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Which of the following sugars can be a substrate for hexokinase?
Which of the following sugars can be a substrate for hexokinase?
Which of the following sugars can be a substrate for hexokinase?
 a. glucose
  b. fructose
  c. mannose
  d. all of these
  e. none of these
Revolver38   44   1 Reply
6 years ago
Which of the following disaccharides cannot be digested by mammals?
Which of the following disaccharides cannot be digested by mammals?
Which of the following disaccharides cannot be digested by mammals?
 a. cellobiose
  b. sucrose
  c. maltose
  d. lactose
bronzeclock   44   1 Reply
6 years ago
Which of the following molecules is a disaccharide?
Which of the following molecules is a disaccharide?
Which of the following molecules is a disaccharide?
 a. glucose
  b. lactose
  c. fructose
  d. galactose
ugai_kyut   44   1 Reply
6 years ago
Which of the following groups is produced when an aldehyde is oxidized?
Which of the following groups is produced when an aldehyde is oxidized?
Which of the following groups is produced when an aldehyde is oxidized?
 a. ketone
  b. carboxyl
  c. alcohol
  d. ether
lovelyturret   44   1 Reply
6 years ago
The and forms of the same sugar are called
The and forms of the same sugar are called
The  and  forms of the same sugar are called
 a. anomers.
  b. diastereoisomers.
  c. enantiomers.
  d. epimers.
  e. none of these
redheadprincess   44   2 Replies
6 years ago
Haworth projection formulas (Multiple Choice)
Haworth projection formulas (Multiple Choice)
Haworth projection formulas
 a. are representations of the cyclic form of sugars
  b. can show the distinction between the  and  anomers
  c. both of the above
  d. neither of the above
Larrhea   44   1 Reply
6 years ago
The protein called p53 is especially important in cancer because:
The protein called p53 is especially important in cancer because:
The protein called p53 is especially important in cancer because:
 a. Protein p53 has the ability to prevent cells from dividing.
  b. Protein p53 has the ability to repair mutations.
  c. Protein p53 can cause damaged cells to enter
ugai_kyut   44   2 Replies
6 years ago
Which of the following descriptions of T cells is true?
Which of the following descriptions of T cells is true?
Which of the following descriptions of T cells is true?
 a. They produce interleukins.
  b. They display MHCs.
  c. They produce antibodies.
  d. They act as either helper or killer cells.
  e. They carry out all these funct
Random   44   1 Reply
6 years ago
A proteome is (Multiple Choice)
A proteome is (Multiple Choice)
A proteome is
 a. a protein-based vector.
  b. a three-dimensional protein structure.
  c. a collection of all the proteins produced in a given cell or tissue.
  d. an improperly digested protein responsible for certain diseases
motee   44   1 Reply
6 years ago
Sometimes DNA probes are used to prove that a gene has been incorporated into a eukaryotic genome. ...
Sometimes DNA probes are used to prove that a gene has been incorporated into a eukaryotic genome. ...
Sometimes DNA probes are used to prove that a gene has been incorporated into a eukaryotic genome. The following are all steps used in such a procedure, except:
 a. Digestion of the cellular DNA to break it into manageable sizes.
  b. Sepa
hawkins1346   44   2 Replies
6 years ago
The maximum number of possible triplets of the four bases occurring in RNA, which are used to encode ...
The maximum number of possible triplets of the four bases occurring in RNA, which are used to encode ...
The maximum number of possible triplets of the four bases occurring in RNA, which are used to encode 20 amino acids, is _____.
 a. forty-two
 b. twenty-four
  c. forty-six
 d. sixty-four
ugai_kyut   44   1 Reply
6 years ago
Which of the following is not required for the elongation phase of protein synthesis?
Which of the following is not required for the elongation phase of protein synthesis?
Which of the following is not required for the elongation phase of protein synthesis?
 a. GTP
  b. fmet-tRNAfmet
  c. peptidyl transferase
  d. mRNA
kekebab001   44   1 Reply
6 years ago
Which of the following is not a characteristic of catabolite activator protein (CAP)?
Which of the following is not a characteristic of catabolite activator protein (CAP)?
Which of the following is not a characteristic of catabolite activator protein (CAP)?
 a. it is a positive regulator of the lac operon
  b. when the cell has sufficient glucose and lactose, CAP will not be bound to the CAP binding site
Jovaini   44   1 Reply
6 years ago
The weakness of AU base pairs at the end of the RNA molecule may help in dissociation of the new RNA ...
The weakness of AU base pairs at the end of the RNA molecule may help in dissociation of the new RNA ...
