Biomolecules Questions and Answers

Worksheet 2 Calculating Protons Electrons and Neutrons Element Symbol Al O F C Ne Be Atomic Number 4 S 9 11 14 15 Atomic Mass 6 12 14 16 20 23 31 Protons 3 12 Electrons 3 Neutrons O 2 4 5 6 809

Which statement best characterizes the political climate in Washington D C with regard to Reconstruction following the Civil War The Radical Republicans agreed with the policies of President Lincoln The Radical Republicans agreed with the policies of President Johnson The Radical Republicans agreed with the policies of President Lincoln and opposed President Johnson The Radical Republicans opposed the policies of President Lincoln and President Johnson

According to the Constitution the president has the power to approve Supreme Court nominations O raise taxes declare a law unconstitutional sign or veto bills from Congress

Which best describes the President s Cabinet O the hidden drawer in the President s desk O the group of law makers who represent the President in Congress group of advisors for the President O the location of the nuclear red button for the President

The system of people agencies and departments that help the President carry out his duties is called the O lobbyists O special interest group government corporation system

The main function of the executive branch is to O increase the size of the bureaucracy O write and pass new national legislation select who will serve as president

In the middle of the play Susie froze with stage fright and when the director yelled her name she was flustered The whole experience perturbed Susie who felt perhaps acting wasn t the right career for her What do the words flustered and perturbed suggest about Suzie in these sentences OA Flustered suggests she was not confident and perturbed suggests she was very distasteful OB Flustered suggests she was very angry and perturbed suggests she was extremely sad OC Flustered suggests she was mildly worried and perturbed suggests she was very displeased OD Flustered suggests she was highly embarrassed and perturbed suggests she was greatly upset Reset Submit

The sweet taste of freshly picked corn maize is due to the high level of sugar in the kernels Store bought corn several days after picking is not as sweet because about 50 of the free sugar is converted to starch within one day of picking To preserve the sweetness of fresh corn the busked ears can be immersed in boiling water for a few minutes blanched then cooled in cold water Corn processed in this way and stored in a freezer maintains its sweetness What is the biochemical basis for this procedure A pH change caused by the boiling procedure inhibits the enzymes needed to convert sugars to starch Boiling breaks down starch independent of enzymes Boiling activates enzymes that break down starch into sugar Heat from the boiling procedure destroys the enzymatic activity needed to convert sugars to starch

og and points may be deducted estion 7 enzyme in solution is saturated with ucts is to

The bones within the middle ear connect the O oval window to the round window cochlea to the tympanic membrane tympanic membrane to the oval window O cochlea to the oval window O tympanic membrane to the round window

A certain catalyzed reaction is known to have an activation energy E 68 0 kJ mol Furthermore the rate of this reaction is measured at 296 K and found to a A be 1 0 x 10 M s Use this information to answer the questions in the table below Suppose the concentrations of all reactants is kept the same but the temperature is lowered by 10 from 296 K to 266 K How will the rate of the reaction change Suppose the concentrations of all reactants is kept the same but the catalyst is removed which has the effect of raising the activation energy by 5 from 68 0 kJ mol to 71 4 kJ mol How will the rate of the reaction change The rate will The rate will choose one choose one stay the same rise about 10 rise more than 10 rise less than 10 fall about 10 fall more than 10 fall less than 10

A student is designing an experiment to show the effects of the movement of water across a selectively permeable membrane He places a highly concentrated saltwater solution into a bag that is permeable only to water He then submerges the bag into a beaker of pure water Which one of the following can be expected O The volume of the bag will decrease over time The net flow of water will be from the beaker into the bag causing the contents of the bag to increase in volume O In this situation the flow of water into the bag will never equal the flow of water out of the bag The net flow of water will be from the bag to the surrounding water The pH of the contents of the bag will increase over time

QUESTION 6 What is the purpose of adding sodium hydroxide NaOH to the cheek cell pellet after removing Phosphate Buffered saline on p 55 of the extraction protocol 1 mark Note You might need to conduct an internet search to answer this question The answer must be in your own words

A cleavage furrow is seen in A cytokinesis of animal cells B cytokinesis of plant cells karyokinesis of plant cells D karyokinesis of animal cells

What would happen if this proces does not contain RNA polymerase

Question 3 The woven intertwining mass of hyphae that makes up the body of a mold is a rhizoid septum bud mycelium

