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Biology
Chapters 1-4
| Question | Answer |
|---|---|
| The function of mitochondria is | cellular respiration. |
| The function of chloroplasts is | photosynthesis. |
| The Golgi apparatus | stores, modifies, and packages proteins. |
| The two main functions of the rough endoplasmic reticulum are the production of | membrane and proteins to be secreted by the cell. |
| The membranous compartmentalization of a cell | allows different metabolic processes to occur simultaneously. |
| Unlike animal cells, plant cells have __________ and __________. Unlike plant cells, animal cells have __________. | chloroplasts . . . cell walls . . . centrioles |
| Which one of the following is not found in prokaryotic cells? | a membrane-bound nucleus |
| The idea that all living things are composed of cells and that all cells come from other cells defines: | the cell theory. |
| Genetic information is encoded in the | sequence of nucleotides in DNA. |
| Proteins differ from one another because | the sequence of amino acids in the polypeptide chain differs from protein to protein. |
| In salad dressings, oil quickly separates from vinegar because oils are | nonpolar |
| The storage form of carbohydrates in animals is __________ and in plants is __________. | glycogen . . . starch |
| Which list below consists of only polymers? | proteins, lipids, nucleic acids, polysaccharides |
| The results of dehydration synthesis can be reversed by | hydrolysis. |
| organic compounds | always contain carbon and hydrogen. |
| In the equation 2 H2 + O2 → 2 H2O, the H2 molecules are __________ and the H2O molecules are __________. | reactants . . . products |
| a buffer | donates OH– ions when conditions become too acidic and accepts OH– ions when conditions become too basic. |
| A solution with a pH of 7 is | neutral |
| a solute | the substance that is dissolved in solution. |
| The hydrogen atoms of a water molecule are bonded to the oxygen atom by __________ bonds, whereas neighboring water molecules are held together by __________ bonds. | polar covalent . . . hydrogen |
| A(n) __________ forms when two atoms share electrons. | covalent bond. |
| When full, the innermost electron shell of an atom contains __________ electrons, and the outermost shell contains __________ electrons. | 2 . . . 8 |
| A radioactive isotope is one that | decays. |
| The atomic number of an atom is | the number of protons in the atom. |
| The nucleus of an atom contains | protons and neutrons. |
| In the equation 2 H2 + O2 → 2 H2O, | only H2O is a compound. |
| Which one of the following is not a trace element in the human body? | nitrogen. |
| To be scientifically valid, a hypothesis must be | testable and falsifiable. |
| A hypothesis is | a tentative answer to some question. |
| An antibiotic kills 99.9% of a bacterial population. You would expect the next generation of bacteria | to be more resistant to that antibiotic. |
| Organisms belonging to the Kingdom Plantae | are photosynthetic and contain cells that are surrounded by cell walls. |
| Your instructor asks you to look into your microscope to see a prokaryotic cell. You will be looking for a cell that | has a membrane. |
| The ultimate source of energy flowing into nearly all ecosystems is | sunlight. |
| Which one of the following sequences illustrates that hierarchy as it increases in complexity? | molecule, cell, tissue, organ, organ system, organism, population, community, ecosystem |
Created by:
lyndsey_m_daigle
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