Intro to Biology Straighterline Exam Questions and Answers 100% Pass

Intro to Biology Straighterline Exam Questions and Answers 100% Pass Organs are composed of tissues, which are composed of cells. This is an example of which characteristic of life? - Answer- Living things have levels of hierarchical organization. Nutrient molecules are used to build cellular structures or for energy. This best represents which characteristic of life? - Answer- Living things acquire materials and energy from the environment. The smallest unit that has all of the characteristics of life is the - Answer- cell. The blueprints for structural organization and metabolism are contained in____, and the offspring receive copies of these instructions___. - Answer- DNA; from the parent If a new anti-cancer drug is found to be effective in initial tests with mice, what might researchers conclude? - Answer- The drug is effective in the mouse model; it must still be tested in humans. True or false? Science technology is a basis for all ethical or moral decisions. - Answer- False True or false? Science technology has brought about life-improving discoveries, such as antibiotics. - Answer- True True or false? Science technology helps us to understand the causes of cancer. - Answer- True True or false? Science technology may ease the feeding of the world population by producing new plant strains. - Answer- True True or false? Scientific experimentation may make use of a model instead of an actual subject. - Answer- True Technology is the______. - Answer- application of scientific knowledge for a practical purpose. Which of the following is a potential consequence if people stop using technology in the agriculture industry? a) There could be a significant decrease in the amount of food produced. b) There would be a collapse of many of the terrestrial ecosystems on Earth. c) The extinction of the top level species that reside in the communities around the agricultural land. d) The amount of food produced would increase. e) None of these consequences will occur if people stop using technology in the agriculture industry. - Answer- a) There could be significant decrease in the amount of food produced. Corn belongs to the kingdom... - Answer- Plantae You have discovered a previously unknown organism. It is multicellular, with a filamentous form, and absorbs food from its environment. Upon microscopic examination, you see that the cells have nuclei. How would you classify this organism? - Answer- kingdom Fungi Which domain contains organisms that are adapted to life in harsh environments? - Answer- domain Archaea Which of the following is one of the domains of life? a) Animalia b) Eukarya c) Molds d) Protista e) Fungi - Answer- b) Eukarya Which classification category contains the closest related group of organisms? - Answer- genus low hemoglobin levels despite high elevation in Tibetan populations over generations is an example of ______ - Answer- natural selection at work in humans Which level of biological organization is composed of several tissues? - Answer- organ A physician specializes in surgery involving the following group of organs: mouth, esophagus, stomach, and intestines. Overall, what is the highest level of organization that this physician is specialized in? - Answer- organ system When comparing energy and chemicals in an ecosystem how many times do chemicals and energy flow through? - Answer- chemicals cycle over and over again, but energy flows through once All the organisms of various species living within a given area constitute a - Answer- community. True or false? Chemicals are recycled in an ecosystem. - Answer- True True or false? Energy flows through an ecosystem, with some being lost as heat. - Answer- True True or false? Some organisms produce food used by themselves and others. - Answer- True True or false? There is a community of organisms, but no non-living components. - Answer- False True or false? Climate is the main factor that determines where an ecosystem will be located. - Answer- True The most important factor that determines where major ecosystems are located on the globe is - Answer- climate. An ecosystem generally requires solar energy, nutrients, decomposers, consumers, and _____. - Answer- producers. biodiversity is adversely affected as humans have destructive effects on ecosystems as - Answer- the human population size increases The term "biodiversity" refers to - Answer- the total number of species, variation of species and the ecosystems in which they live. All the banded sunfish (Enneacanthus obesus) in a pond would comprise a - Answer- population. Ever since the antibiotic drug penicillin was discovered in 1928, the incidence of resistant bacteria has steadily increased as a direct result of - Answer- natural selection. Nutrient molecules are used to build cellular structures for energy. This best represents which characteristic of life? - Answer- Living things acquire materials and energy from the environment. An important source of genetic variation is provided by: - Answer- mutation Technology is the __________. - Answer- the application of scientific knowledge for practical purpose. Which classification category includes the most species? - Answer- kingdom What is the proper sequence of classification categories from least to most inclusive? - Answer- species, genus, family, order, class, phylum, kingdom, domain True or false? Common names may include different sets of organisms. - Answer- True True or false? Scientific names can be known and recognized by all scientists throughout the world. - Answer- True True or false? To recognize an organism in the literature by its common name, a scientist would have to know multiple languages. - Answer- True True or false? The scientific name begins to tie the organism into related groups. - Answer- True True or false? The common name clearly identifies an organism as unique. - Answer- False The three major domains of life are - Answer- archaea, bacteria, eukaryotes. Which domains contain organisms that lack a membrane-bound nucleus? - Answer- Archaea and Bacteria