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BIO 334 questions thru topic 8
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Questions in this quiz (24)
1all of the following are model organisms except:
- Ayeast
- Bfruit fly
- Cchimpanzee
- Dround worm
- Emustard plant
2which of the following macromolecules are known to have catalytic functions in normal cells?
- Aproteins
- BDNA
- CRNA
- Dpolysaccharides
- Eboth proteins and RNA
3DNA strands in the double helix are __________ which means the strand runs in opposite directions
- Abase paired
- Bantagonists
- Cantiparallel
- Dparallel
- Etwisted
4which of the following amino acids has a negatively charged side chain with a neutral pH?
- Aalanine
- Baspartate
- Cglutamine
- Dhistadine
- Eglycine
5which of the following is the weakest interaction?
- AH bonds
- Bionic bonds
- Cphospho-anhydride bonds
- Dvan der Waals interactions
- Ecovalent bonds
6amphipathic refers to molecules that are:
- Ahydrophillic
- Bhydrophobic
- Cnon polar at both ends
- Dcharged at both ends but with opposite charges
- Echarged at one end and non polar at the other
7which of the following is not an activated form of a monomer?
- Aadenosine triphosphate
- Bglucose-6-phosphate
- Caminoacyl tRNA
- Damino acid
- Euracyl triphosphate
8the site on an enzyme that will bind to the substrate is called:
- Aprosthetic group
- Bcatalyst
- Cactive site
- Dactivation site
- Emetastable site
9an enzyme:
- Abinds substrates in a manner that facilitates formation of a product
- Bdecreases rate of reaction
- Cchanges position of equilibrium in reaction
- Ddoesn't change rate at which equilibrium is achieved
- Eis always a protein
10proteins are often composed of 2 or more distinct molecules that fold independently. This represents protein that functions in semi-independent manner
- Aprotein motifs
- Bprotein complexes
- Cdomains
- Dbeta sheets
- Ealpha helices
11where are hydrophobic interactions most likely to occur?
- Aon surface of water soluble protein
- Bcore of water soluble protein
- Cin contact with water molecules
12___________ and turns connect different peptide segments, allowing polypeptide chains to fold back in on themselves
- Arods
- Bloops
- Clinkers
- Dsheets
- Ebetas
13GTPases are different from kinases in that
- Abind to nucleoside triphosphates
- Bhydrolyze nucleoside triphosphates
- Care molecular switches
- Dare abundant
- Eregulate cellular events
14what kind of interaction is not involved in binding substrate to a normally functioning enzyme?
- AH bonds
- Btransient covalent bond
- Cionic bonds
- Dpermanent covalent bond
- Ehydrophobic interactions
15a small molecule that binds to an active site of an enzyme and disrupts its catalytic function is:
- Aallosteric inhibitor
- Bcompetitive inhibitor
- Csocial inhibitor
- Dsubstrate
- Ean activator
16phosphate group is generally on ________ end of polynucleotide and hydroxyl group of sugar is found on _______ end
- A5', 3'
- B3', 4'
- C3', 5'
- D5, 3
- E5', 4'
17what gives DNA molecule its negative charge?
- Adeoxyribose
- Bribose
- Cphosphate groups
- Dchlorine ions
- Eadenine
18what explains uniform width of DNA along its length?
- Apyramidine nitrogenous base always pairs with purine nitrogenous base
- Bdidn't get the rest of the answers
19condition in which cells have either more or less than normal diploid number of chromosomes is called:
- Apolyploidy
- Baneuploidy
- Ceuploidy
- Ddihaploidy
- Ediploidy
20which percent of human genome codes for amino acids in our proteins?
- A15%
- B23%
- Croughly 1.5%
- Droughly 7.5%
- E70%
21labeled, single stranded DNAs used to localize positions of specific complementary DNA sequences within chromosomes in in situ hybridization are called
- Aprimers
- Bgenes
- Cprobes
- DFISH
- Ediploid
22Histone folds consist of:
- Aa dimer of alpha helical bundles
- B3 alpha helices
- Ca coiled coil
- Da beta sheet and alpha helix
- E2 beta strands
23histones have very large relative amounts of which amino acids?
- Ahistidine and proline
- Bglutamate and aspartate
- Clysine and glutamine
- Darginine and lysine
- Earginine and aspartate
24core particle of nucleosomes consists of ____________ protein complex
- Acytoplasmic
- Boctameric
- Cdiametric
- Dzig zag
- Etetrameric
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- clicker questions thru topic 6
- Author
- erika.roloff
- Language
- English
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