Which species have been overexploited due to supposed medicinal properties either real or imagined Choose all that apply 1 Rhinoceros 2 American ginseng 3 Rothschild s orchid 4 Passenger pigeon 5 Elephants 6 Dodo

Fill in the blanks by choosing the correct option from the drop down by referring to the image describing the electron transport chain The NADH and FADH 2 molecules donate high energy The energy is used to drive Complexes I IV are V V V Electron Transport Chain Intermembrane space NADH FADH NAD H Mitochondrial matrix to the electron carriers Cyt c 15 FAD across the is the final electron acceptor in aerobic cellular respiration protein pumps that transport V is produced as the final electron acceptor receives low energy electrons and hydrogen ions 2H 1 20 Inner mitochondrial membrane H O into the intermembrane space particles across the inner membrane

Which of the following are greenhouse gases Check all that apply 1 nitrous oxide 2 water vapor 3 methane 4 molecular oxygen 5 molecular nitrogen

Chapter 4 Quiz Z ons ice questions on this quiz Since we are

approximately 2 5mm x 8mm polysaccharide Scientific fact Rice is composed of starch a and it s function in plants is energy storage Humans consume plant starch as fuel and break it down into monomers glucose which can then be used as instant energy for the process of cellular respiration If there is an excess of glucose a human will convert the glucose into glycogen It s function in animals is energy storage 100 am Meter 10 m 1 m Cl Nanometer 10 m 0 000000001 m human egg 130 m 1 1 000 000 000 m billionth of a meter Centimeter 10 m 0 01 m 1 100 m hundreth of a meter skin cell photoreceptar rod paramecium 210 x 60 m amoeba proteus 500 m Millimeter 10 3 m 0 001 m 1 1 000 m thousandth of a meter Angstrom 10 10 m 0 0000000001 m 1 10 000 000 000 m ten billionth of a meter Micrometer 10 6 m 0 000001 m 1 1 000 000 m millionth of a meter Picometer 10 12 m 0 000000000001 m 1 1 000 000 000 000 m trillionth of a meter

Protists include All of the choices are correct algae and protozon None of the choices are correct yeasts and molds

Primary production is generally highest in O 1 tundra 2 temperate forests 3 tropical oceans 4 wetlands O 5 desert

Parasitic worms have a highly developed O respiratory nervous muscular Odigestive Oreproductive system

CELLULAR RESPIRATION customized Match the types of respiration with their corr

What type of contraception is the least effective O 1 RU486 O 2 the rhythm method O 3 condoms 4 birth control pills 5 All of these contraceptive methods are equally effective

Courses General Biology Assignments Cellular Res GOCELLULAR RESPIRATION customized Drag and drop the terms to label the enzymes and su H 1 H C O

Arrange the steps of citric acid cycle in the Citrate is formed Pyruvic acid is converted into Acetyl CoA a ketoglutarate is formed with the release Fumarate is formed along with a molecule Malate is formed Succinyl CoA is formed and an ATP moled Oxaloacetate is formed to attach to the ne Isocitrate is formed

nd drop the terms to label the enzymes and substrates involved in O C O H C H ATP ADP 0 0 O H C O P O H O

Select the statement s that correctly describe s the proce Hexokinase uses an ATP to phosphorylate glucose Once glucose is phosphorylated it can leave the cell Phosphofructokinase uses an ATP to phosphorylate fructose 6 The end product of glycolysis is phosphoenolpyruvate Four ATP are invested in the process of glycolysis The ATP produced in glycolysis occurs by substrate level phos The cell produces four ATP for the cell to use at the end of gly Glycolysis occurs in the cytoplasm of all cells

General Biology Assignments Cellular Respiration Assignment CEI R RESPIRATION customized each statement as True False regarding Adenosine Triphosphate ydration synthesis of ATP produces ADP is a renewable source of cellular energy d molecules such as glucose produce new sources of ATP for the cell duction of ATP and the use of ATP to perform work are examples of endergonic re moval of a phosphate from ATP store s energy for the cell to use at a later time phosphorylation adds a phosphate to ADP producing ATP ergy from ATP fuels muscle contraction and the sodium potassium pump

Highlight the Oxidation and reduction reactions occu If an electron is removed from a molecu Addition of an electron is known as red The energy atoms have is the result of A molecule that receives an electron in In this simple reaction NAD N FAD is an important electron carrier The energy released from food molecu

