Biomolecules Questions and Answers

Amylase is a protein involved in breaking down the starches in food Before it can be built genetic information in DNA must be transcribed into mRNA Where does this process take place A Endoplasmic reticulum B Ribosome C Nucleus D Golgi apparatus

Which sentence describes how independent assortment increases genetic variation A It increases the number of possible chromosome combinations that can occur in offspring B It increases the number of possible allele combinations that can occur on a single chromosome C It increases the number of genes in a chromosome that can be inherited OD It combines gametes from different individuals

This graph shows the heights of 50 14 year old female students Heights were recorded to the nearest centimeter cm Heights of Female Students Number of students 30 25 G 20 15 10 5 151 154 155 158 A 159 162 B 163 166 159 162 163 166 Height cm Which range in the histogram is likely to include the mean height for this population C 155 158 167 170

A blue eyed dog s exposure to a mutagen produces a mutation that causes it to birth a litter of puppies that all have brown eyes The puppies offspring all have brown eyes as well What must be true A The mutation occurred in a gamete and cannot be inherited by future generations B The mutation occurred in a somatic cell and can be inherited by future generations OC The mutation occurred in a gamete and can be inherited by future generations D The mutation occurred in a somatic cell and cannot be inherited by future generations

Hemoglobin is a protein involved in oxygen transport Myosin is a protein found in muscles Which sentence describes these proteins A Their structures are based on the amino acid sequences in their polypeptides OB They have the same amino acid sequence and are just folded differently C They can change their structures when the body needs more of a different type of protein D They can swap their functions when the body requires it

Which statement describes amino acids OA They are assembled to form proteins using instructions in RNA that was transcribed from DNA B They are transcribed from DNA which is then translated into RNA before being folded into a protein C They are transcribed from RNA which is then translated into DNA D They are assembled in long chains to form DNA which is then transcribed into RNA

Which phrase correctly identifies the role of tRNA A Carrying the genetic code for a protein from DNA to the cytoplasm for translation B Working with DNA during transcription to make a polypeptide OC Transcribing DNA into RNA polymerase to start protein formation OD Translating mRNA into a specific amino acid sequence

Which type of molecule is shown in the model COOH H N C H CH A Amino acid B mRNA OC Carbohydrate D Polypeptide

How does the structure of DNA determine the expression of genes A The shape of each strand of DNA determines the structure of a protein whose function expresses a trait B The sequences of nucleotides in DNA determine the structures of proteins whose functions express traits OC The nucleotides that make up DNA break down into individual bases that recombine to form proteins that express traits D The two strands that make up each molecule of DNA unwind releasing stored proteins that express traits

Which sentence is true about a population s genes A Gene pools account for only a portion of genes OB The product of all the allele frequencies is equal to 100 OC The sum of all the allele frequencies is equal to 100 OD Phenotype frequencies are always stable

1 Find out the EC number for the enzyme Adenylate Kinase 2 Explain what each number indicates 3 Explain what the enzyme does in one sentence

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Which of the amino acids below would you not expect to see in the mi A HO INICICI H CH CH OH Figure 3 1 B INICIC I H CH CH CH CH

QUESTION 36 Which amino acid would you expect to in the region of the membrane embedded protein indicated by the a A a A b B OC C H H IC CH CH3 CH3 B HO N CIC ZIH CH OH C N H H N CH CH CH NH 0 u NH 910 N C C CH OH H

What color is a Gram Blue Pink Purple Red

2 Transcription or translation which process do you think is more similar between and eukaryotes Why prokaryotes Answer

QUESTION 30 Two or three a helices can sometimes wrap around each other to form

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Which of the functional groups highlight in the molecule below Figure 1 2 is nonpol Figure 1 2 00 a A Ob B OC C d D OH OH O quiere D B F OH

abbreviated ambience articulate humiliation intimidating obligation stimulating surpass Before radio TV and movies came along to 1 it public speaking was a popular form of entertainment Festivals were held in barns and tents and well spoken or 2 speakers drew huge audiences The 3 was exciting like a county fair Some speeches were quite 4 and to the point but the more long winded speakers felt they had an 5 to speak for several hours Debates on 6 topics were also popular with 7 speakers who inspired fear in their opponents and tried to bring them down to defeat and even 8 The most famous speakers went on tours the way rock stars do today

Which of the following is incorrect about prophages replicated with host DNA and passed on to progeny O present when the virus is in lysogony occur when temperate phages enter host cells cause lysis of host cells formed when viral DNA enters the bacterial chromosome

