Ecology - Organisms & Population Questions and Answers

7 Jarek has heard from different villages and organizations the methods used to help solve their food problem Based on the food recovery hierarchy which strategy is the most preferred to impact world hunger to the greatest degree O a industrial uses using oils and fats for fuel O b feeding hungry people donating to food banks O c feeding domestic animals with food scraps O d composting making nutrient rich soil O e source reduction reducing food waste

What natural elements does this creation myth attempt to explain Check a the ocean land the universe crops people RETRY

What direct impact do introduced species have on an ecosystem A B D Decrease in the amount of pollutants Prey on or crowd out native species causing a decline in population numbers Increase the carrying capacity of an ecosystem for native species Increase the rate of biomagnification caused by pollutants

Which of the following is not directly part of a person s ecological footprint A B Oc C The amount of food and water consumed Transportation and energy needs The amount of children a person contributes to the growing population Amount of waste produced

Kin Selection is the idea that O cooperation is limited to potential mates O mating with related individuals will be selected against Okin fruits are more colorful and thus color vision was naturally selected for O relatives and kin will be treated preferentially thus potentially helping to pass on shared genes

As an electron moves closer to oxygen in the electron transport system the electron s free energy increal es stays the same equilibrates

Use the following diagram to match the questions to the correct answers Oxidation Fermentation Test Procedure Source Biolife E Which test supports positive facultative anaerobic utilization of dextrose Which test tube is negative for fermentation of dextrose Which test tube pair is indicative of non saccharolytic capabilities What pH reagent is added to the O F test media Choose Methyl Red Green tube with oil Bromothymol blue Yellow O F tube without oil only Green tube with oil and blue tube without oil Yellow O F tube with and w o oil Phenol Red Choose

Depth m 1 000 2 000 A chemist is studying dissolved gases in the ocean She graphs her data as shown below 3 000 4 4 000 Lessons 0 1 Dissolved Gasses in the Ocean CO 44 0 2 Assessments 3 2015 science kennesaw edu 4 CO 5 46 48 50 52 Concentration ml l Gradebook 6 4 000 8 000 12 000 Email 21 Depth ft Tools Explain the trend shown in dissolved oxygen and carbon dioxide versus depth and then predict where organisms that rely on high oxygen concentra

characteristics

Give an example of how technology has influenced human population growth

The wave length of a wave is a The distance between disturbances b How large is the disturbance c How destructive the wave will be d The waves frequency

The recessive alleles for mahogany eyes m and ebony body e identify two autosomal genes on the third chromosome of Drosophila melanogaster When females heterozygous for these genes were crossed with mahogany eyed ebony bodied males the following classes and numbers of progeny out of 1000 were obtained mahogany eyes ebony body 319 mahogany eyes wild type body color 176 What is the distanced between the m and eb genes Wild type eye color wild type body color 311 Wild type eye color ebony body 194 19 4 map units 31 1 map units 31 9 map units

Cytoskeletal elements are found in O b archaea a bacteria c eukaryotes e a b and c d b and c only

The accompanying data represent the monthly rate of return of a certain company s common stock for the past few years Complete parts a and b below Click the icon to view the data table a Determine and interpret the quartiles The first quartile is Q Round to four decimal places as needed The second quartile is Q Round to four decimal places as needed The third quartile is Q3 Round to four decimal places as needed Interpret the quartiles Choose the correct answer below OA The first quartile is the lower bound of plausible monthly returns and the third quartile is the upper bound of plausible monthly returns Any monthly returns outside of these bounds are outliers The second quartile represents the most common monthly return OB The first quartile is one standard deviation below the mean or average monthly return the second quartile is the mean and the third quartile is one standard deviation above the mean OC Of the monthly returns 25 are less than or equal to the first quartile 50 are less than or equal to the second quartile and 75 are less than or equal to the third quartile O D All monthly returns within one standard deviation of the mean are contained in the first quartile all monthly returns within two standard deviations of the mean are contained in the second quartile and all monthly returns within three standard deviations of the mean are contained in the third quartile b Check the data set for outliers Select the correct choice below and if necessary fill in the answer box to complete your choice OA The outlier s is are Type an integer or a decimal Do not round Use a comma to separate answers as needed

