The Living World Questions and Answers

In order for a population to evolve the population must reproduce sexually all members of the population must have identical phenotypes natural selection must be acting on the population all members of the population must have identical genotypes its members must have heritable genetic variation Question 3 1 point Listen irms that possess homologous structures probably

ring a study session about evolution one of your fellow students remarks The giraffe stretched its neck while reaching for higher leaves its offspring inherited longer necks as a result Which statement is most likely to be helpful in correcting this student s misconception D Disuse of an organ may lead to its eventual disappearance Only favorable adaptations have survival value Characteristics acquired during an organism s life are generally not passed on through genes If the giraffes did not have to compete with each other longer necks would not have been passed on to the next generation Spontaneous mutations can result in the appearance of new traits

Unit Test 2 Active 3 5 6 7 8 10 TIME REMAININ 01 20 47 A scientist hypothesized that oxygen atoms from both carbon dioxide and water are used to make glucose during photosynthesis However experimental results using oxygen isotopes showed that all of the oxygen from the water ended up in the oxygen molecules that were produced None of the oxygen from water was found in glucose What should the scientist do to best gain scientific understanding of this topic O Analyze the results and change the experimental methods to retest the hypotheses in a different way O Discard the faulty results that do not support the original hypothesis and repeat the experiment using the same methods O Analyze the procedural errors that took place in the experiment and summarize these in a conclusion statement O Repeat the experiment and adjust new data to support the original hypothesis

it reasonable to assume that dinosaurs some of which are direct ancestors of birds might share some characteristics with modern day birds

The second paragraph of the Declaration of Independence establishes general principles about the rights of man and the role of government What is the most likely reason that Jefferson included this section We hold these truths to be self evident that all men are created equal that they are endowed by their Creator with certain unalienable rights that among these are life liberty and the pursuit of happiness That to secure these rights governments are instituted among men deriving their just powers from the consent of the governed A It expresses the premises on which he draws his conclusion OB It introduces a point of agreement before addressing points of conflict C It helps maintain a neutral tone by speaking in generalities rather than specifics D It explains why he feels insecure about the colonies being under British rule

How do ions form ionic bonds View Available Hint s lons of opposite electrical charges are attracted to each other to balance the charges Two atoms come together to share their electrons One atom swaps all of its negative electrons for all of the other atom s positive protons lons of the same type are drawn together because they are attracted to their own kind Submit

A During alternation of generations the gametophyte generation goes through to produce gametes binary ficcion B meiosis C mitosis

Which type of bond results in the transfer of valence shell electrons from one atom to another lonic Polar Covalent Nonpolar Covalent All of the above Question 3 1 point Listen Carbon is electropositive electronegative

Starting at the beginning drag and drop the phases of the Scientific Method in order from left to right First step manipulation and analysis of data statement of a hypothesis reporting of the concl usions of the study observation of some phenomenon collection of empirical data Rese Last

Which of the following is the LEAST important characteristic of a good hypothesis View Available Hint s O Hypotheses must be testable O Hypotheses must be correct predictions O Hypotheses must be based on measurable describable facts O Hypotheses must not be anthropomorphic

1 Sorting exercises require you to place objects into different categories or bins 2 A bin can remain empty but you must place all objects 3 To start over click Reset 4 Before you submit your answers you can rearrange the objects by dragging them to new bins 5 When you are satisfied with your answers click Submit Correctly classify each of the given food items as either a fruit or a v Drag the appropriate items to their respective bins View Available Hint s avocado Fruits apple banana table from a botanical perspective If you need help click View Available Hint s potato Vegetables tomato carrot Reset Help

Listen A taxon that includes a common ancestor all descendants of that ancestor and no other organisms is considered to be O polyphyletic Omonophyletic Omonogamous paraphyletic

What is structure 25 on the drawing below COOR ectoderm endoderm blastopore blastocoel 25 26 space hollow 27 28 hollow space 29 hole

seedcracker finches from Cameroon small and large billed birds specialize in cracking soft and hard seeds respectively If long term climatic change resulted in all seeds becoming hard what type of selection would then operate on the finch population O directional selection stabilizing selection O No selection would operate because the population is in Hardy Weinberg equilibrium disruptive selection

The fossil records do not necessary reflect the true biodiversity

HOW WE SEE THE INVISIBLE WORLD customized Drag and drop each statement to determine the type of slide preparation treatment it is involved in Wet Mount Categorize options by drag dra Heat Fixing Chemical fixing Uses a slide warmer Uses a coverslip Terminates tissue degradation Uses formaldehyde Microorganisms are killed Used to view living organisms

