Exam 2 Review Pre Lecture Class History for Exam 2 Review Quiz Item Exam 2 Review Quiz Score 100 Calculated Due Tuesday October 07 2014 7 59 AM Submitted Monday October 06 2014 10 41 PM Answers 1 What can Antarctic ice core samples tell us about atmospheric CO2 levels Select all that apply CO2 ice core data confirms CO2 measurements taken directly from the atmosphere Ice cores can tell scientists exactly what plants lived on Earth centuries ago Ice cores can help scientists estimate atmospheric CO2 levels from centuries ago Nothing ice is made of H2O and not CO2 Score 1 of 1 2 Which of the following things are made in part of carbon Select all that apply certain gases in the atmosphere the glucose sugars in fruits the shells of clams and other mollusks limestone at the bottom of the sea Score 1 of 1 3 In a food web which of the below organisms converts the carbon in animal carcasses or waste back to atmospheric CO2 Select all that apply 4 Based on the energy and carbon sources of humans how would humans be fungi algae decomposers primary producers Score 1 of 1 classified as chemoautotrophs as photoheterotrophs as photoautotrophs as chemoheterotrophs Score 1 of 1 anoxygenic photosynthesis fermentation oxygenic photosynthesis aerobic respiration anaerobic respiration 5 Organisms belonging to the Bacteria branch of the Tree of Life can demonstrate which of the following processes Select all correct choices 6 An organism that oxidizes H2S to gain energy and utilizes CO2 as a carbon source to generate carbohydrates would be classified as a Score 1 of 1 chemoautotroph photoheterotroph chemoheterotroph photoautotroph Score 1 of 1 7 N2 is an end product of NH3 is an end product of anammox nitrogen fixation nitrogen fixation anammox anammox and denitrification nitrogen fixation denitrification anammox and nitrogen fixation Score 1 of 1 8 For the first 2 billion years of its history Earth s atmosphere lacked or had very little oxygen Which of the following organisms produced much of the oxygen that now makes up the current atmosphere of Earth euryarchaeota hyperthermophiles 9 The passive movement of a solute from a point of high concentration to a point of low concentration is known as cyanobacteria anoxygenic photosynthetic bacteria Score 1 of 1 solubility endocytosis active transport diffusion Score 1 of 1 10 Plant cell growth is confined to flowers within the cell walls photosynthetically active tissues meristems Score 1 of 1 11 If the two guard cells of a stoma increase their concentration of potassium K ions what will happen to the corresponding pore The pore will close preventing the diffusion of water vapor out of the leaf The pore will close preventing the diffusion of CO2 out of the leaf The pore will open allowing for the diffusion of water vapor into the leaf The pore will open allowing for the diffusion of CO2 into the leaf Score 1 of 1 12 Which of the following are produced by roots in order to increase surface area allowing for greater access to nutrients in the soil root nodules root Casparian strips root parenchyma root hairs Score 1 of 1 they respond to CO2 demand they open in response to light they respond to H2O loss they open in response to O2 Score 1 of 1 13 Stomata are key sites of information processing because Select all correct answer options 14 Terrestrial plants must maintain a balance between the need for CO2 and the need to avoid desiccation One response to these conflicting forces is that stomata close when guard cells lose water stomata close when photosynthesis causes internal CO2 levels to drop stomata open in response to O2 buildup water is actively transported into the guard cells causing stomata to close guard cells shrink from water loss causing stomata to open Score 1 of 1 15 In order to germinate seeds of many temperate zone species require a prolonged exposure to temperatures below some critical threshold This prevents germination during warm days in autumn germination beneath a canopy of plants germination during long days germination in high latitude populations but not in low latitude populations Score 1 of 1 16 Which of the following statements is true of the seeds of both gymnosperms and angiosperms Select all correct choices Seeds from both plants contain a haploid 1n male gametophyte Seeds from both plants contain a triploid 3n endosperm Seeds from both plants contain a diploid 2n embryo Seeds from both plants contain a diploid 2n seed coat Score 1 of 1 17 Which of the following statements is true regarding the fruits produced by angiosperms Select all correct choices Fruits are typically derived from the seed coat Fruits ripen in response to far red light Fruits ripen in response to ethylene Fruits are typically derived from the wall of the ovary 18 What would the flower look like of an angiosperm that relied on water to disperse 19 True or False Through breeding the dominance of petal color for a particular flower was shifted from red to white This change would affect the relationship between the plant and its pollinator Score 1 of 1 pollen large small colorful odiferous Score 1 of 1 True False Score 1 of 1 20 In temperate zones tree species must tolerate extreme seasonal temperature variation In addition to a requirement for exposure to low temperatures many trees require a heat sum of temperatures exceeding a certain threshold before resuming vegetative growth in spring Waiting for the heat sum would help to ensure that Daylength is sufficiently long Insects are available for pollination The risk of frost has passed Water is available for transpiration Score 1 of 1 History for Exam 2 Review Quiz Item Exam 2 Review Quiz Score 60 Calculated Due Tuesday October 07 2014 7 59 AM Submitted Monday October 06 2014 9 19 PM Answers 1 What can Antarctic ice core samples tell us about atmospheric CO2 levels Select all that apply Ice cores can help scientists estimate atmospheric CO2 levels from centuries ago Nothing ice is made of H2O and not CO2 Ice cores can tell scientists exactly what plants lived on Earth centuries ago CO2 ice core data confirms CO2 measurements taken directly from the atmosphere Score 1 of 1 2 There is evidence that increased levels of CO2 in the atmosphere may increase Earth s surface temperature How might this affect the spread of mosquitoes and malaria Select all that apply Warmer temperatures may increase the habitat range of mosquitoes Warmer temperatures may result in malaria cases in new regions Warmer temperatures will
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