Biomolecules Questions and Answers

13 3 points What patterns do you observe between the location of dead zones and human footprints Dead zones are fewer in areas highly impacted by humans Dead zones are more numerous in areas highly impacted by humans Dead zones are more numerous in areas least impacted by humans Dead zones appear ONLY where humans live along the coasts

3 points How is the degree of human influence represented on the graph Green represents least human influenced areas moving to orange red and black as human influence increases Green represents the greatest influenced areas moving to orange red and black as human influence decreases Green represents the largest human populations moving to red and black as human population decrease Green represents the smallest human populations moving to orange red and black as human populations increase 000

Dietary fat can work as a promoter causing cancer cells to grow faster A True B False

Mark all the following genetic disorders that result in an outwardly normal phenotype A Triplo X Karyotype B Klinefelter Syndrome C Turner Syndrome XYY Karyotype

Mark all of the following that are common mutagens and can work as initiators in cancer A Nitrosamines B Anthocyanins C Benzopyrenes D Lycopenes

The normally code for enzymes proteins that are important in anabolism or catabolism A promoter gene B structural genes C regulatory gene D operator gene

Explain how the absorption the ocean counterbalances warming B of carbon dioxide by the impact of global IUXX 2 X 4

Enzyme that helps in unzipping separtion of DNA double helix strands by breaking hydrogen bonds is Helicase ODNA polymerase I DNA polymerase III

The inner leaflet monolayer of the human erythrocyte membrane consists predominantly of phosphatidylethanolamine and phosphatidylserine The outer leaflet consists predominantly of phosphatidylcholine and sphingomyelin Although the phospholipid components of the membrane can diffuse in the fluid bilayer this sidedness is preserved at all times How is this sidedness preserved An increase in cytosolic calcium concentration prevents membrane phospholipids from crossing the bilayer O Scramblases move phosphatidylcholine and sphingomyelin to the outer membrane The energetic cost of moving the highly polar sometimes charged head group through the hydrophobic interior of the bilayer is prohibitive Floppases move phosphatidylethanolamine and phosphatidylserine to the inner leaflet so that phosphatidylserine does not trigger apoptosis

A phospholipid molecule is diagrammed below and the four diagrams A D below represent cross sections of spherical structures composed of phospholipids Which of these structures is most likely to form when a phospholipid is vigorously dispersed in water A C A A B B OC C OD D H O H O H O H O B D hydrophilic water loving polar head group hydrophobic water fearing non polar tails H O H O H O H O

Which of the following substances will be least likely to diffuse through a pure phospholipid bilayer membrane that contains no proteins OA Nat B HH OC D H C C O H II HH H 0 0 H

Errors can occur in any of the following processes that occur in eukaryotic cells 1 DNA replication DNA DNA 2 RNA synthesis DNA RNA 3 Protein synthesis RNA protein TRUE or False mistakes occurring in DNA replication DNA DNA are passed onto a daughter cell A TRUE B FALSE OC I don t know

The NeuN gene is normally transcribed in neurons but not in liver cells This difference could be because A the sequence of DNA bases within the NeuN promoter is different in neurons and liver cells OB DNA bases within the NeuN promoter are chemically modified in liver cells but not in neurons OC a transcription factor that activates NeuN expression in neurons is absent in liver cells OD a protein present in both cell types activates NeuN transcription in neurons but not in liver cells

The molecular structure shown below is representative of which of the five major classes of building block molecules monomers that make up macromolecules and membranes i cells O O O 0 008282828 A fatty acid B amino acid C nucleotide OD phospholipid OE monosaccharide

A protein kinase can act as an integrating mechanism among cell signaling pathways if it A phosphorylates more than one substrate OB catalyzes its own phosphorylation C is activated by two or more proteins in different signaling pathways D initiates a phosphorylation cascade involving two or more protein kinases

An Individual needs a daily supplement of at least 319 units of vitamin C and 240 of vitamin E and agrees to obtain this supplement by eating two foods I and II Each ounce of food I contains 22 units of vitamin C and 15 units of vitamin E while each ounce of food II contains 11 units of vitamin C and also 30 units of vitamin E The total supplement of these two foods must be at most 40 ounces Unfortunately food I contains 24 units of cholesterol per ounce and food II contains 20 units of cholesterol per ounce Find the appropriate amounts of the two food supplements so that cholesterol is minimized Find the minimum amount of cholesterol amount of food I amount of food II minimum cholesterol OZ oz units