The trp operon is a repressible operon found in prokaryotes The operator sequence in a specific bacterial cell contains a mutation that stops the repressor protein from binding to the operator Which of the following correctly identifies how the mutation described would affect the transcription of the trp operon A B C D Tryptophan will bind to the repressor to activate the repressor but the repressor will be unable to bind to the operator so transcription will occur Tryptophan will bind to the repressor to inactivate the repressor so the repressor can not bind to the operator Tryptophan will bind to the repressor to inactivate the repressor but due to the muta tion the repressor will still be able to bind to the operator Tryptophan will bind to the repressor to activate the repressor and the repressor will

Which of the following statements are true concerning posttranscriptional modifications L Spliceosomes remove exons from the transcript and splice together the introns II A 5 cap is added to provide an attachment site for ribosomes during translation III A poly A tail is attached to the 3 end of the transcript N Both the 5 cap and the poly A tail protect the transcript from degradation A B I and IV I II and III C II and III

Charles Darwin proposed the theory of biological evolution by natural selection Darwin de layed publishing his work for several decades while he gathered additional evidence to sup port his theory because he feared the reaction of the public and the Church of England After determining that selective breeding of domesticated species can be used as evidence that groups of organisms are capable of change he then proposed that natural popula tions can change as well Which of the following describes evidence Darwin used to support his theory of natural selection Select all that apply A B C Adaptations to specific environments increase an organism s ability to survive and reproduce Individuals in a population are essentially identical to each other Favorable traits within a population will accumulate over generations desire to survive

Abiogenesis is the process by which living organisms first arose from inorganic materials An explanation for the origin of life must account for the formation of biological molecules such as nucleic acids and proteins Which of the following best describes how scientists have tested hypotheses about form ing the first biological molecules A B C D by dating the oldest known fossils to determine the first living organism by observing interactions of inorganic molecules in today s atmosphere by studying other planets in the solar system to learn about the history of Earth by simulating the predicted conditions of early Earth in a lab

The peppered moth Biston betularia comes in two varieties The typica form is white with black spots and was prominent in England prior to the Industrial Revolution while the car bonaria or black variety was seldom seen A century later the carbonaria is the dominant phenotype and typica is less than 2 percent of the peppered moth population Which of the following explanations best describes the evolution of the peppered moth in post industrial England A B C D Environmental changes due to air pollution created a situation where the typica variety was more likely to be seen and eaten by predators making carbonaria variety more fit for the new environment Air pollution caused a unique mutation in the typica variety which caused its offspring to present phenotypically as carbonaria in subsequent generations Due to air pollution from industrial coal burning the typica variety died off allowing more resources for the carbonaria variety Predators which were reducing the population numbers of the carbonaria variety prior to industrialization moved out of the citior dun

When organisms decompose they become food for decomposers such as bacteria fungi and earthworms These decomposers recycle dead plants and animals into chemical nutri ents that are released back into the soil air and water Which of the following correctly describes the role of decomposition in the carbon cycle Select all that apply A B C D remains contain carbon which will become stuck in the soll and can never enter the car bon cycle again remains contain carbon but all of the carbon is released as gas during the decomposi tion process remains contain carbon that can eventually become fossil fuels which can be burned for energy remains contain carbon that becomes stored in layers of sediment which eventually be orale

A specific gene has two alleles a dominant allele G and a recessive allele g The frequency of allele G is 0 55 If the population is in Hardy Weinberg equilibrium with respect to the gene then what is the expected frequency of genotype Gg A 0 303

Otters live in kelp forests and eelgrass beds and feed on crabs The food chain for the inter actions between organisms in the same ecosystem as the otters can be seen below A food chain of a specific ecosystem A algae on eelgrass B C Which of the following would be the most likely reason for an increase in the sea slug population a decrease in the crab population an increase in the eelgrass population eelgrass the introduction of nonnative invertebrates sea slug crab sea otter

The cladogram below shows shared characteristics among four different plant taxa Acladogram with four plant taxa mosse A B C embryo and xylem only fern seeds and wood only Based on the cladogram above ferns and pines share which of the following traits embryo flowers seeds and wood only pine xylem seed wood oak flower

Fathead minnows a type of fish species release a pheromone when their skin cells be come damaged A group of researchers placed pike a predator of fathead minnows in a choice chamber and released the minnow pheromone at one end of the chamber The re searchers observed that the pike oriented themselves toward the end of the chamber where the pheromone was released Which of the following questions would best guide a follow up investigation about the role of pheromones in pike locating prey A B C D Can fathead minnows detect pheromones released by pike Why do pike prefer to prey on fathead minnows rather than other minnow species Do pike have natural predators in their habitat How do pike determine that the pherd

Part 4 Independent practice Fill out the five elements of a short story response sheet for The Story of an Hour Describe examples of elements from the story Analyze these elements Why are they relevant How do they contribute to the story Element Setting Plot