1 Genetic Engineering Here s an idea for treating advanced melanoma the most serious kind of skin cancer genetically engineer white blood cells to better recognize and destroy cancer cells then infuse these cells into patients The subjects in a small initial study of this approach were 11 patients whose melanoma had not responded to existing treatments One outcome of this experiment was measured by a test for the presence of cells that trigger an immune response in the body and so may help fight cancer The mean counts of active cells per 100 000 cells for the 11 subjects were 3 8 before infusion and 160 2 after infusion Is each of the boldface numbers a parameter or a statistic

Question 12 Match the column of the bacterial example to its importance in bioremediation Alcanivorax borkumensis Genera Pseudomonas Genera Rhodococcus 0 25 pts Choose Choose Degrade aromatic compounds found in oil into carbon dioxide Their surfactants solubilize hydrophobic substances in oil to access degradation by other microb Degrade HUB harmful algal blooms to remove the water toxicity

Question 10 What one carbon molecule is produced when carbon dioxide is used as the final electron acceptor in anaerobic environments Methane Methanogens Methanogenesis 0 0 25 pts Carbon dioxide gas

To evaluate the competence of your bacteria you did a transformation using 0 01 ng of DNA If 1 10 of the transformed cells were plated on the LB agar plate and 350 colonies were observed after an overnight incubation at 37 C what is the competence of your competent cells 3 5x103 colony forming units ug 3 5x104 colony forming units ug 3 5x105 colony forming units ug 3 5x106 colony forming units ug 3 5x108 colony forming units g

connecting 5 You visit a florist to buy a flower arrangement For every 3 pink flowers the places in a vase he puts in 7 white flowers a Does the relationship between pink and white flowers represent a constant rate relationship Explain why or why not b Is the relationship between pink and white flowers an example of direct variation How do you know c What is the constant rate of change between pink and white flowers in the arrangement 1 If you plotted the points given by pink flowers white flowers on a coordinate plane and connected those points what would the shape of the graph be

1 A population of organisms will only grow exponentially if A resources are unlimited C resources are limited B they emigrate often D they do not compete

A single gene test cross is conducted to determine the genotype of a pea plant that shows the dominant phenotype for seed shape R round r wrinkled If all offspring of the cross show the dominant phenotype then the genotype of the unknown parent is most likely RR

1 0 0003285 GL 2 0 035 dL 3 0 00012633 Kg 04 0 352 TL 5 6 0 573 mm 7 2 360 284 642 hl 0 00000033432 Gg hL hL ag ML g dam PL Pref exa peta tera giga meg kila hect dek dec cent ml

evelop a 700 to 1 050 word evidence report in hich you Include a summary of your chosen health care environment including the type of facility the type of patients and the facility size Describe 3 quality standards that align with your chosen agency organization Describe how each quality standard aligns to 1 of the domains of health Explain how each quality standard is measured for effectiveness Detail how at least 2 key quality drivers affect the quality improvement process Analyze how pursuing meeting each standard improves patient safety and quality health care

