Bisc 1005 (online) Chapter 1 QUESTIONS CORRECTRY ANSWERED

Biology - CORRECT ANSWER is the study of living things Deductive Reasoning - CORRECT ANSWER is the process of generating hypotheses from a well-supported generalization such as a scientific theory Autotroph - CORRECT ANSWER A plant or other organism that can make its own food Heterotroph - CORRECT ANSWER An animal or other organism that cannot make its own food Ecosystem - CORRECT ANSWER consists of all the organisms and their nonliving environment within a given area Prokaryotic - CORRECT ANSWER Cell that lacks a nucleus Eukaryotic - CORRECT ANSWER Cell has a "true"membrane-enclosed nucleus Prediction - CORRECT ANSWER A statement describing an expected observation or outcome of a scientific experiment An example of a stimulus that a plant would respond to is: - CORRECT ANSWER sunlight: plants can respond only to certain stimuli in the environment, such as sunlight Which of the following things would be considered complex AND organized? - CORRECT ANSWER red blood cell in the human body DNA is a molecule that directly allows a living thing to: - CORRECT ANSWER store information The process of homeostasis is: - CORRECT ANSWER how organisms maintain a relatively constant internal environment: is the maintenance of a relatively constant internal environment even in changing external environments Living systems need energy to: - CORRECT ANSWER help maintain a relatively constant internal environment; grow larger and replace worn-out parts and build new parts: almost everything about being alive takes energy, which is why acquiring and using energy are characteristics of life The complexity of living systems: - CORRECT ANSWER is also highly organized: Living systems exhibit a combination of complexity and organization that is unique Identify a characteristic that is representative of some, but not all, life-forms - CORRECT ANSWER movement over great distances because not all living things are capable of movement The "first cells" shown at the bottom of this illustration are - CORRECT ANSWER Prokaryotes A good experiment should include as many variables as possible at the same time. True or False - CORRECT ANSWER False Which of these is NOT scientific? - CORRECT ANSWER Consumers are asked which tomato variety produces the best-tasting spaghetti sauce The energy that sustains life ultimately comes from sunlight. True or False? - CORRECT ANSWER True A scientific explanation that is tentative and requires more investigation is called a - CORRECT ANSWER hypothesis A carefully formulated scientific explanation that is based on extensive observations and is in accord with scientific principles is called a: - CORRECT ANSWER theory Complete this analogy: Atoms are to molecules as _____ - CORRECT ANSWER tissues are to organs Molecules are built from atoms and organs are built from tissues The smallest units that still retain the characteristics of an element are called - CORRECT ANSWER atoms Which of the following is an example of deductive reasoning? - CORRECT ANSWER If an object exhibits all the characteristics of life, it must be living To test the effect of vitamin D on growth, two groups of rats were raised under identical conditions and fed the same diet. One of the groups received daily injections of vitamin D. The other group received injections of saline, which did not contain vitamin D. All the rats were weighed weekly for 2 months. In this experiment, the control was the - CORRECT ANSWER group receiving saline Evolution is sometimes described as the change from pre existing life-forms to modern-day organisms. What actually changes, in every case of evolution, is the - CORRECT ANSWER genetic makeup of the species All of the following are important to the theory of evolution EXCEPT: - CORRECT ANSWER changes in individuals within their lifetimes Which is NOT an example of evolution - CORRECT ANSWER A dog learning how to open the cabinet where food is kept