How do the features of a larval tunicate differ from an adult tunicate Check all that apply 1 Larval tunicates have a hollow dorsal nerve cord that is reduced to a ganglion in adults 2 The larval tunicate lacks an incurrent and excurrent siphon but the adult has both structures 3 Larval tunicates have a conspicuous notochord that is lost by the time they reach adulthood 4 The tail of a larval tunicate becomes more prominent in the adult 5 The pharynx of the larval tunicate becomes more prominent in the adult

The gene for snapdragon flower color has two different alleles The Rallele codes for red flowers and the Wallele codes for white flowers This characteristic exhibits incomplete dominance so a mixture of both alleles RW genotype results in a plant with pink flowers A 4 B 4 12 What is the frequency of the RR genotype in the population shown in the diagram C 4 8 RR D 4 WW RW

Which of the following best describes the physical structure of a gene Choose 1 answer a stretch of amino acids within a protein molecule a stretch of nucleotides within a larger DNA molecule all of the nucleotides in a small DNA molecule

The bonds connecting atoms in molecules contain energy Chemical reactions involve the breaking of bonds in the input reactant molecules a product molecules Energy is used in order to break bonds during reactions Energy is released as bonds are formed during reactions Energy kilocalories kcal The energy required to break apart glucose and oxygen during cellular respiration is 2 878 kcal The energy released during the formation of carb respiration is 3 564 kcal Identify whether more energy is required or released during cellular respiration Use evidence from the

O Which graph shows how this population s distribution of phenotypes would appear after stabilizing selection B O C Number of individuals Number of individuals Number of individuals Number of i Number of individuals Made Phenotype value Mode mean Phenotype value Phenotype value New mode Previous mode Phenotype value Two modes Mean

What is one reason a population s phenotype frequencies might remain stable over time OA New biotic factors are introduced regularly B Many changes occur in the environment C The population has a large amount of genetic variation

Hamsters can have a variety of colors including golden and black The allele for golden color G is dominant over the allele for black color g The table shows the genotypes and phenotypes for a small population of hamsters Genotype GG Gg 99 A 20 35 Phenotype What is the frequency of the golden phenotype OB 35 50 OC 15 35 Golden Golden Black AFTER Number of hamsters 15 30 5

Which of the following statements are true of Trichomonas vaginalis 1 It uses flagella for movement 2 It synthesizes its own organic nutrients 3 It attacks the human genitourinary tract 4 It lacks mitochondria O 5 It is a member of the supergroup Discoba

A Add commas where needed around nonrestrictive elements If a sentence is correct mark it OK Example 1 A Jim Thorpe s Olympic medals which he won in 1912 but had to forfeit were for the pentathlon and the decathlon Thorpe won Olympic medals only in 1912 4 WAL The Carlisle students who needed summer jobs often played baseball for Carolina teams Not all Carlisle students needed summer jobs 10 2 The players who were willing to lie used false names when they played for little known teams Jim did not Only some of the players were willing to lie 3 Those who had received money for playing their sport were disqualified because they were no longer amateurs Only some received money id 1978 h ge BiH 2 The five sport event which is called the pentathlon is difficult There is only one ng on a no five sport event 15173 illw ban er Insinale pulsubou no vino bobsons you nevaramos reale 5 The decathlon which is a ten sport event is considered the most difficult of all b1000 Olympic events There is only one ten sport event B Add commas as necessary in the following sentences Example In Stockholm Sweden s King Gustav presented the 1912 Olympic winners with their gold medals in addition he spoke briefly to some of them med baglad fot 6 As King Gustav presented Jim Thorpe s 1912 Olympic medal he said to Jim Sir you are the greatest athlete in the world cumula 7 berbest bonis In January 1913 however a newspaper reported that Jim had been paid for playing for the Carolina baseball teams ujarila ediso nit 8 When the Amateur Athletic Union AAU asked Jim said he had been paid 9 Stating that he had not known he was doing wrong Jim insisted that he had acted nearl sritie trabbathol grateft no worse than athletes who used false names Jim having presented his case the AAU made its ruling specifically it ruled that Jim

the following additional passage to answer the next questio pose you travel to the future to a time when neither cystic fibr sed any deaths for many generations In all of these future po le still exists at a low frequency 0 You visit a huge city with millions of people If you were to sis allele from one generation to the next what should happ few generations and why The allele frequency should change a lot from one generation to the The allele frequency should not change much from one generation opulation is large The allele frequency should steadily increase due to natural selectio nou chould steadily decrease due to natural selecti

