The Living World Questions and Answers

What is the unit of measurement for optical density OD Omg cm O O O mol L Cm OD is dimensionless

A DNA has too much protein contamination the OD260 OD280 ratio of the sample will be 1 8 lower than 1 8 higher than 1 8 lower than 0 8

The OD value of a DNA sample is 0 6 Its concentration will be 0 30 ng ml 30 g 30 g ml 60 g ml

In order to correctly load a micropipette with fluid you must Add a tip and push the plunger to the first stop Add a tip and push the plunger to the second stop Push the eject button Turn the white wheel on the pump upward

You should always fill up the solution to its volume at the beginning of making a solution even though you have to adjust the pH True False

What is the unit of absorbance which can be derived from Beer Lambert s law No unit 1 gm 1 cm cm 1 mol cm 1 Question 10 1 point 1 Listen A DNA sample gave a purity ratio of 1 That means that the sample is Pure DNA Contaminated with proteins Contaminated with lipids Contaminated with carbohydrates

Molarity is defined as the number of moles of solute that are dissolved in ImL of solution True False Question 4 1 point Listen Kate made a solution that needs to be at a pH of 12 The solution has a pH of 5 8 What should Kate do Add drops of HCl until the solution pH reads 12 Add drops of KOH until the solution pH reads 12 Add more water until the solution pH reads 12 Add more solute until the solution pH reads 12

O 0 5 1 0 0 1 0 0 1 1 0 0 01 1 0 Question 8 1 point Listen false The absorbance of a sample as measured by UV visible spectrometry is inversely proportional to the concentration of the sample such that as the concentration increases the absorbance decreases True or True

Kate made a solution that needs to be at a pH of 12 The solution has a pH of 5 8 What should Kate do Add drops of HCl until the solution pH reads 12 Add drops of KOH until the solution pH reads 12 Add more water until the solution pH reads 12 Add more solute until the solution pH reads 12

There are 100 1000 10 1 ml in 1 L

The best tool to measure 146 l solution is O P 200 P 2 P 1000 P 20

Breccia is well sorted O True O False

How would you describe streptococci O cluster of circles Ochain of circles Ochain of spirals

Which of the following structures controls what enters and exits a cell O capsule Ocell wall O flagella O plasma membrane

Which of the following structures serves as the site for protein synthesis O plasma membrane O nucleoid O inclusions ribosomes

1 Interpret these data and explain how they relate to natural selection and the definition of evolution 3 points

According to Lamarck geological forces acting today are the same ones that have been acting in the past O True O False

Evidence that the surface of a mountain was once under the sea includes the presence of marine fossils on the mountain True False

Which of the following traits is a synapomorphic trait of the frog the platypus and the polar bear Great While Shark Salmon Common Frog Platypus Bony skeleton Claws or nails Bony skeleton O Gives birth to live young Fur Polar Bear Fur Claws or nails Live young

In the phylogenetic tree below character 8 is possessed by the MRCA of D E and F A B C D E F G H True False 8

Phylogenetic trees are based on what type of evolutionary relationship s O Autapomorphies O Analogies O Synapomorphies O Pleisomorphies

1 Emily Carr s artwork focused primarily on capturing the perspective of O A warriors OB women and children O C the dominant culture O D Indigenous communities

Your research or guiding question should do what Select ALL that apply Should be of interest to you Should be a topic that can be analyzed lead to new insights Should be researched in scholarly peer reviewed journals

You need to learn more about using citation styles such as APA or MLA to cite the sources you used in a research paper Which type of library guide should you try to find O Research

types of sources that you will be able to find and that will be appropriate for your specific assignment O False O True Question 20 0 25 pts True or false When thinking of the information timeline scholarly journals would be placed on the weeks later after the event O False

Why is What is reality TV a bad research question Select the BEST answer below Everyone hates reality TV programs O It simply defines reality TV and will not lead to any new conclusions or insights Reality TV programs are meant as entertainment not as research topics No one cares about reality TV and any value they might have for society

Which of the following best describes a research or guiding question O A compilation of your research O Another description of your topic A specific aspect of the topic you want to learn more about O An assigned topic

Which strategy below is the BEST one to generate a research question that provokes interest and can be answered with research O Look at class readings including your textbook Ask other students in your class Ask your instructor Use the journalistic approach of asking What Why When Where Who or How questions

Which of the two research questions below is more complex and will lead to a stronger conclusion and resolution O Why doesn t the NFL do something about the number of players experiencing concussions and memory loss and depression in later life O Now that the long term effects of repeated concussions are known what should the NFL do to protect players and ensure their long term health following their playing days are over

