Biomolecules Questions and Answers

identify this molecule whole molecule Les Obch 9999 199 8888 8 8 8 8 8 8 8 8 1 O 3 Peptide binding cleft B 01 microglobulin 02 band

What can be said about 1 mole of Na and 1 mole of N

Lactic acid fermentation produces lactic acid Homolactic fermentation produces lactic acid Heterolactic fermentation produces lactic acid and or other compounds Alcohol fermentation produces ethanol CO Organism Fermentation end product s Streptococcus Lactobacillus Bacillus Lactic acid Saccharomyces yeast Ethanol and CO Pyruvic acid Propionibacterium Propionic acid acetic acid CO and H Clostridium Butyric acid butanol acetone isopropyl alcohol and CO Escherichia Salmonella Ethanol lactic acid succinic acid acetic acid CO and H Enterobacter Ethanol lactic acid formic acid butanediol acetoin CO and H

Sketch the molecules ATP DNA and phospholipids

Question 3 of 25 Insulin is a protein that is modified and packaged in a vesicle before being released into the body In what structure does this happen O A Ribosome OB Golgi apparatus C Nucleus OD Endoplasmic reticulum SUBMIT

Match the membrane transport process with its description Osmosis Simple diffusion Facilitated diffusion 1 Passive process used to transport large or polar molecules across the membrane using channels or carrier proteins 2 3 Passive process in which a solvent diffuses through the membrane down its concentration gradient Passive process in which lipid soluble or very small molecules diffuse through the membrane down their concentration gradient

Which of the following is FALSE regarding proteins Proteins consist of many amino acids linked by peptide bonds All proteins have primary secondary tertiary and quaternary structure Fibrous proteins are structural molecules while globular proteins are functional molecules Proteins are the basic structural material of the body and play many vital roles in cell function

Match the term with its definition 7 Atoms Matter Elements Mass 1 Pull of gravity on mass 2 3 4 Building blocks that give an element its unique physical and chemical properties Equal to the amount of matter in the object 5 Unique substances that cannot be broken down into simple substances by ordinary chemical methods Anything that has mass and

Which of the following does NOT describe a use for ATP transport work chemical work mechanical work molecular structure

Carbohydrates and proteins are built up from their basic building blocks by the removal of a water molecule between each two units addition of a carbon atom between each two units addition of a water molecule between each two units removal of a carbon atom between each two units

The dorsal body cavity houses the viscera whereas the ventral body cavity hoses the nervous system True False

Match the type of chemical bond with its description V Polar covalent bond Nonpolar covalent bond lonic bond Hydrogen bond 1 2 Chemical bond created by equal sharing of electrons 3 Attractive force between the electropositive hydrogen of one molecule and an electronegative atom of another 4 Attraction between two oppositely charged ions Chemical bond created by unequal sharing of electrons

In which quadrant of the abdominopelvic cavity is the stomach located right lower quadrant left lower quadrant left upper quadrant right upper quadrant

Expiration breathing out is how the body removes excessive carbon dioxide from the blood This is an example of excretion of metabolic waste metabolism maintaining boundaries responsiveness

The scales of the Chondrichthyes are described as being tooth like The scales are described as a spiracles b nostrils c placoid d claspers e cloaca

Eating excess sugar triggers feedback in which the pancreas releases insulin to assimilate sugar into the cells A aseptic B negative C positive D neutral

Select the best answer for the question 4 What are used by the project architect to depict different building systems and to show how they correlate to one another O A Shop drawings O B Sketches OC Preliminary O D Working drawings

9 What is the maximum safe working pressure to which you should set an oxyacetylene rig s acetylene regulator OA 300 psi OB 9 psi C C 15 psi OD 1 psi

Enzymes O alter the rate at which a reaction proceeds Oare often consumed by the chemical reaction raise the energy required for a reaction to proceed All of the above are correct

Within lipid bilayers saturated hydrocarbon tails pack less tightly than unsaturated tails Increasing the percentage of unsaturated fatty acids within a cell membrane will increase the membrane One essential component of animal cell membranes is cholesterol means that it reduces the effect of temperat the fluidity of which acts as a fluidity buffer This