find any channel proteins specific of ATP you find that the organism can still transport potassium However you also Na is also moved out of the cell at this time and there is usually a high concentration of sodium ifl cell What is the mechanism of potassium transport in this bacterium 3 pts A Group translocation B Diffusion C Symport Antiport 10 You have isolated a bacterium from the rumen of a cow and wish to know how it transports glucose into the organism is grown in media in the presence and absence of inhibitors of ABC transporters The the cell You perform an experiment that shows uptake of radioactively labeled glucose is equal when concentrations of major ions such as potassium and sodium do not change in concentration inside the cell as glucose is taken up You know that the concentration of glucose is low in the environment and so is higher in the cell than in the environment What is the mechanism of glucose transport in this cell 3 pts A Group translocation B Diffusion 11 You are studying gut microbes and have several in culture Your first step in characterizing these microbes indicate most have two lipid bilayer membranes separated by peptidoglycan There are also porin A Gram negative B Gram positive C Archaea D Mycobacteria C Antiporter D ABC transporter 12 You are studying life forms in extreme environments and you have discovered a microorganism with cardiolipin hopanoids and ester linkages in the membrane It also has teichoic acids galactans and phenolic glycolipids in the cell wall In addition it has a porin similar to OmpA This microorganism is most likely a type of 2 pts A Mycobacteria B Gram positive C Gram negative D Archaea 13 You have isolated two novel archaea that you name M tardis and M palustre Both have a proteinaceous S layer and no pseudomurein cell wall Based on your knowledge of Gram staining predict how these microbes will stain and for which type of bacteria they might get confused 2 pts A Pink and Gram positive B Pink and Gram negative e Purple and Gram positive D Purple and Gram negative 14 In order for septation to occur which process must finish first 2 pts A Transcription B Translation C DNA Replication D Cell Wall Synthesis

The phospholipids of the plasma membrane are arranged as a bilayer because 000 the phospholipids are hydrophobic the phospholipid tails are hydrophilic whereas the heads are hydrophobic the phospholipids are hydrophilic the phospholipid heads are hydrophilic whereas the tails are hydrophobic

Question 16 of 25 16 This road sign means ONE WAY No right turn Drive only in the direction of the arrow

The pH in a lake is 6 what is the concentration of hydrogen ions 06 none of the choices are correct 0 000001 O 10 8

Iron Fe Chloride CI Zinc Zn Oxygen O Magnesium Mg Sodium Na One of the 4 most common 1 3 Present in trace amounts only 2 3 Not one of common 3

Sauved Organism name Krill Phytoplankton Sperm whales Killer whales Storm petrel King penguins Royal penguins Crabeater seals Directions Fill in the empty boxes of the table below and draw the food web and trophic pyramd based on the information gathered in the table Include the sun in your food web the sun gives off 500 000 units of light radiant energy May need to draw the food web first to figure out the trophic levels and energy at each level Fish Squid Crab Weddell seal Leopard seal 2 3 What it eats Highest trophic levels are at the top Arrows point from the eaten to the eater depicts the transfer of energy from the body of the food to the consumer Phytoplankton Photosynthesis Penguins squid seals Penguins seals Krill Squid fish Squid fish Krill Krill phytoplankton Phytoplankton krill Krill squid fish Krill penguins Trophic level s Primary consumer Producer Secondary or tertiary Energy stored 13 513 00 units Draw your food web diagram in the space below or on the back page wwyou trophic pyramid

Match the objective to this paragraph Gloves can be of several different materials such as nitrile or latex Each material is resistant to some classes of chemicals but not to others Gloves must be chosen by considering the chemicals used in a particular experiment especially organic solvents Sometimes very heavy protective gloves must be used when working with corrosives such as a base bath 1 Differentiate between hazard and risk 3 State the general effects that corrosives have on the skin 4 State the general hazards associated with flammables commonly used in the laboratory 6 Explain the statement The dose makes the poison 7 Explain why reducing the scale reduces the risk 50 Describe the various types of eye protection and the specific protection that each provides 51 Describe and discuss skin protection measures e g clothing gloves tools 52 Describe the appropriate materials and construction for a laboratory coat 53 Explain why glove material and construction must be considered when selecting proper PPE 55 Select and wear appropriate PPE while in the laboratory

Dr Red studies how Millenial and Generation X workers differ in their approach to the office finding that even with similar job responsibilities Gen X workers prefer to tackle their projects alone without interference while Millenial workers prefer more collaboration this is actually a thing you can Google it This finding reflects the lifespan perspective principle of plasticity multidisciplinary study historical and cultural embeddedness multi directions