Viral spikes block attachment between virus and host are derived from host proteins are always present on enveloped viruses protrude from the envelope All of the choices are correct

The county board s most important legislative power is finance making law oversight of executive approval of appointments

Which of the following is not true regarding the structure and function of viral spikes They are coded for by the viral genome They consist of proteins and carbohydrates O They are found on both enveloped and naked viruses O They are coded for by the host genome O They mediate the docking process of virus to host cell

Viruses acquire envelopes around their nucleocapsids during O release budding O penetration O replication O assembly adsorption

Question 4 New nonenveloped virus release accurs by SP40 budding both lysis and budding both budding and exocytosis exocytosis

Question 88 Points 1 Taxes on which of the following is an example of a selective sales tax O Bicycle O Automobile O Gasoline O Bread

How do states provide services O Through state agencies and programs O Through local governments they establish O Through federal grants O Through state agencies and programs and local governments that they establish

Who may introduce a bill in the state legislature O Citizens Member of the legislature Interest Groups All of the choices

What is the purpose of police power O To allow police officers to have authority over the people To allow the legislature to promote and protect the well being of the people of the state O To allow the people to overthrow the government O All of the choices

1 Size of a tripod fish and why is it important for its habitats 2 include 2 physical characteristics that tripod fish relate to life on ocean floor

The starch plate must be treated with grams iodine To identify a zone of clearing True False

10 Basic amino acids are positive negative at pH 7 and acidic R group amino acids are positive negative at pH 7 A positive positive C negative positive animativ B positive negative D negative negative 10

26 Tyrosine and tryptophan are less hydrophobic than phenylalanine because A tyrosine and tryptophan have smaller R groups B phenylalanine is a phenol C phenylalanine has no polar group in the side chain D phenylalanine has an indole group E All of the above

24 Glycine is not a stereoisomer because A it does not form enantiomers B it does not exist in two non superimposable mirror image forms C it has no chiral carbon D All of the above E A and B only 247

18 The pH of a 10 4 M solution of HCl is A 3 B 3 5 C 4 D 4 5 E greater than 4 5

23 Which is not a proper way to form a hydrogen bond The symbol R represents a general organic group The hydrogen bonding is represented by dashed lines H I I R C OH N R II H O ENIR H H R R U R IIIH NH N PIE HICH HIN R H TE H H C R IV R C OH O H ON T DIV

25 Disulfide bridges can form in proteins A between any two methionines or cysteines B only between cysteine residues side by side in the protein sequence C between two cystine residues in proteins D between cysteine residues that are close in three dimensional space but not necessarily close in the primary structure 25

27 The amino acids in polypeptide chains which contain sulfur S are A cystine B methionine only C cysteine only D cysteine and methionine E cysteine cystine and methionine 27

22 A fatty acid that contains multiple double covalent bonds is said to be A saturated B monounsaturated C polyunsaturated D hydrogenated E carboxylated to a general organic 22 23

19 Arginine is the most basic of the 20 amino acids because its side chain is conditions A titrated B very highly charged C hydrophobic D protonated E negatively charged 8 under most cell 19

17 Which amino acids are linked in phenylalanylglycine A phenylalanine and glycine C phenol adenine and glycine 19 TI B phenyline alanine and glycine D phenol alanine and glycine 17

7 7 In a biochemistry laboratory a student added ammonium sulfate to a tube containing a buffered protein solution The student then centrifuged the solution What was the student probably trying to do A derivatize the N terminal amino acid of all proteins B change the pH of the buffer solution to solubilize all proteins C selectively precipitate and purify a certain protein D hydrolyze the proteins into their constituent amino acids to determine the percent composition

12 Which substance do you expect to be most soluble in water A ammonia NH3 C methane CH4 mylog B nitrogen N2 D carbon dioxide CO2

11 Hydrogen bonds can occur when hydrogen is covalently bonded to atoms like nitrogen and oxygen What property of nitrogen and of nitrogen and oxygen is important for this A ionizability C atomic mass B electronegativity D hydrophobicity 11

9 If the R group of an amino acid is CH3 then the name of this compound is A methyl amino acid B 2 aminopropanoic C alanine acid D All of the above E B and C

8 Solutes diffuse more slowly in cytoplasm than in water because of A the higher heat of vaporization of water B the presence of many crowded molecules in the cytoplasm C the higher viscosity of water D the absence of charged molecules inside cells

6 An amino acid is to a protein as A a proton B a protein C a nucleotide D a purine E a neutron is to a nucleic acid

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