Question 77 1 point Which one of the following is NOT broken down by the amylase enzyme None of these options is correct Amylose Cellulose Amylopectin Starch Sucrose

GTP binding proteins are regulated by GTP GDP binding How is a GTP binding protein switched from its inactive form to it active form The protein releases GTP and binds to a molecule of GDP The protein phosphorylates its bound GDP to produce GTP The protein hydrolyzes GTP so that it is now bound to GDP The protein releases GDP and binds to a molecule of GTP

Which statement about protein phosphorylation is TRUE Phosphorylation of enzymes will always activate them Protein phosphorylation covalently attaches a negatively charged group to a protein Regulation by phosphorylation is irreversible Protein phosphatases catalyze protein phosphorylation and protein kinases remove the modification All of these statements are true

Membrane proteins can be classified based upon how they associate with the membrane What type of membrane protein is indicated by the black arrow 3 O Peripheral membrane protein Lipid anchored protein O Transmembrane protein extracellular space cytosol

When protein is converted in the body to amino acids what is the role of water Traces of water are needed to stimulate the enzymes O Water is released by the process Water is needed for the process to break the amide peptide bond between amino acids Water is not involved only enzymes Only beef proteins need water to convert them to amino acids None of these statements is correct Question 61 1 point Dolomite is a substance sold in health food stores Select the correct statement Due to the toxic nature of dolomite it has been banned in the U S and Canada Dolomite can contain toxic heavy metals such as mercury Dolomite is a mixture of calcium and magnesium carbonate and is always purified to eliminate other elements This product is mainly magnesium sulfate and is soluble in water This substance is not a good source of calcium as it does not dissolve well in water None of these statements is correct

Which of the following can a prokaryote not do O Passive diffusion O Endocytosis O Facilitated diffusion O Active transport

Imagine a newspaper running the following headline In Toronto the divorce rate has decreased as the use of margarine has decreased What can be concluded based on this statement Removing trans fats from modern margarines has reduced the divorce rate Eating butter leads to a happier marriage There is a correlation between divorce rate and margarine consumption however dubious it might be in real life O Consumption of margarine causes people to get divorced How much margarine one eats depends on marital status None of these options is correct Question 13 1 point Which one of the following is correct Cholesterol in the diet boosts trans fats in the blood Aspirin can be used to treat hemophilia Lignans have anti cancer effects Grape seed extract increases the number of senescent cells in the body

A person who is taking the anticoagulant Coumadin has to watch the intake of foods that contain vitamin C vitamin K None of these options is correct thiamine vitamin A folic acid Question 69 1 point A diet that is 50 in fat by weight derives approximately what percentage of calories from fat 60 70 30 40 None of these options is correct

A cell consumes acetate and uses the carbon from it to make starch This must be a an pathway O Fermentation O Catabolic O Anabolic O Respiration

Works Question 9 Stability and change is one of the crosscutting concepts used in science 1 When would a scientist MOST likely use this crosscutting concept elect one O O O When looking into how long it takes for butterflies to reach their winter habitats When attempting to see which chemicals are found inside a new brand of fertilizer When investigating how the parts of an ecosystem react to intense heat When investigating the prey preferences of mountain lions living in the northeast

Green fluorescent protein GFP is commonly used in molecular technology to visually label specific cells when it is expressed The structure of GFP is shown below as a ribbon diagram Consider the thick ribbon segments forming FLAT ARROWS Which Photo credit https www rcsb org structure 60FN Each segment represents primary structure These are beta pleated sheets These are alpha helices The structures are formed by disulfide bonds between cysteines Each segment represents quaternary structure The structures are formed by hydrogen bonds between amino acids Each segment represents tertiary structure Each segment represents secondary structure Range the following correctly describe these structures Choose all that apply

Which of the following molecules is necessary for DNA replication within cells but NOT amplification of DNA via polymerase chain reaction PCR O helicase DNA polymerase O nucleotides dNTPs O primers

Black coffee has a pH of about 5 and wine has a pH of about 3 This means the hydrogen ion concentration of the wine is abou the hydrogen ion concentration of the coffee 100 times less than O2 times more than half 100 times greater than

Which of the following is NOT an element typically found in simple carbohydrates oxygen O nitrogen O carbon O hydrogen

