Biomolecules Questions and Answers

1 What do you see What is the Stress type Compression Tension or Shear What is the Strain type Elastic Plastic or Brittle What is the Fault tyne 2 Normal Reverse Thrust or Strike

Listen AOTD What is a result of nematodes adaptation to cryptobiosis They cannot move from one place to another easily They can only live in specific places They are more prone to being eaten by predators They have increased resilience to tough environments

Based on your knowledge of the polarity of water molecules which is most likely regarding the solute molecule depicted here identified by an arrow

Lobe fins locomote by paddling their fins rather than using exclusively their tail O True O False

Jawed vertebrates as a generalization get their food by O eating marine plants O burrowing in the sediment for small animals O filter feeding through their gill slits O active predation in the water column

Explain the major role of each of these lipids Phosphatidylserine

QUESTION 9 People who have the O blood type possess 1 an enzyme that adds an N acetylgalactosamine to the end of the oligosaccharide chain on RBC membrane glycolipids 2 an enzyme that adds a galactose to the end of the oligosaccharide chain on RBC membrane glycolipids 3 an enzyme that adds phospholipids to the end of the oligosaccharide chain on RBC membrane glycolipids 4 no enzymes capable of attaching galactose or N acetylgalactosamine to the end of the oligosaccharide chain on RBC membrane glycolipids 01 02 0 3 04 O 1 and 2 QUESTION 10 What kind of membrane protein penetrates into the hydrophobic part of the lipid bilayer O integral protein O lipid anchored protein O peripheral proteins phosphatidylcholine

Complete the sentences about acids bases and pH using the words provided 1 A n Click to select 2 A n Click to select 3 A n Click to select 4 As the hydrogen ion concentration of a solution decreases the pH Click to select As the pH of a solution increases the concentration of Click to select ions increases The pH of a solution is defined as the Click to select of the hydrogen ion concentration 7 As the hydrogen ion concentration of a solution increases the pH Click to select 5 acts to increase the hydrogen ion concentration of a solution acts to decrease the hydrogen ion concentration of a solution acts to maintain a relatively stable concentration of hydrogen ions in a solution 6

How many significant figures are in the measurement 56 0 mL O a 1 O b 2 O c 3 O d 4

Question 1 7 points When writing answers to a quiz a formal lab report or even a 5 paragraph essay it is important to use the traditional symbols and abbreviations On the HTML editor the box you type into there is a button with a plus sign Expand the downward facing chevron to the right of the plus sign to see the menu containing symbols emojis and other items Expand the downward facing chevron to the right of the U to see the menu containing the superscript or subscript font options For the items below provide the symbol 1 Degree 2 Micro 3 Alpha 4 Beta 5 Percent Retype these items using the superscript or subscript 6 H O 7 103 When we do labs or write papers in this class please be sure to use these types of symbols and font options

Prokaryote Choose Eukaryotes DNA circular usually DNA linear molecules chromosomes with histone proteins DNA squere usually

Which structure is NOT a supramolecular complex Select one a ribosome b mitochondrion Oc chromosome O d plasma membrane

Which of these is not a function of lipids Select one a long term energy storage b hormonal function c catalysis d insulation

What is the energy carrier in the ATP molecule Select one a sugar b bond between phosphate and sugar c phosphate bonds d adenine

ces Which one of the four recorded motor unit action potentials MUAPs corresponds to the smallest number of muscle fibers contracting 1 2 Multiple Choice O O 3 4

Match the fauna wave with when it persisted Cambrian fauna Paleozoic fauna Chrose started in the Ordovian decimated in late Perm started in the Cambrian but then slowly diminis started in early Mesozoic persists today

One of the following fixatives is good for lipid fixation O a Acetic acid O b Osmium tetroxide Chloroform Formalin O c O d d

