SCIENCE BI1203-Spring 2016 Chapter 1:Introduction to Life Science Midterm

SCIENCE BI1203-Spring 2016 Chapter 1:Introduction to Life Science Midterm What is biology? A) the scientific study of life B) the scientific study of the environment C) the scientific study of DNA D) the scientific study of ecosystems Which of the following is NOT a property of life? A) Populations of organisms rarely change over time. B) Living things exhibit complex but ordered organization. C) Organisms take in energy and use it to perform all of life's activities. D) Organisms reproduce their own kind. What are the two main processes upon which ecosystems depend? A) speciation and evolution B) nutrient recycling and energy flow C) decomposition and nutrient recycling D) sunlight and photosynthesis Which of the following is a producer? A) oak tree B) earthworm C) sun D) cat Humans are . A) producers B) producers and consumers C) consumers D) producers and decomposers Which of the following structures can perform all the activities required for life? A) DNA molecules B) cells C) organelles D) nuclei Relative to prokaryotic cells, eukaryotic cells are usually . A) larger and more complex B) smaller and simpler C) larger and equally complex D) smaller and more complex Humans are composed of cells. A) bacterial B) eukaryotic C) plant D) prokaryotic What name is given to the functional compartments of a cell? A) genomes B) nuclei C) genes D) organelles The DNA of a eukaryotic cell is found within the . A) archaea B) nucleus C) prokaryotic cell D) insulin What is a gene? A) a type of eukaryotic cell B) an organelle that houses DNA C) a type of prokaryotic cell D) a unit of inheritance More than half of all known species are . A) plants B) insects C) bacteria D) vertebrates Taxonomy is the . A) study of cells B) naming and classifying of species C) study of organisms and their interaction with the environment D) study of genes How does taxonomy assist biologists? A) by providing easily remembered scientific names for organisms B) by categorizing diverse items into smaller and smaller numbers of groups C) by reducing life to its smallest common denominator, the cell D) all of the above Which domain(s) consist(s) of prokaryotic cells? A) Bacteria only B) Eukarya only C) Archaea and Eukarya D) Bacteria and Archaea A newly discovered multicellular organism obtains food by digesting dead organisms. Such an organism is most likely a member of the kingdom . A) Plantae B) Fungi C) Protista D) Animalia Members of the kingdom Plantae differ from members of the other kingdoms of Eukarya in that most members of the kingdom Plantae . A) are decomposers B) are unicellular C) are consumers D) produce their own food The branch of biology that explains both the diversity and the unity of life is . A) evolution B) microbiology C) taxonomy D) genetics Which of these is most closely associated with Darwin? A) energy flow B) ecosystem structure C) the three domains of life D) natural selection Science is . A) the inquiry-based effort to describe and explain nature B) the search for truth C) an organized set of principles for how to behave ethically and morally D) all of the above A hypothesis is a(n) . A) tentative answer to a question B) guess C) observation D) theory How do hypotheses differ from theories? A) Theories are more comprehensive than hypotheses. B) Theories must be testable; hypotheses do not need to be testable. C) Hypotheses are educated guesses, and theories are tentative explanations. D) Hypotheses are derived from experimentation, whereas theories are derived from observation. Using the branching tree of life for bears depicted in the accompanying figure, choose from among the following bear species the one that is most distantly related to the sun bear. A) brown bear B) sloth bear C) spectacled bear D) giant panda In the process of evolution by natural selection illustrated in the accompanying figure, which of the following is the mechanism or agent of natural selection?