1 John likes to make oatmeal cookies Each oatmeal cookie supplies about 67 kcal and includes 3 g of fat 9 g of carbohydrate and 1 g of protein Calculate the approximate kcal contributed by fat by protein and by carbohydrate Enter numbers only no units or symbols 1a Kcal in the cookie from fat 1b Kcal in the cookie from carbohydrate 1c Kcal in the cookie from protein 2 Each oatmeal cookie supplies about 67 kcal total Calculate the approximate percentages of total kilocalories in the cookie that are contributed by fat by carbohydrate and by protein 2a Percent of total kcal from fat 2b Percent of total kcal from carbohydrate 2c Percent of total kcal from protein kcal kcal kcal

Jestion 4 Points 1 me reaction of President Truman to the Soviet Union exploding an atomic bomb was to begin working on more powerful bomb manufacture more atomic bombs make peace with the Soviets

Items Physical State Route of Exposure Symptoms Protective Equipment First Aid Procedures Fire fighting Measures Chemical Reactivity Safe Storage Safe Disposal Environmental Ecotoxicity SDS Information

Breaking a chemical bond DOO A B C D Releases energy Gives off energy Stores energy Requires energy

Lactic acid fermentation takes place after glycolysis in the absence of A B C D ATP Carbon dioxide Glucose Oxygen

Question 2 1 point 4 Listen Which functional group is not present in this molecule HO 0 CH IT H C C OH NH H H OA amino OB sulfhydryl OC carboxyl D hydroxyl 4

Question 10 Who wrote the following quote It would be against all nature for all the Black people to be either at the bottom top or in between We will go where the internal drive carries us like everybody else It is up to the individual Points 1 Ida B Wells O Mary Terrell Zora Neale Hurston

A fatty acid is said to be saturated if there is no double bonds between carbons on the backbone O True O False

Triglycerides consist of three fatty acids attached to a glycerol water glucose carbon dioxide molecule

Which of the following is NOT considered as part of six basic nutrient groups O Carbohydrates Water Phytochemicals Protein

A COC CH CH CH CH CH B 0 H C OC CH CH CH CH CH H C C CH CH CH CH CH 0 Which of the above molecules is a polysaccharide OA OB OC OR C php D

Here are four organic molecules Molecule A CH OH H H 0 H OH H H OH OH O Molecule B H H N C COO CH OH O CH OH OH Molecule D NH What type of molecule is it Select COOH CH Molecule C nucleotide fatty acid CH CH CH Based upon their structures which of these molecules would be the least soluble in water Select CH CH CH 1 CH CH CH CH CH CH CH I CH3 D

Which of the following statements about hydrolysis reactions is correct Water is produced as a result of a hydrolysis reaction Hydrolysis reactions are energetically favorable In cells enzymes are not used or required for hydrolysis reactions Hydrolysis reactions create covalent bonds between molecules to produce larger molecules All of these statements are correct

Which of the following statements is incorrect Both sugars and fats are used as energy sources for cells The activated carrier ATP is a nucleotide O Phospholipids can form lipid bilayers membranes because they are amphipathic Nucleotides are joined together by phosphodiester bonds to form proteins All of these statements are true

What is the calibration Erlenmyer calibration difference between 2 marked values of spaces between marked values A 10 mL B 25 mL C 50 mL of this flask D 125 mL 925 100

3 CCATACGCATGGATT 5 First letter 1 C A G U C UUU1phe UCU UCC UUCJ UUA UUG Leu CUU CUC CUA CUG Leu AUU AUC AUA lle AUG Met GUU GUC GUA GUG Second letter Val UCA UCG CCU CCC CCA CCG ACU ACC ACA ACG GCU GCC GCA GCG Ser Pro Thr Ala A UAU Tyr UGCys UAC UAA Stop UGA Stop UAG Stop UGG Trp CAU CACH CAA CAGGIn AAU Asn AAC AAA Lys AAG GAUJASP GAA AC GAG Glu Choose TRP ILE CGU CGC CGA CGG G GGU GGC GGA GGG Arg AGC Ser AGA Arg Gly U GYSC A U SYSC A SCAG A G SCAG Third letter