Please tell me this isn t happening exclaimed Sayen I m so sorry said Dr Sheng your grandfather s foot is infected Because of his diabetes he has poor circulation and by the time he finally sought medical attention it was too late We ll have to amputate the foot before the infection spreads further Don t you dare blame this on my grandfather Do you know why he didn t seek medical attention He doesn t have good health insurance He can t afford to run to the doctor every week I realize that There is nothing else we can do We have tried several antibiotic combinations The bacteria causing the infection are resistant to all of them He is stable for now but we re running out of time Ok I get it Can you please hold off on the surgery I want to talk to a friend Sayen turned to her grandfather Achak I have a friend who told me that his aunt s leg was saved using some weird treatment Let me ask him Achak looked at his granddaughter I know you want to help my child But it s too late No it s not please just let me talk to Daviti Achak stared out of the window of his hospital room Sayen saw him give just the slightest nod She raced out of the room to find a spot where her cell phone would have adequate reception Daviti It s Sayen I remember you told me how they saved you aunt s leg something about a virus They re about to amputate my grandfather s foot but his favorite thing to do is walk and climb I want to save his foot Yes My brother is a researcher at Eliava the Georgian bacteriophage institute They have the largest collection of bacteriophage in the world Before there were antibiotics treating wound infections with phage was more common But since the introduction of antibiotics research into phage treatment isn t done as much anymore I took my aunt to Georgia and they saved her leg How did they do that They took samples from her wound and cultured the bacteria to figure out what types of bacteria were causing the infection Then they cultured the bacteria mixing them with some of the bacteriophage they had success with in the past They made a mixture of a few of the bacteriophage that formed plaques on the culture and they applied that to my aunt s wound Every couple of days they would take new samples and try again Why did they do that asked Sayen Because sometimes the bacteria can become resistant to the phage It s much less likely if they use a mixture of phage but they wanted to keep track Her wound started clearing up by the next day It did take a while but they managed to save the leg by cleaning the wound regularly and applying mixtures of phage It s called phage therapy Do you think I can send them a sample from my uncle s leg in the mail No you cannot do that It s against the law to send bacteria through the mail Especially since they are obviously resistant to antibiotics The only way to do this is for your uncle to travel to Georgia But my uncle can t travel he s too sick Thanks Daviti I m going to talk to the doctor Sayen returned to the room Dr Sheng was still there just finishing up his examination of her grandfather She relayed to him what she had just learned Your uncle doesn t have time to travel to Georgia As far as I know there is no laboratory in this country that has such an extensive selection of phage and it is really really hard to get FDA approval for this type of therapy Well I want to try Who should I call first

20 Please list and explain the 4 different levels of proteins structure Protein Structure

1 Identify the following metabolic reactions from the list provided FeS H S FeS2 H chemical energy 2H S CO2 light CH O H O 2S H O CO light CH O 20 CH O 20 H O CO chemical energy 6CH 0 2C3H6O3 chemical energy fermentation chemolithotrophy anoxygenic photosynthesis oxygenic photosynthesis aerobic respiration

BIU Question 2 ET T Would it have been possible to determine the identity of the unknown if a whole egg was used instead of only the albumin Explain you answer noting that egg yolks contain lipids and proteins H 0 Word s T T 0 Word s

Question 2 Did the Benedict s test of reducing sugars for the glucose and milk samples indicate similar sugar content Reference Data Table 1 and Photo 1 in your explanation T T 0 Word s

Please list and explain the functions of the 5 main types of proteins 18 allilled al Jig so

Question 8 This diagram shows an reaction Free energy time products reactants

2 Although they had been talking online for six months John felt some trepidation about meeting Luisa face to face Past girlfriends had called him insensitive and one had even claimed he was thoughtiess In this context what is a synonym for insensitive O A Understanding O B Complex OC Inconsiderate OD Receptive

on 1 Match each reagent to the macromolecule it identifies Benedict s reagent tt Biuret s reagent IKI solution Sudan III reagent Dische diphenylamine Reducing sugars Starches Lipids Proteins DNA IIIII Question 1

nique let you isolate two mixed species from a mixed species culture b How can you be sure you have a pure culture of one species And why is getting a pure culture important c What would happen if you didn t sterilize the loop between streaks 1 3 bni 20 d Discuss the biology of the one additional species of bacteria we worked with in this part of the lab Where are they found and what role if any do they play in human health and disease glom

Taq polymerase is extracted from O a Saccharomyces cerevisiae O b Escherichia coli Oc Thermus aquaticus d Bacillus cereus who lives in hot springs

In sequential order which are the three steps of PCR O a Denature DNA Extend DNA Anneal Primers O b Anneal Primers Denature DNA Extend DNA O c Denature DNA Anneal Primers Extend DNA d Extend DNA Anneal Primers Denature DNA

O The sequence of events is important O Each stage of processing relies on the prior stage O All of these O Once all elements have been processed a decision is made for action or inaction Question 7 The steps of COGNITION DO NOT include O Reception of data O Formation of internal representations of data received from INTERNAL or EXTERNAL sources O Decisions made on how to respond to varying INPUT DATA 1