1 2 3 4 5 T F There are 5 people that play on a team on the court T F Basketball is considered an invasion game T F When dribbling you want to keep your eyes down T F Dr James Naismith founded basketball in 1891 T F High school varsity games are played with 8 minute aun

Hockey There are 2 A players on the court and goalie s on occurs at the beginning of the game or half after and after a goal is scored 3 The game begins at the line 4 During a faceoff each team must wait until the ball touches the 5 You must give the room when he she receives the ball

Fast growing cities lacked all of the following except O Decent sanitation O A formal police force

The lack of city government and services led to the Intercity fighting Unprecedented wealth and prosperity Abandonment of cities for the countryside Growth of slums and poor living conditions

1 What causes the jellyfish to fluoresce and glow in the dark 2 List two of the tips to avoid cross contamination during the experiment 3 Why was Arabinose sugar added to one of the nutrient agar plates 4 Why are the plates inverted before being placed in the incubator

in your opinion do you think we need a second Civil Rights Movement in the U S t

Are You Prepared Pack enough food Portable and dense foods such as nuts trail mix dried fruit and peanut butter sandwiches are best

Consider the following chemical equation NH3 0 NO H O The equation is unbalanced Which of the following is the correct balanced equation OA B C OD NH3 20 NO 6H O 4NH3 502 4NO H O 4NH3 50 4NO 6H O NH3 50 NO 6H O

know that the glucose polysaccharides starch and glycogen are storage fuels in plant and animal cells respectively But when onsider the benefits of storing low molecular weight metabolites in polymeric form instead of monomeric form I think

How does taking notes during a lecture support active listening A It helps you anticipate what will be said B It helps you focus your attention C It helps you like the subject better D It helps you evaluate the credibility of the speaker

Methylene blue Sudan IV Phenol red Question 5 1 point the bacteria in the yogurt the non photosynthetic plant cells

In your letter you need to explain how the theor of evolution is supported by evidence Be sure include the 4 pieces of evidence for evolution a well as an example of each

2 chemical vention setge molecole 3 NOW on the terge combo model you have buil Lipids Work in groups of 4 You can salvage part of your carbohydrate model to make a model of a glycerol molecule Have the 3 others in your group of 4 each make a 6 carbon fatty acid You ll end up with 3 fatty acids and a glycerol Demonstrate combining the 3 fatty acids with the glycerol Instructor approval What kind of reaction is this What is are the product s What are the differences between saturated fats and unsaturated fats What is are the product s of this digestion reaction called Write out the chemical reaction using molecular formulas

After examining the DNA of different organisms which of the following did Erwin Chargaff conclude about the four bases O a A T and C G b A C G T O c A C and G T O d A T C G

Combining the work of other scientists with their own research Watson and Crick discovered that two strands of DNA join together to form a n O a nucleotide Ob X in a circle O c double helix d covalent bond

What holds base pairs together a hydrogen bonds Ob sugar phosphate backbones Oc pairs of double ringed nucleotides O d nitrogen carbon bonds

g and drop the terms to label the diagram depicting a phospholipid molecule Hydrophilic region Hydrophobic region Phosphate Glycerol 11P O P O CH CH CH O C 0 C 0 O O Saturated fatty acid Unsaturated fatty acid

listonira Which of the following is a valid scientific argument Measurements of sea level on the Gulf Coast taken this year are lower than normal the average monthly measurements were almost 0 1 cm lower than normal in some areas These facts prove that sea level rise is not a problem A strain of mice was genetically engineered to lack a certain gene and the mice were unable to reproduce Introduction of the gene back into the mutant mice restored their ability to reproduce These facts indicate is essential for mouse reproduction that the gene A poll revealed that 34 of Americans believe that dinosaurs and early humans co existed because fossil footprints of each species were found in the same location This widespread belief is appropriate evidence to support the claim that humans did not evolve from ape ancestors O This winter the northeastern US received record amounts of snowfall and the average monthly temperatures were more than 2 F lower than normal in some areas These facts indicate that climate is occurring ge

Biology Time Linit 0 35 00 6 38 9 Time Left 4 Listen Background for question 5 The following graph appeared in a scientific article 1 pesticides on tadpoles in their natural environment No pesticide Malathion Roundup No pesticide Roundup Malathion No pesticide Malathion Beetles No predator Newts Fig 2 Total survival of Leopard frog tadpoles living in ponds with 2 pesticides added Malation and Roundup and 2 tadpole predators present newts and beetles Roundup

