PRACTICE QUIZ 1-30-081. Science isa. not testableb. subjectivec. a dynamic processd. hard to reproduce2. Which of the following statements best distinguishes hypotheses from theories in science? a. Theories are hypotheses that have been proved.b. Hypotheses are guesses; theories are correct answers.c. Hypotheses usually are relatively narrow in scope; theories have broad explanatory power.d. Hypotheses must be supported by lots of evidence.e. Theories are proved true in all cases; hypotheses are usually falsified by tests.3. The goal of taxonomists is toa. divide organisms into categories based on sets of similar traitsb. show the history and relationships of organisms to one anotherc. focus on phylogenyd. catalog some of the species on earth4. Which organisms are capable of producing a "red tide"? a. dinoflagellatesb. diatomsc. amoebozoansd. euglenidse. none of the above5. Antibiotics work well on Gram-positive bacteria becausea. Gram-positive cells have lipopolysaccharide in their cell wall.b. Gram-positive bacteria have no way of sharing antibiotic-resistant DNA.c. their slow rate of reproduction keeps them from evolving.d. antibiotics prevent the formation of the peptidoglycan in their cell walls.6. Malaria is caused by what genus and vector?a. Plasmodium, kissing bugb. Plasmodium, mosquitoc. Trypanosoma, kissing bugd. Trypanosoma, mosquito7. In the moss life cycle _____ cells within a sporangium undergo _____ to produce _____ spores.a. diploid ... meiosis ... haploidb. haploid ... mitosis ... haploidc. diploid ... mitosis ... diploidd. diploid ... mitosis ... haploide. haploid ... meiosis ... haploid8. Protistsa. are prokaryotes.b. are mostly unicellular.c. are at the top of many food chains.d. all of the above9. In the “Endosymbiont Theory,”a. ancestral prokaryotes “consumed” smaller prokaryotes that didn’t get digested.b. ancestral prokaryotes began a symbiotic relationship with smaller prokaryotes.c. the relationships of prokaryotes led to the evolution of eukaryotes.d. the organelle mitochondria is the strongest evidence for the theory.e. all of the above10. Mitosis, a type of cell division, producesa. two genetically identical cells—meaning ploidy stays the same.b. two genetically identical cells—meaning ploidy changes.c. four genetically different cells—meaning ploidy stays the same.d. four genetically different cells—meaning ploidy changes.11. In plants, a ___________ produces gametes, while a(n) ___________ produces spores.a. sporophyte, gametophyteb. gametophyte, sporophytec. sporangium, gametophyted. gametangium, antheridium12. Bacterial cells, but not eukaryotic cells, possess _____.a. Photosynthetic pigmentsb. A nucleoid with a circular chromosomec. Membrane-enclosed organellesd. Cell walls13. The conspicuous part of a fern plant is a _____. a. haploid gametophyteb. diploid gametophytec. diploid sorusd. diploid sporophytee. haploid sporophyte14. What is true about a clade?a. It is a group of unrelated organisms.b. It is a group of species with a common ancestor.c. It is a hypothesis about a group of species.d. b and ce. All of the
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