BIOL 101 – Straighterline Questions and Answers Already Passed

BIOL 101 – Straighterline Questions and Answers Already Passed The smallest unit that has all of the characteristics of life is the Cell Nutrient molecules are used to build cellular structures or for energy. This best represents which characteristic of life? Living things acquire materials and energy from the environment. Organs are composed of tissues, which are composed of cells. This is an example of which characteristic of life? Living things have levels of hierarchical organization. The blueprints for structural organization and metabolism are contained in ____, and the offspring receive copies of these instructions ___. DNA; from the parent If a new anti-cancer drug is found to be effective in initial tests with mice, what might researchers conclude? The drug is effective in the mouse model; it must still be tested in humans. Technology is the __________________________. application of scientific knowledge for a practical purpose. Which statement regarding science technology is false? Science technology is a basis for all ethical or moral decisions. Which of the following is a potential consequence if people stop using technology in the agriculture industry? There could be a significant decrease in the amount of food produced. A multicellular, photosynthetic organism with complex, specialized cells and tissues would most likely be assigned to Kingdom Plantae Which of the following is one of the domains of life? Eukarya Which sequence of classification categories is in the proper order from least to most inclusive? species, genus, family, order, class, phylum, kingdom, domain 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? Kingdom Fungi Corn belongs to the kingdom Plantae Suggested evidence of natural selection at work in humans is the observation of low hemoglobin levels despite high elevation in Tibetan populations over generations Which level of biological organization is composed of several tissues? organ Which sequence correctly lists the different levels of biological organization, from the smallest and simplest to the largest and most complex? cells-tissues-organs-organ systems-organism Which statement about an ecosystem is incorrect? There is a community of organisms, but no non-living components. When comparing energy and chemicals in an ecosystem, chemicals cycle over and over again but energy flows through once. The layer where organisms can exist on the surface of the earth is the biosphere Which of the following is of least importance when concerning the preservation of ecosystems? Preservation of ecosystems allows humans to exploit as many resources as possible. An ecosystem generally requires solar energy, nutrients, decomposers, consumers and ____. producers A community of organisms along with their physical environment constitutes a(n) ecosystem. Ever since the antibiotic drug penicillin was discovered in 1928, the incidence of resistant bacteria has steadily increased as a direct result of natural selection. The term "biodiversity" refers to 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(n) population. When two glucose molecules combine they form a disaccharide molecule and a water molecule. A covalent bond is a sharing of electrons between two atoms. Correct Which of the following is not a function of ATP within the cell? All of the answer choices are functions of ATP within the cell. Which of the following radiation uses is the one that is most likely to have both beneficial and harmful consequences? using radiation to treat a cancer patient Which of these combinations would be found in a nucleotide? base-sugar-phosphate The backbone of a nucleic acid strand is composed of alternating pentose sugars and phosphate groups. When exercising for 45 minutes, it is actually most important to rehydrate with: at least 30 ounces of water, because even a loss of 10% of body water can have a major impact on body function. In the search to discover the agents that cause mad cow disease, scrapie in sheep, and CJD and kuru in humans, diseased brain tissues were passed through a fine filter to remove bacteria. The filtrate was still infectious, indicating that something smaller than bacteria, either viruses or organic molecules, must be the causative agent. If a virus