click below
click below
Normal Size Small Size show me how
bioloby
semester final
| Question | Answer |
|---|---|
| Why are microscopes important to the study of cells | they make the cell easier to see and more clear |
| Is the cell wall inside or outside the plasma membrane | outside |
| What controls the functions of a eukaryotic cell | nucleus |
| What do the long tangles of DNA form in a cell | chromatin |
| What is the folded membrane that forms a network of interconnected compartments inside the cell | endoplasmic reticulum or the golgi apparatus |
| What pigment gives plants their green color | chlorophyll |
| What is the network of tiny rods and filaments that form a framework for the cell | cytoskeleton |
| What structure in plants change light energy into chemical energy | chloroplast |
| What are short hairlike projections used for movement | cilia |
| What are long projections that are used for locomotion by the cell | flagella |
| Where does the breakdown of energy occur | mitochondria |
| A prokaryote lacks a true nucleus | true |
| What controls the movement of materials into and out of the cell | plasma membrane |
| define organelle | a membrane-bound structure inside eukaryotic cells |
| where are proteins synthesized | ribosomes |
| where do digestive enzymes occur | lysosomes |
| a cell's contents would be the same inside as well as outside if it were not for selective permeability | true |
| what does the fluid mosaic idea indicate about a cell membrane | phopholipid molecules and some proteins move freely |
| how many layers do the phospholipids in the plasma membrane form | two |
| if a cell has a nucleus, it must be eukaryotic | true |
| does an electron microscope have a higher magnification than a light microscope | yes |
| why is it an advantage if an electron microscope has a higher magnification than a light microscope | yes |
| all cells are similar in structure and function | false |
| what are the three main ideas about cell theory | a.) all cells come from preexisting cells b.) all things are made up of cells c.) the cell is the basic unit of the organization of organisms |
| what do electron microscopes use to focus and magnify an image | electron beams |
| what are living things made up of | cells |
| what did schleiden conclude about plants | they are made up of cells |
| why are folded membranes an advantage to cells | a.) cell processes can be more efficient b.) membranes provide a larger surface area c.) membranes form interconnected compartments d.) they make canals e.) they take up less space |
| do folded membranes form compartments in the cell | true |
| do animals have cell walls | no |
| give an example of carbon isotopes | carbon 12, 13, and 14 |
| which would be a stronger base, a pH of 9 or 13 | nine |
| what is the chemical formula of glucose and fructose | C6 H12 O6 |
| how do glucose and fructose differ | the arrangement of atoms |
| why does water dissolve many ionic and molecular compounds | because of its polarity |
| what do amino acids build | proteins |
| what does the nucleus of an atom contain | protons and neutrons |
| what is the formula for the chemical compound for water | H2O |
| is burning paper a chemical reaction | yes |
| how many electrons can a carbon atom share | four |
| what is an organic compound | it contains carbon and it comes from all living things |
| what is demography | the study of population |
| when would organisms experience exponential growth | when the resources are unlimited |
| what is the shape of the growth curve of a population until it reaches its carrying capacity | a j-curve |
| what kind of reproductive strategy do bacteria show | rapid |
| what kind of age structure does a country with a stable population have | about the same among all groups |
| what effect does the movement of people between countries have on the world population | nothing |
| are fungus decomposers | yes |
| if an ecologist studies ecosystems what might that person study | biotic and abiotic factors of a given area |
| how does CO2 in the atmosphere enter the biotic parts of the biosphere | through photosynthesis |
| how is nitrogen released to the biotic parts of the biosphere | decay by bacteria |
| water is lost to the abiotic parts of the atmoshpere from the biotic parts by the process of | transporation |
| what is the scientific explanation of known facts arrived throught repeated testing | theory |
| what is the study of standards or what is right and wrong | ethics |
| whar are the questions that can be answered by biologists | how, what, and why |
| what topics does a biology course include | the study of all living things |
| why do living things reproduce | to make more living things |
| living things change during their lives throught growth and development | true |
| how do living things adjust to a stimulus | they respond |