True or False The Library One Search and Google Scholar options in the search box can both be used to find scholarly journal articles on your topic O True O False

ure 1 of 1 What is the magic number in Figure 1 You could try to guess the magic number but you would probably use up all your tries before getting the correct answer Notice the View Available Hint s link underneath the question statement for this part Selecting this link will open up a list of hints that will guide you to the correct number View Available Hint s Hint 1 How to approach the problem Hint 2 What is a magic number

Conversion therapies following the Kinsey Reports can be broadly categorized into which of the following categories O Pathological Physiological Reparative Cognitive O Mind Body O Social Legal

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Identify the top argument for using Bisphenol A with scientific support and the top argument against using BPA with scientific support Then decide whether you support continued use of BPA in the US or not total of 3 paragraphs

Bacteria have organelles membrane bound structures in the cytoplasm O True O False

Which two taxonomic categories are used for establishing the binomen O family O genus O class Oorder species

The dog is more closely related to the lizard compared to the fish O True O False

From the choices select three criteria used to define life in general maintains homeostasis reproduces occupies space responds to stimuli

EX A group of students tested to see if the acidity of water affected pea plant growth They followed a logical method and performed their experiment once using controls and experimental groups Their results supported their hypothesis Experiment 2 A group of students tested to see if bacteria growth in water was affected by acidity They used controls and experimental groups They repeated their experiment several times and found the results were the same Which experiment most likely has greater reliability and why

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Now that you ve learned about the requirements of a personal narrative essay it s time for you to write your own Remember that a personal narrative should focus on the feelings memories and experiences of the author you and should tell a story about the author s life Your final draft should contain between 750 and 2 500 word You should not write about a longer time frame For example instead of writing about why owning a pet is memorable focus only on the day you brought your new pet home For the topic Explain why a certain sport is your favorite you must focus only on what makes the sport your favorite You should not include general information rules or history of the sport without including why the items make the sport your favorite For the topic Explain why a certain sport is your favorite you must select an activity that involves physical exertion and skill Activities such as reading

Describe the mechanisms by which human population growth and resource use causes increased extinction rates

7 Know how to use a periodic table What is a period What is a group Trends in the elements on the table 8 What is an atomic number atomic mass 9 When is an atom most stable 10 How to calculate the number of neutrons in an atom 11 Metric system conversions a How many L in 53ml b How many cg in 2500 mg c How many Km in 3000 m 12 Use dimensional analysis to calculate metric conversions a How many grams are in 563 mg b How many centimeters are in 432mm c How many kiloliters are in 72 ml 13 Draw the Lewis dot diagrams and Bohr models for a Potassium C Lithium b Magnesium d Calcium

Match the types of energy with their correct description Match 000 Term Internal Energy Gravitational Potential Energy Latent Heat Energy Kinetic Energy Definition A The amount of energy released or absorbed when matter changes state B The energy of motion as in the movement of an entire system C The random motion of molecules within an air parcel D The amount of energy an object has based on its height above the Earth s surface

3 Microsatellites Phylogenetic tree use of DNA sequences to determine relatedness among populations a Using a phylogenetic tree how can you determine which populations are closely related Ecology geography how do biotic abiotic factors affect where species live What is the difference between biotic and abiotic factors a b Identify which factors have the greatest impact on animal plant populations

ter how to calculate net energy available Subtract the energy consumed from the energy Produced ve energy stored as large moleculed in their eccells that they can Thracgntout the day b How do you determine how much energy you have to hunt a What is resting metabolic rate Ahiter c How do you determine how much energy you will get from hunting a prey item d What are the benefits to living in a group versus living alone

Let s say you know someone who always just makes stuff up just to sound smart Ugh so annoying But you know enough to know when it s just not true What part of the following charade just doesn t add up Which part of the narrative below is false So I was on my first dig last summer in Europe where I found a fossil ape skeleton It had arms and legs that were roughly the same length We dated the site to about 65 million years ago late Devonian using biostratigraphy of the associated animals The dig leaders are letting ME name the new ape after my dog ok so team leaders are definitely not going to let this person who just showed up name a new fossil ape but what else is wrong Check your answer in section 5 Biostratigraphy can t date that far back in time O There are no fossil apes during the late Devonian or 65mya Ancient fossil apes aren t going to have arms and legs that are similar in length like a monkey

scientific racism bad science In addition to the damage done to communities around the world a legacy of scientific racism also hindered our understanding of the fossil record in which of the following ways Check your answer in Section 5 O Researchers long thought that humans were not fully modern with art and jewelry until they researched Europe during migrations because they hadn t studied the African fossil or archaeological records in much detail Researchers initially dismissed the African fossil record in favor of the fake Piltdown Man found in England all of these O When Neanderthals were first discovered they were interpreted as degenerated and invading Cossacks rather than any kind of hominin

In humans birth tends to be difficult Babies need to grow as large of a brain as they can before Check your answer is section 4 O they can no long fit through the pelvis O both of these answers neither of these answers mom s metabolism can no long support their growth