Snowball earth occurred O about 3500 Ma O about 100 200 Ma O about 700 600 Ma C about 2500 M

The Ediacara fossils show which kind of preservation O original remains O permineralization O replacement molds

Which of the following factors have led to the rise in health care costs

Listen Please list describe the structure and provide and example for the three main subgroups of carbohydrates What is an isomer

Which polysaccharide bond cannot be broken by mammalian enzymes that normally digest polysaccharides O a 1 4 glycosidic linkages OB 1 4 glycosidic linkages O a 1 6 glycosidic linkages OB 1 6 glycosidic linkages O phosphate ester linkages QUESTION 11 Which interaction is most important in enhancing the solubility of macromolecules in water O hydrophobic interactions O nonpolar covalent bonds OH bonds O van der Waals forces O Both hydrophobic interactions and nonpolar covalent bonds QUESTION 12 The presence of polarized bonds is importance in determining molecular reactivit

In a living organism where are ionic bonds most likely to be found O in the cytoplasm O between DNA strands O deep in a protein s core where water is excluded Oon the surface of a protein Oon the surface of a lipid QUESTION 41 Free radicals may form when a covalent bond is broken such that each atom that had participated in the bond retained one of the two shared electrons that comprised the bond O True O False QUESTION 42 Antioxidants are able to destroy free radicals in the test tube

The pleated sheet is characterized by orientation of OH bonds parallel to OH bonds perpendicular to O ionic bonds parallel to O ionic bonds perpendicular to Opeptide bonds perpendicular to QUESTION 38 the molecular axis bears a partial positive charge when covalently bonded to an electronegative atom QUESTION 39 Nonpolar molecules contain the charged regions that would attract them to water molecules and are hydrophobic O True

Functional groups often behave as a unit and give organic molecules their physical properties chemical reactivity and QUESTION 49 What bond is responsible for the branch points in glycogen and amylopectin O a 1 4 glycosidic linkages OB 1 4 glycosidic linkages O a 1 6 glycosidic linkages OB 1 6 glycosidic linkages O 3 5 phosphodiester linkages QUESTION 50 Why do sugars tend to be highly water soluble O because they have only a few hydroxyl groups because of their large numbers of hydroxyl groups O because of their large numbers of sulfhydryl groups O because of their large numbers of methyl groups in aqueous solution

Chaperones help proteins to reach their proper folded state O True O False QUESTION 44 The most stable atoms and thus those that are typically nonreactive are the atoms that have O equal numbers of electrons and protons O equal numbers of electrons and neutrons full inner shells O full outer shells O all covalent bonds QUESTION 45 Which of the following is a nucleotide O phosphate ribose O adenine deoxyribose sugar nitrogenous base

your answer what are the two chemical ingredients for hematite what is the source s for these ingredients what kind of rock BIFs are classified as In your discussion be sure to make direct references to the phot below of a BIF sample

Please list the 4 large biological molecules For each molecule identify its monomer and explain its typical structure

Determine the DNA purity ratio of the next samples and explain if we would typically consider this to be a pure sample or not 0 45 8 Sample A OD260 0 76 and OD 280 9 Sample B OD260 0 161 and OD280 0 084

The size of the impactor was estimated to be about O 1 km in diameter O 0 1 km in diameter O 10 km in diameter O100 km in diameter

The profession of Walter Alvarez the primary investigator in this project is O geology O astronomy

What name is given to the following reaction sucrose water fructose glucose hydrolysis hydrogenation glycolysis dehydration reaction 1

E1 Listen How does RNA differ from DNA ORNA is double stranded DNA is single stranded RNA is a polymer of amino acids DNA sa pomera RNA contains uraci DNA contains the in RNA G pairs with T in DNA Gpals with C int ther

Unsaturated fats are missing a fatty acid tail contain only single bonds in their fatty acid t are hydrophilic are typically liquid at room temperature

Please list the 4 large biological molecules For each molecule identify its monomer and explain its typical structure

estion 41 4 Listen Please list the 4 large biological molecules For each molecule identify its monomer and explain its typical structure

Electron microscopy is particularly adapted to the observation of bacteria because They move very fast and it is not easy to take a picture Thir organelles are small and very close to each other They possess no organelles Electrons can cross their thick cell wall Most bacterial cells are very small and hard to see with a light microscope