
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