During the Jacksonian era Americans knew more about what was going on than any other general population anywhere largely due to the large number of cable news channels O the prevalence of stump speeches O the prolific use of cartoons to convey information to Americans who were illiterate O the large numbers and cheap prices of newspaper and magazines

The most famous purveyor of gothic themed literature during the Jacksonian era was Edgar Allen Poe O Henry Wadsworth Longfellow O Herman Melville O Nathaniel Hawthorne

Despite tremendous economic changes in the decades before the Civil War most Americans were still farmers and most farms were still small O True False

According to Alexis de Tocqueville s Democracy in America what was the chief cause of American democracy s success near universal white suffrage O the separation of church and state high literacy rates an optimistic view of humanity that encouraged community involvement

The many of whom were the Jacksonian era s reformers rejected the doctrine of the trinity believing that God exists in only one person O Unitarians Deists Trinitarians Secularists

Which of the following was not the subject of a reform movement during the Jacksonian period the elimination of imprisonment for debt O public education temperance transcendentalism

Which of the following is true of state banks at the close of the War of 1812 O There were 300 in operation O They stimulated the economy by making loans to railroads manufacturers and merchants O They contributed to the development of the second party system in American politics O They provided Andrew Jackson with a scapegoat to blame for the Panic of 1819

name whose writing in title The first major fiction writer to exploit the literary potential of the American frontier was author s both romanticized the wilderness and conveyed the loss many Americans felt when the became aware of the crude fashion in which the frontier was being settled James Fenimore Cooper Leatherstocking Tales O Nathaniel Hawthorne The House of Seven Gables Herman Melville Typee and Omoo O John P Kennedy Swallow Barn

Which college university admitted both women and black men to its student body in the 1850s O Oberlin College O Harvard University O University of Pennsylvania William and Mary

Which of the following best completes this sentence Because of technological changes the growth of industrial production and improved transportation women began to work outside the home in the industrial sector more and more goods such as soap textiles and men s clothing became commercially available many men rejected women s efforts to turn back time through secular and religious reform O all of the above

What famous female novelist had this to say about which gender was more inclined to be an effective teacher If men have more knowledge they have less talent at communicating it Nor have they the patience the long suffering and gentleness necessary to superintend the formation of character Harriett Beecher Stowe Catharine Sedgwick Margaret Fuller O E D E N Southworth

Which of the following human activities might result in secondary succession Scuba diving in a restricted coral reef Volunteering to plant trees in a forest ecosystem Allowing an unattended campfire to start a forest fire O Adding fertilizer to a grassland to help the plants grow BOER spony

Which type of succession occurs when communities form in an area that was previously uninhabited by organisms Primary succession Secondary succession POSSIBLE

Communities within ecosystems are established through the process of O Commensalism O Parasitism Succession O Symbiosis

An ecosystem consists of all the living and nonliving things that exist and interact in a specific area O True O False POS

The lytic reproductive cycle of viruses includes attachment entry domination assembly and release A division B translocation C mutation

Question 1 of 5 In which sentence is the point of view most clearly subjective OA The groom froze in place wondering if he had made a huge mistake OB Mr Gutierrez wrote an equation on the board and Amy raised her hand O C Handel wrote some of the most famous works of classical music ever D People pushed and shoved to get inside the store where the deals waited SUBMIT

Which sentence best shows the narrator in this passage is unreliable The soccer game was tomorrow But because of my knee injury last week my mom wasn t letting me out the door much less out to play soccer But I m completely fine Mom I said There s nothing wrong with my knee I walked back and forth to show her I was fine I ve always walked like that I told her when she said I was limping OA I walked back and forth to show her I was fine B But I m completely fine Mom I said OC But because of my knee injury last week my mom wasn t letting me out the door much less out to play soccer D The soccer game was tomorrow E I ve always walked like that I told her when she said I was limping

Not until was invented were scientists like able to see what he Yan Leeuewenhoek

A The use of scientific names such as Diceros bicornis is a method of categorizing biodiversity that can be understood regardless of what native language one speaks B C

Solve the following problems Remember to 1 ID your variables 2 write the formula 3 show your work 4 give an answer and 5 put units on your answer 1 With what force will a football offensive lineman hit a quarterback if the lineman has a mass of 102 kg and it is accelerating at a rate of 2 m s for 3 seconds 2 What is the mass of a falling apple assuming no air resistance as it hits the ground with a force of 294 N Remember that an object falling towards the ground has an acceleration of 9 8 m s 3 What is the acceleration of a shot put if it has a mass of 5 50 kg and hits the ground with a force of 75N

1 Identify the morphology of each bacteria shown I 11 1 3

By the end of the eighteenth century England s American colonies were primarily important to the motherland for the wealth that could be extracted from them True False