The Living World Questions and Answers

You streaked bacteria onto the EMB Eosin Methylene Blue plate The bacterial streak is metallic British Racing green You bacteria is E coli gram positive a bacterium that is able to ferment mannitol a bacterium that CANNOT ferment lactose O Staphylococcus

you inoculated an urea agar slant with bacteria The tube does not change color after incubation ie stayed beige your bacteria has which enzyme tyrptophanase decarboxylase NONE of the choices given you are looking at a negative result Ophenylalanine deaminase Ourease

Which ingredient allows you to literally see detect the fermentation of the sugar mannitol into acid in the MSA mannitol salt agar plate O methyl red Ophenol red bile salt lactose Ohigh amount of salt

which of the following is NOT a part of aseptic technique flame the opening of the test tube after you put the bacteria into it flame your loop wipe your table with disinfectant before and after the experiment flame the opening of the tube containing the bacteria before but NOT after picking up the bacteria

What are simple microscopes O Those that are composed of 2 lenses Those that are not composed of lenses Those that are composed of 1 lens only Those that are composed of 4 lenses

How could cognitive abilities be advantageous for elephants in the wild

Which sentence describes the speciation of three distinct zebra species from a common ancestor OA The common ancestor could not adapt to changes in the environment and went extinct allowing new species to arise OB Interbreeding between the common ancestor and other species produced hybrids which formed new species over time C Interbreeding between different populations of zebras increased genetic variation allowing new traits to evolve D Populations of zebras became isolated reducing the gene flow and they developed different traits over time

Which plant phylum exhibits double fertilization Explain what two things are fertilized and what the end products of double fertilization are

Which two examples would likely result in an increase in biodiversity A The extinction of a rare orchid found only in the Hawaiian Islands B Sudden environmental change that produces conditions a species cannot survive C The speciation of Gal pagos finches due to reproductive isolation D Environmental change that is gradual enough to allow individuals to adapt

Te being ds energy In the lesson you compared two types of biofuels to gasoline Based on what you learned in the lesson evaluate how well the use of biofuels can reduce human impacts on natural systems Here is a link to the CourseArc lesson for your reference this will not activate the score center https nvccsd coursearc com content sci geoscience s2 m515 solutions reducing human impacts natural systems Describe the system s being impacted by fossil fuel emissions and how the emissions affect the system s use your life cycle assessments from the lesson to help you Identify the scientific knowledge and reasoning on which using biofuels instead of fossil fuels is based Provide both the quoted evidence and the source reference s Describe how using biofuels may help in stabilizing the natural system you identified as being impacted What are the tradeoffs of using biofuels Support your answer with evidence from the graphs and images in the lesson You should include the graphs and images along with your explanations How might this solution be refined to better reduce human impacts Evaluate how well the refinement you suggested will affect the stability of the natural system being impacted and the foncibility of the rafinomont cost reliability available technology research

Question 3 of 10 Which of the following is an example of temporal isolation OA Groups of toads that mate at different times of year O B Groups of flowers that attract different pollinators OC Groups of fish that live in unconnected bodies of water OD Groups of peacocks with slightly different mating calls RESSAN GEANTRAG SUB

What does the science root word synthesis mean A to make incorrectly fake B to spin quickly C to build or make

95 of people that are 65 and older live independently not in a nursing home or other type of institution O True False

Certain species of parrot cannot be brought to the United States to be sol as pets What is the name of the legislation that makes this illegal Red List O O O Endangered Species Act ESA Migratory Bird Act SITES

Converting a prairie to a farm field is example of exotic species climate change habitat loss O O O overharvesting

6 points Change the view to a flat map and turn on the gridlines Click on the Sahara Desert near the Tropic of Cancer Click compare and select the tropical rain forest biome in Southeast Asia at about the same latitude Use your findings to answer the following questions What temperature patterns do you find if any Select all that may apply Both biomes have similar temperature differences betweer the average minimum and maximum The temperature of the tropical rain forest tends to be warmer The biomes have seasons at opposite times of the year Summers periods of the warmest temperatures are May August January is the coolest month for each biome

A mass extinction is defined as O O O a boundary between geological periods a loss of 95 percent of species an asteroid impact a loss of 50 percent of species

6 8 points On the Biome Viewer return to Grand Prairie TX Match each century with the Anthrome listed for Grand Prairie s temperate grassland biome 1800 1700 1900 2000 Dense Settlements Croplands Seminatural Wildlands

Which of the following is the standard classification for a low birth weight infant 6 1 2 pounds or less 5 1 2 pounds or less 3 1 2 pounds or less 4 pounds or less

Every pregnant woman needs to gain weight in her pregnancy even if overweight obese True False

A mass extinction is defined as a boundary between geological periods a loss of 95 percent of species an asteroid impact a loss of 50 percent of species

Excess of any macronutrient results in fat O True False

wer the BMR except Starvation Malnutrition O Age Smoking

If dietary intake was poor deficiencies in fat soluble vitamins would occur before water soluble vitamins O True False

Why do you think scientists would be interested in studying cognitive behavior in animals

