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Firmature Midterm
Science Midterm
| Question | Answer |
|---|---|
| What system based on shared characteristics is used to classify organisms? | Seven-level system |
| The scientific name for an organism comes from it's... | genus and species |
| What can you find by working through the statements in a dichotomous key? | the identity of an organism |
| Carolus Linnaeus is known for... | founding the science of taxonomy |
| The seven level classification is | kingdom, phylum, class, order, family, genus, species |
| What are the six kingdoms? | Fungi, Protista, Plantae, Animalia, Archaebacteria, Eubacteria |
| The organisms in what kingdom usually move by themselves and have specialized sense organs that allow them to respond to their environment? | Animalia |
| An example of a simple animal is… | a sponge |
| Today, what do scientists do when they encounter an organism that fits in none of the kingdoms? | create a new kingdom |
| How many kingdoms do scientists use to classify living things today? | six |
| How do fungi take in and use nutrients form their surroundings? | they absorb and digest them |
| What must a plant be exposed to for photosynthesis to occur? | sunlight |
| What does a dichotomous key consist of? | a series of paired statements |
| How many kingdoms of bacteria are there today? | two |
| Protista | a kingdom of mostly one-celled eukaryotic organisms that are different from plants, animals, bacteria, and fungi |
| Fungi | a kingdom of non-green, eukaryotic organisms that do not move, reproduce by spores, and get food from their surroundings by breaking down substances and absorbing them |
| Archaebacteria | a kingdom made up of bacteria that live in extreme environments |
| Animalia | a kingdom made up of complex, multicellular organisms that lack cell walls, can usually move around, and respond quickly to their environment |
| Plantae | a kingdom of complex, multicellular organisms that are usually green, have cell walls, cannot move around, and use the sun's energy to make sugar by photosynthesis |
| Eubacteria | a kingdom that contains all prokaryotes except archaebacteria |
| Which of the kingdoms have single-celled organisms and which are multicellular? | single-celled= eubacteria, archaebacteria, protista; multicellular= animalia, fungi, plantae |
| What molecule is the major energy carrier in the cell? | ATP |
| What type of molecule is DNA? | nucleic acid |
| What do gravity, sound, and light have in common? | they are stimuli |
| Maintaining stable internal conditions is called… | homeostasis |
| What do most of the chemical reactions involved in a metabolism require? | water |
| The subunits of protein are… | amino acids |
| What are food, water, air, and a place to live? | basic needs of most living things |
| How much of the human body is water? | about 70% |
| What characteristics do all living things have in common? | reproduce, grow and develop, have DNA, made of cells, can sense and respond to change, use energy |
| Name two functions of lipids. | help the cell membrane and store energy |
| A group of cells with the same function make up a… | tissue |
| In what kind of tissues does photosynthesis take place? | ground |
| The functions of an organ's parts are related to it's… | structure |
| What is the cell theory? | all living things are made up of cells, cells are the basic units of life, cells come from cells |
| Most cells are very small because of the… | surface-to-area ratio |
| What cell part supports the cell and might be made of cellulose or chitin? | cell wall |
| What part of the cell keeps the cell membrane from collapsing? | cytoskeleton |
| Ribosomes are found on the membrane of the… | ER |
| What cell parts carry materials between organelles? | vesicles |
| What are the advantages of being multicellular? | longer life span, larger size, specializaion |
| How are eubacteria different from archaebacteria? | their ribosomes |
| Both archaebacteria and eubacteria… | they have circular DNA |
| What does the Golgi complex do in a cell? | packages and distributes proteins |
| What is the job of lysosomes? | digest food particles |
| What three elements do all cells have in common? | DNA, cytoplasm, cell membrane |
| What three elements do plant cells have that animal cells do not? | cell wall, cytoplast, vacuoles |
| Osmosis is important to cells because… | cells are filled with fluids that are made mostly of water |
| Cellular respiration is the process by which… | cells use oxygen to produce energy from food |
| Organelles and chromosomes are copied during… | the cell cycle |
| Fermentation occurs when a cell can't get… | oxygen needed for cellular respiration |
| What is a product of photosynthesis? | glucose |
| What do all organisms need in order to survive? | energy and raw materials |
| Which type of cells contain more DNA? | eukaryotic cells |
| What is the formula for cellular respiration? | C6H1206 + O2 --> CO2 + H2O + energy |
| What is the formula for photosynthesis? | 6CO2 + 6H2O --> C6H12O6 + 6O2 |