Download Exam II Solved - Life and Earth Science | ISCI 2001 and more Exams Humanities in PDF only on Docsity!
Bacteria are important because they Student Response Correct Answer A. decompose organic matter to recycle nutrients. B. fix Nitrogen so it can be used by plants. C. can be used to make food. D. all of the above.
Which of the following would be classified as a protist? Student Response Correct Answer A. Moss. B. Amoeba. C. E. coli bacteria. D. Sponge.
Which of the following is an example of a population evolving? Student Response Correct Answer A. A child born with Down Syndrome. B. Asexual reproduction in the sea anemone. C. Bacteria becoming resistant to antibiotics over several generations. D. All of the above. E. None of the above.
Each of the following are adaptations related to acquiring mates except Student Response Correct Answer A. the male peacock's brilliant feathers. B. deer antlers for fighting over females. C. large size and strength in male elephant seals. D. the erratic flight of the Painted Lady butterfly.
Which of the following statements regarding the origin of life is false? Student Response Correct Answer
B. Life originated on an Earth whose atmosphere contained no oxygen. C. The first genes were probably made of DNA, not RNA. D. Miller and Urey generated amino acids and many other organic molecules by shooting electric sparks through a model of Earth's early atmosphere.
Darwin’s theory of evolution Student Response Correct Answer A. states that natural selection is a result of organisms competing for food and other resources. B. states that evolution was the result of organisms with traits that help them survive passing theor genes on to the next generation. C. resulted from careful scientific observation. D. all of the above.
Adaptations Student Response Correct Answer A. may include traits that help individuals find mates. B. are errors in the genetic code that are usually not passed down. C. will only pass to offspring if they occur in somatic chromosomes. D. none of these choices.
The change in coloration of the peppered moth occurred because of Student Response Correct Answer A. mark and recapture methods. B. predation by bats. C. infection by lichen. D. the impact of pollution.
Which classification system makes use of multiple levels from domain to species? Student Response Correct Answer A. Scientific naming system. B. Cladistics.
B. photic zone. C. intertidal zone. D. aphotic zone.
When an Egyptian plover cleans the teeth of a crocodile, we see an example of Student Response Correct Answer A. predation. B. parasitism. C. commensalism. D. mutualism.
The total set of biotic and abiotic resources a species uses within a community is its Student Response Correct Answer A. niche. B. food web. C. primary productivity. D. trophic level.
The relationship between a leech and the animal it feeds off of is an example of Student Response Correct Answer A. mutualism. B. commensalism. C. predation. D. parasitism.
A population of beetles in which some individuals are blue and some individuals are green evolves by chance because more alleles of one color are transmitted to the next generation than alleles of the other color. This mechanism of evolution is known as Student Response Correct Answer A. migration.
B. mutation pressure. C. natural selection. D. genetic drift.
On average, what percent of the energy at one trophic level becomes available at the next trophic level? Student Response Correct Answer A. 90% B. 10% C. 50% D. 1%
Fertile soils are found in Student Response Correct Answer A. temperate grasslands and coniferous forests. B. tropical forests and temperate grasslands. C. deserts and tropical forests. D. deserts and temperate grasslands.
During ecological succession, Student Response Correct Answer A. biodiversity often decreases over time. B. early colonizers are usually found in the climax community. C. the activities of earlier waves of colonizers cause nutrients and organic matter to accumulate in a habitat, allowing later colonizers to thrive.
Human population Student Response Correct Answer A. has grown continuously for at least two thousand years.
B. plants, animals, and fungi. C. bacteria, archaea, and eukarya. D. plants, animals, and protists.
Fungi Student Response Correct Answer A. cause the common cold and Lyme disease in humans. B. include both autotrophs and heterotrophs. C. include both unicellular and multicellular forms. D. always reproduce asexually using spores.
The plant tissue responsible for transporting the sugars produced during photosynthesis is the Student Response Correct Answer A. xylem. B. phloem. C. stomata. D. leaf.
Birds are most closely related to which of the following? Student Response Correct Answer A. Snakes. B. Dinosaurs. C. Bats. D. Lungfishes.
Which of the following is not a vertebrate? Student Response Correct Answer A. Mammal
B. Reptile C. Amphibian D. Echinoderm
Which type of animal may possess a tube-like structure with a large central cavity, is sedentary, and lacks tissues? Student Response Correct Answer A. Sponge. B. Annelids. C. Invertebrates. D. Flatworms.
What is the term for a group that includes an ancestral species and all of its descendants? Student Response Correct Answer A. Domain. B. Kingdom. C. Genus. D. Clade.
Bacteria can possess any of the following traits except Student Response Correct Answer A. a flagellum. B. the ability to exchange of genetic material with other organisms. C. mitochondria. D. a cell wall.
Carbon moves from the abiotic world to the biotic world when Student Response Correct Answer A. an animal consumes a plant.
B. underground C. in the oceans D. on the ground surface
In their theory of punctuated equilibrium, Stephen Jay Gould and Niles Eldredge argue that Student Response Correct Answer A. "gaps" in the fossil record should be accepted somewhere closer to face value. B. species may not change for long periods of time. C. rapid change in species often occurs during speciation events. D. all of the above.
The scientific name of a species Student Response Correct Answer A. consists of two parts, the genus name and the species name. B. consists of a family name and a species name. C. is always Latinized. D. both A and C E. both B and C
Which of the features below was the first to appear in hominids? Student Response Correct Answer A. upright posture. B. tool-making. C. a large brain. D. language.
All of the following traits are heritable in humans except Student Response Correct Answer A. eye color.
B. hair length. C. shape of lips. D. hair color.
The only known infectious agents that lack genetic material are Student Response Correct Answer A. certian viruses. B. prions. C. viroids. D. bacteria.
All the organisms belonging to a single species that live in a given area make up a(n) Student Response Correct Answer A. ecosystem. B. population. C. community. D. food web.
________ are endotherms, and ________ are ectotherms Student Response Correct Answer A. Mammals; birds B. Birds; mammals C. Lizards; mammals D. Birds; lizards
Which statement regarding mammals is false? Student Response Correct Answer A. Some mammals lay eggs.
B. human. C. mosquito. D. clam.
One difference between prokaryotic and eukaryotic cells is that Student Response Correct Answer A. prokaryotic cells have a nucleus, while eukaryotic cells do not have a nucleus. B. prokaryotic cells have existed on Earth far longer that eukaryotic cells have existed. C. the DNA of prokaryotic cells exist as linear chromosomes, while the DNA of eukaryotes is a single circular chromosome. D. most of the time eukaryotic cells are smaller than prokaryotic cells.
A prokaryotic cell could have Student Response Correct Answer A. linear chromosomes. B. a cell wall. C. mitochondria. D. a nucleus.
Archea cells are eukaryotes, while Bacteria are prokaryotes. Student Response Correct Answer True False