Dr Lamp s philosophy on development includes the notion that children are basically little blobs of clay that you can shape into whatever you want them to be when they grow up which was a primary belief of John Locke Arnold Gesell

Which of the following is true of the evolution of animal phyla and animal body plans The majority of animal body plans and phyla evolved over a comparatively short timespan in the Cretaceous period around 200 million years ago in an event paleontologists call the Cretaceous Explosion Animal body plans show a slow but constant progression with new body plans and new phyla evolving since the Proterozoic Era 2 5 billion years ago until relative recent times Animal body plans and phyla diversified during the Jurassic period and through the Cretaceous period from around 200 million years ago until 65 million years ago when the Cretaceous Paleogene extinction event halted their progress The majority of animal body plans and phyla evolved over a comparatively short timespan in the Cambrian period around 540 million years ago in an event paleontologists call the Cambrian Explosion 1 point Many protostomes appear quite similar at first glance with several groups exhibiting worm like morphology However this superficial similarity can be misleading as worms are present in both major groups of protostome the lophotrochozoa and the ecdysozoa Which of the following features is most likely to be present in a segmented worm a lophotrochozoan and absent in a round worm an ecdysozoan spiral cleavage during development the blastopore develops into the anus during gastrulation the blastopore develops into the mouth during gastrulation radial cleavage during development 03

6 3 The energy that primary consumers use for metabolism and growth comes directly from which of the following sources O organic compounds synthesized by producers O organic compounds released by decomposers O organic compounds stored in carnivore tissues O organic compounds absorbed from the environment

6 3 Bacteria that live in the digestive systems of cows help break down the 1 point plants that cows eat providing nutrients to cows The digestive systems of cows offer a safe environment in which the bacteria can live and reproduce Which type of relationship exists between the bacteria and the cows O commensalism O mutualism Oparasitism O predation

1 pc 6 1 A population of mosquito larvae is living in a large pond Mosquitofish are a type of fish that eat mosquito larvae Which of the following describes a direct effect on the population of mosquito larvae when mosquitofish are introduced to the pond Odeaths increase Obirths decrease emigration increases immigration decreases

6 1 The cardinal is a type of bird Which of the following would increase the 1 point size of a population of cardinals in a forest O an increase in the birth rate of cardinals O an increase in the death rate of cardinals O increased emigration of young cardinals from the forest ecosystem O increased immigration of cardinal predators into the forest ecosystem

6 1 The graph below shows changes that occurred in the size of a population of animals over a year Which of the following is best supported by the graph Population Size 120 100 80 60 40 20 Population Sizes during One Year 0 1 2 3 4 5 6 7 8 9 10 11 12 Month 1 point O Between month 1 and month 5 the immigration rate was zero Between month 4 and month 6 a predator was introduced into the ecosystem and increased the death rate Between month 5 and month 7 the birth and emigration rates decreased and the death and immigration rates increased Between month 8 and month 12 the birth and immigration rates equaled the death and emigration rates