Biology Area D Assessment Time Left 0 34 03 799 789 4 8 10 2 Time days While growing vegetables in your backyard you noticed a particular kind of insect eating you a rough count see data below of the insect population over time Which graph shows the best representatio your data Insect Population number 7 Sara Jan Noort 16 60 123 8 IKK Il No of insects in population

TX For The Golgi apparatus is the site of carbohydrate breakdown stores modifies and packages proteins is composed of stacks of membranous vesicles that are continuous with one another Ostrings together amino acids to produce proteins

Which of the following correctly describes the mechanism of PTS transport Enzyme II and HPr transfer a phosphate group from ATP to Enzyme I Enzyme I phosphorylates an incoming sugar molecule as it crosses the membrane Enzyme I and HPr transfer a phosphate group from ATP to Enzyme II Enzyme II phosphorylates an incoming sugar molecule as it crosses the membrane X Enzyme I and HPr transfer a phosphate group from phosphoenolpyruvate PEP to Enzyme II Enzyme Il phosphorylates an incoming sugar molecule as it crosses the membrane Enzyme II and HPr transfer a phosphate group from phosphoenolpyruvate PEP to Enzyme I Enzyme I phosphorylates an incoming sugar molecule as it crosses the membrane

Which may act as viral vectors Mark all that apply Biological vectors O Flies Ticks O Mosquitoes Question 2 How are viral diseases categorized according to patient conditions for treatment Mark all that apply O By using the International Classification of Diseases Current Procedural Terminology Healthcare Common Procedure Coding System 0 25 pts

19 Scanning means that the reader O A focuses on the text s conclusion O B looks for words to catch his or her attention O C searches for the most important details O D reads every single word of the article

3 An antonym for the word melt is O A boil O B soften O C thaw O D freeze

The molecule shown here contains four functional groups Highlight all the atoms of the four functional groups but do not highlight any bonds When you click on each atom it will change color To des atom click on it again Before you submit check that you have not selected any bonds View Available Hint s H HHH OHH LI III I H S C C C C C C N IIIIII HOHHHH OIPHO H H 9 i

The most widely considered concept of speciation is the Biological Species concept This is the idea that almost everyone hears in school that a species is a group of individuals that can interbreed with other members of the group but do not breed outside the group This concept argue for all the following except Places and emphasis on reproductive isolation b Can t easily be applied to extinct species Can t be applied to asexual species d It is based on species having a defined set of phenotypic traits not shared with any other group a c

In the podcast the salamanders defy our ideas of what makes a species They are very unusual because a Males will breed with any female They show no mate choice b They are mostly asexual parthanogens and require no males to produce offspring c They are all females and steal entire genomes from any males in the area They have fuew genetic barriers d They are so rare we cannot figure out how they mate Males are rare and thus one male dominates all the mating opportunities e

Phosphate NH NH Ribose HOCH KHA HN OH H OH H NH Deoxyribose 0 2 6 O P O HOCH OH 0 HN H OH OH Purine 0 H CH NO A 02 1 Pyrimidine H Re

What is the main difference between the diathesis stress model and the gene environment correlation model rGE DS emphasizes a threshold situation which leads to activation of the diathesis while rGE does not include the concept of a threshold DS is a simpler model of explaining how stress can trigger a disorder while rGE recognizes how genetics either create or drive a person towards a stressful environment that triggers the diathesis rGE and DS models are basically the same but one model was developed in the U S and the other was developed in Europe as explanations for etiology rGE emphasizes biopsychosocial elements that all interact together while the DS model is focused only on genetic inheritance of increasing the risk for a mental disorder

1 4 with histone proteins are part of the structure 5 is the study of 2 are segments of 3 determines the actual expressed characteristics of the organism called the is made possible by each code for a particular characteristic the full set of all the coding information for all the characteristics of an organism is the

uses on only two other objectives ective automatically focuses on all the other objectives Focusing on one objective automatically focuses on only one other objective Question 9 1 point Listen A cover slip is optional for wet mounts True False

The term that is used to describe the position of something that is relatively close to the point of attachmen O a Medial O b Dorsal O c Lateral O d Proximal O e Distal

20 Which of the following is most likely fake news OA A news site that lists all of its contributing authors OB An article that tries to sell you miracle weight loss pills OC Content from a website that ends in edu O D An academic resource listed in a bibliography