Theis why a speech is needed occasion subject O topic

Define the two terms in your own words Absolutism Divine Right 6S 617 verib

Select the correct answer from each drop down menu Dina is a paleoclimatologist She wants to review documents to assess climate data for her hometown Which historical documents should Dina examine in order to assess this climate data Ding should examino

16 Use the diagram on the right to answer the following questions What is the Law of Superposition At SITE 1 list the layers from youngest to oldest At SITE 2 which layer is OLDER W or Y A Site 1 Key Trilobite Bird Ammonite Fish 2007 Shell Dinosaur 1 Plant Site 2 Mammal Extrusion lava Intrusion Layer B at SITE 1 is the same age as what layer at SITE 2 Explain how you know this and use proper vocabulary y Explain why Trilobite fossils are only seen in one layer between the two sites yet all other fossil species can be found in numerous layers

1 Why is forensic anthropology an important part of forensic science What does this area add to the investigation of crime

11 The activity of N2RB gene declines in older mice and causes a decline in learning ability Some have suggested that this is beneficial because it means older mice cannot forage as efficiently as they once did which frees up resources for the next generation How is this hypothesis based on group selection

In 1998 a team of authors at the Royal Free Hospital and School of Medicine in London reported on a group of 12 pediatric patients with gastrointestinal disorders but who otherwise appeared healthy all of whom developed autism as young toddlers In eight of these patients their parent or physician reported that the onset of autism symptoms was within approximately one week of receiving the measles mumps and rubella MMR vaccine What can you reasonably conclude from the data described here O The MMR vaccine causes autism in 2 3 of toddlers with gastrointestinal disorders Autism may be correlated with gastrointestinal disorders O The MMR vaccine causes autism in toddlers with gastrointestinal disorders O The MMR vaccine causes autism

A Mediterranean diet characterized by primarily plant based foods olive oil as the primary source of fat low intake of saturated fat moderate intake of fish low to moderate intake of dairy products and wine consumed in low to moderate amounts has been hypothesized to have health benefits In a 2009 French study 1340 individuals ages 65 and older were followed over a five year period during which they were given a series of cognitive tests and asked to complete surveys about their diet drug and alcohol use and other factors Over the five year study the decline in cognitive scores of individuals whose diets were most similar to the Mediterranean diet was only 35 as large as the decline in the other individuals These results indicate that O A Mediterranean diet is inversely correlated with cognitive decline in French people over the age of 65 O A Mediterranean diet improves cognitive performance OA Mediterranean diet is more healthy than other diets All of the above

The six icons shown here are part of a model for understanding global change What does the set of icons represent in the model Population Agricultural Deforestation growth activities reforestation A B Habitat loss Invasive restoration species Urbanizatio human inputs to the global energy budget human causes of changes to global systems human activities that are independent of global change the effects on human society of changes to global systems

When can genetic drift occur B D It can occur in small populations when alleles increase or decrease by chance over time It can occur in large populations when alleles increase or decrease by chance over time It can occur in large populations when alleles increase or decrease as a result of natural selection over tim It can occur in small populations when alleles increase or decrease as a result of natural selection over tir

Which of the following statements on ecosystem stability is correct B C D Higher biodiversity in an ecosystem provides better stability Multiple keystone species are important to ecological stability Ocean ecosystems are far more stable than terrestrial ecosystems Higher animal to plant ratios provides the most stable environment

Most carbohydrates in the human body are A B OD not easily absorbed in the bloodstream used as building blocks of proteins used as catalysts for reactions in cells consumed as a source of energy

When a species becomes resistant to a particular pesticide what happens to the percentage of individuals who survive pesticide treatments in each new generation It decreases A B It stays the same It increases It cannot be predicted since each generation is unique

In pea plants the allele for tall stems is dominant over the allele for short stems If two heterozygous tall plants are crossed what percentage of the offspring would be expected to have the same phenotype as the parents A 2596 B 50

Unlike nonliving things all living things are made of A atoms O O D energy cells water

Which of the following is found in a cell membrane O microtubules A D B C nucleic acids phospholipids mitochondria

The modern classification system is based on A B C D putting organisms into categories based on where they live putting organisms into categories based on how they reproduce putting organisms into categories based on similar characteristics putting organisms into categories based on the type of food they eat

Which quote from Thoreau s Walden is the best example of the transcendentalist idea of the eternal nature of the soul A 20 Do not trouble yourself much to get new things whether clothes or friends B 23 Only that day dawns to which we are awake more day to dawn The sun is but a morning star C 19 The fault finder will find faults even in paradise

Question 8 Points 3 A man carries a bag of 10 N to a distance of 1 km The work done by the man is O 10 kJ 10 MJ O 10J O 1000J

What is the SI unit of work O meter O newton O watt O joule

Question 6 Points 1 Among the list power output which bulb would produce brighter light when switched ON 40 W 10 W 60 W 100 W 40 W O 10 W 60 W O 100 W

1 Joule is equal to O 1 Nm O 1 m O 1Nm O 1 N m

Question 2 If the directions of the force applied on an object and the motion of the object are the same then the work done is O negative O positive Ozero O infinity

If the speed of an object is reduced by half its kinetic energy becomes halved doubled one eighth of the original one fourth of the original

10 Explain why the coefficient of relatedness is important for biologists studying the evolution of altruism