1FAIpQLSfBnKtXQEQk1zKpz swlQ3cnVrPJG0nviEdTiv1Y AEovOaA viewform Attend match the following batholith pluton laccolith dike sill structure that results from magma cooling beneath the earth s surface O magma flows between parallel layers of sedimentary rock O O This question requires one response per row which of the following are plutons lens shaped large magma chamber moves into cracks across the layers structure that has pushed up the earth s crust O O O O O O 5 points largest of them all lots of surface exposure O 4 points

1 Basic observations of genetic drift As a start set up driftR with a starting allele frequency of 0 5 zero mutation rate fitness of all three genotypes 1 migration rate 0 number of populations 1 population size 100 and 200 generations Under these conditions only genetic drift should affect allele frequencies Run the simulation Look at the main output window To make this a little less abstract when you think of a opulation please picture a population of your favorite eukaryote So for some of you this will be about xenophyophores or gray whales or California poppies or horseshoe crabs or dumbo octopus Whatever you like a What happens to the frequency of allele A over time Does it always go up Does it always go down What if you run the simulation again And again And again Rather than running it over and over again you could set the number of starting populations to 5 or so Above 5 it gets hard to track each individual population because the graph gets crowded b Is the ending after 200 generations allele frequency in a population the same as the starting allele frequency in that population Or is it always lower Or always higher How would you describe this pattern of change in words c After 200 generations have any populations become fixed for allele A that is p 1 they ve lost allele B or have any populations ever lost allele A p 0 The simulation keeps track of this for you look at the fixed lost counter at the bottom left of the main output window If you run the simulation with the settings above but for 50 populations either run it 10 times with n 5 populations or run it once with number of populations set to 50 what percentage of the populations are left with only one allele A or B d What is the cause of this pattern of change Define genetic drift in your own words

Saved Question 8 1 point Which of the following statements is NOT true of Gram positive bacteria 1 They lack the lipopolysaccharides that Gram negative bacteria have 2 They are less resistant to antibiotics than Gram negative bacteria 3 They turn purple when subjected to the Gram staining process whereas Gram negative bacteria stain pink 4 They have a thicker peptidoglycan layer than do Gram negative bacteria 5 They have a gram molecular weight of more than 1 0 whereas Gram negative bacteria have a gram molecular weight of less than 1 0

Orm a hypothesis A hypothesis is a proposed explanation for an observation Hypotheses must be estable Write a hypothesis about what causes the aliens to change their shape Your hypothesis hould focus on one variable and be in an if then statement like If the temperature is greatly increased or decreased then there will be measurable changes in the alien population If the water is greatly increased or decreased then there will be measurable changes in the alien population If the amount of light is greatly increased or decreased then there will be measurable change in

A variable is something that can be changed in an experiment Look on the SIMULATION pane What are the three variables you can change in your laboratory Predict Which of these variables do you think will have the greatest effect on the aliens Why Get the Gizmo ready Click Reset Select the BAR CHART tab Turn on Show numerical values Observe Change the Light to 0 hours day the Water to 1 drops hr and the to 0 C Click Play and observe the aliens until the numbers are stable Click Pause 1 How many of each type of alien are there now D O Thin 50 Medium 25 Thick 25 O Thin 20 Medium 80 Thick 0 O Thin 0 Medium 80 Thick 20 TUL

Click Reset Change the Light to 24 hours day the Water to 20 drops hr and the Temp to 30 C Click Play How many of each type of alien are there now Thin 9 Medium 8 Thick 85 Thin 90 Medium 8 Thick 2 Thin 0 Medium 25 Thick 75 O Thin 20 Medium 20 Thick 60

Which mutation would likely have the largest effect on an enzyme OA A substitution that produces a stop codon at the beginning of a gene B An insertion of three nucleotides near the end of the gene C A frameshift mutation near the end of a gene OD A deletion of three nucleotides near the end of the gene

Prompt 1 Some organisms are known as extremophiles literally to love extreme conditions For example thermophiles like exceptionally high temperatures near boiling even halophiles like to live in conditions with exceptionally high salt concentrations Some organisms live and even eat radiation live in sub zero conditions or under incredibly high pressure conditions Pick one of these groups how would the plasma membrane composition of their cells differ from ours living in normal conditions Refer to saturated vs unsaturated lipids and cholesterol Can you find any articles about an extremophile s odontic plaa momk