C A B D sig There are seven species of sea turtles in the world and six of them are classified as endangered Three species are said to be critically endangered and the hawksbill sea turtle is one of those species Sea turtles are endangered because of human activity If humans choose not to take steps to protect these critically endangered animals they will soon be extinct Every two to five years female hawksbill sea turtles return to the area where they were born to mate They leave the sea and choose an area on the beach to lay their eggs They dig a pit in the sand fill it with about 130 eggs cover it and then retreat to the sea The eggs are now on their own Humans must do something to help the sea turtles One solution is to turn off the lights on beaches where sea turtles nest Another solution is to use turtle safe lighting on the beach These red lights emit less visible light and therefore do not confuse the hatchlings Executing either of these simple actions could improve the likelihood of survival for hawksbill sea turtles After about sixty days the eggs hatch The most dangerous time of the hawksbill s life is now The hatchlings must travel to the sea before they are devoured by predators Crabs and seagulls prey on these hatchlings How do they know where to go Sea turtles are attracted to light Before electricity was invented the brightest light was the moonlight reflecting on the sea Therefore the hatchlings would simply follow the light and end up in the sea Unfortunately things are not as simple anymore Beaches have become popular places filled with houses hotels and condominiums Even at nighttime shorelines are well lit If the lights are on the hatchlings become confused and wander inland toward the bright lights As a result many die before they can find the ocean 555 1 SEQUENCE What do female sea turtles do immediately after they lay their eggs They sit on their eggs They abandon their eggs and return to the sea They cover their eggs with sand They start gathering food for the baby sea turtles to eat 2 A B C CAUSE AND EFFECT How do red lights help sea turtles People set up the red lights in a line and then the hatchlings follow the red lights from their nest to the beach The red lights emit less visible light which makes the beach darker This allows the hatchlings to follow the moonlight to the sca like they are supposed to do People set up red lights on the beach to help female sea turtles Identify the safest place to build their nest 3 FINDING DETAILS IN A TEXT When is the most dangerous time of a hawksbill sea turtle s life A B C D when the sea turtle eggs are buried in the sand when a female lays her eggs when a newly hatched sea turtle enters the sea and must learn to swim when a newly hatched sea turtle leaves its nest on the beach and travels to the sea

14 What are examples of tradition and command in a market system

Jon went on a school fieldtrip With his classmates they collected a bunch of leeches that they brought back into their classroom s aquarium They numbered each leech in order to study the way they reproduce Jon knows that leeches are a type of annelids but he does not know which kind of reproductive strategy leeches follow Help Jon and his classmates Leeches reproduce by or are budding fragmentation sequential hermaphrodites simultaneous hermaphrodites gemmulation

greatest population in 2009 1 0 5 1 0 0 5 0 5 0 1 0 5 Ireland France Spain Russia France Spain Ireland Russia

1 4 This pedigree illustrates the pattern of inheritance of X linked recessive colorblindness in a human family A couple is expecting their first child and have found out from amniocentesis results that it a boy marked What is the probability that this XY child will be color blind 1 2 00 01 O

alculations Round your answers to the nearest tenth Use the following formulas to calculate the values belov 1 Birth Rate 2 Death Rate Births Total population x 1000 Deaths Total population x 1000 3 Emigration rate Emigrants Total pop x 1000 4 Immigration rate Immigrants Total pop x 1000 5 Natural Rate ofIncrease Births Deaths Total pop 1000ORBirthRate Death Rate 6 Net Migration Rate Immigrants Emigrants Total pop 1000ORImmigration Rate Emigration Rate 7 Population Growth Rate Natural Rate of Increase Net Mi Rate 1000 x 100 Practice Statistics mlto ammal Population Babies born will have ale People died People emigrated bill teve People immigrated og or Calculate the following Values A Birth Rate B DeathRate C Emigration Rate D Immigration Rate 6 Natural increaseRate 31 850 000 1038 000 in 594 000 86 000 53 000

Usually which of the following are based on a combination of physical and pathological examinations diagnostic test results and signs and symptoms Disease controls O Disease frequencies Disease definitions Disease distributions

True or False The purpose of surveillance is to monitor aspects of disease occurrence that are pertinent to effective control True False

Which of the following a key activity of epidemiologists includes three steps developing a definition of disease instituting a mechanism to account for cases of disease within a specified population and determining the size of the population Counting

o Question 5 Reflect on the concept of health equity and its significance within Healthy People 2030 How does this framework address health disparitie among different populations

1 000 000 800 000 600 000 400 000 200 000 O 1920 O 1910 1950 1820 1830 1840 1850 1860 1870 1880 1890 1900 1910 1920 1930 1940 1950 Number of Immigrants Entering the United States 1820 1950 Quest 1 5 9

13 Describe the rate of population growth that would be expected at various parts of the S shaped curve of logistic growth