The weakness of AU base pairs at the end of the RNA molecule may help in dissociation of the new RNA product.
 a. True
  b. False
ugai_kyut   44   1 Reply
6 years ago
Which of the following best describes the order of events at the promoter?
Which of the following best describes the order of events at the promoter?
Which of the following best describes the order of events at the promoter?
 a. open complex  closed complex  transcription initiation
  b. closed complex  open complex  transcription initiation
  c. open complex  transcription initiat
omrglss   44   1 Reply
6 years ago
One major difficulty in replicating linear DNA molecules is replacing the segment of DNA occupied by ...
One major difficulty in replicating linear DNA molecules is replacing the segment of DNA occupied by ...
One major difficulty in replicating linear DNA molecules is replacing the segment of DNA occupied by the RNA primer on the telomeres at the ends of the DNA.
 a. True
  b. False
kristina92293   44   1 Reply
6 years ago
In order to replicate both strands, E. coli
In order to replicate both strands, E. coli
In order to replicate both strands, E. coli
 a. displaces one of the strands and folds it back so both strands face in the same direction, so they can be synthesized at once.
  b. synthesizes each strand in the opposite direction (one 5'  
Pooh bear   44   1 Reply
6 years ago
In the DNA in chromatin, substitution mutations:
In the DNA in chromatin, substitution mutations:
In the DNA in chromatin, substitution mutations:
 a. are at a maximum in the linker regions
  b. are at a maximum in the nucleosomes
  c. occur maximally in the same places as deletion mutations
  d. are rarely seen, but deletion
jennjenn563   44   1 Reply
6 years ago
Which of the following statements concerning the B-form of DNA is false?
Which of the following statements concerning the B-form of DNA is false?
Which of the following statements concerning the B-form of DNA is false?
 a. It twists in a left-handed direction.
  b. The distance between base pairs is 3.4.
  c. The width of a base pair is about 1.1 nm.
  d. The diameter, inc
alexiswells   44   1 Reply
6 years ago
Which best describes the relationship between the nucleobases in a piece of DNA?
Which best describes the relationship between the nucleobases in a piece of DNA?
Which best describes the relationship between the nucleobases in a piece of DNA?
 a. They are parallel to the helical axis.
  b. They are perpendicular to the helical axis.
  c. They are randomly oriented with respect to the helical a
Angela26kristin   44   1 Reply
6 years ago
The association of membrane proteins with lipids in the membrane bilayer always involves
The association of membrane proteins with lipids in the membrane bilayer always involves
The association of membrane proteins with lipids in the membrane bilayer always involves
 a. electrostatic interactions
  b. hydrophobic interactions
  c. covalent linkages
  d. all of the above
linasottile   44   1 Reply
6 years ago
How does the presence of cis double bonds in fatty acids affect membrane fluidity?
How does the presence of cis double bonds in fatty acids affect membrane fluidity?
How does the presence of cis double bonds in fatty acids affect membrane fluidity?
 a. They tend to increase the fluidity.
  b. They tend to decrease the fluidity.
  c. They don't have any specific effect on fluidity.
  d. fatty
lovelyturret   44   1 Reply
6 years ago
The following is true about the hydroxyproline in collagen:
The following is true about the hydroxyproline in collagen:
The following is true about the hydroxyproline in collagen:
 a. Hydroxyproline is incorporated into the chain during polymerization of amino acids.
  b. Vitamin C is necessary for the synthesis of hydroxyproline.
  c. Hydroxyproline i
ugai_kyut   44   2 Replies
6 years ago
When does a weak acid buffer best?
When does a weak acid buffer best?
When does a weak acid buffer best?
 a. From one pH unit below its pKa to its pKa.
  b. From its pKa to one pH unit above its pKa.
  c. Within one pH unit of its pKa, both above and below.
  d. Weak acids do not make good buffers
alexiswells   44   1 Reply
6 years ago
In a comparison of allosteric and non-allosteric enzymes
In a comparison of allosteric and non-allosteric enzymes
In a comparison of allosteric and non-allosteric enzymes
 a. it is always possible to define a KM
  b. it is always possible to define a Vmax
  c. competitive inhibition is always a possibility
  d. much of the terminology is com
Random   44   1 Reply
6 years ago
If atoms with greatly differing electronegativities form a bond, that bond will be
If atoms with greatly differing electronegativities form a bond, that bond will be
If atoms with greatly differing electronegativities form a bond, that bond will be
 a. polar.
  b. nonpolar.
  c. amphipathic.
  d. acidic.
stalmoney   44   1 Reply
6 years ago
Which of the following correctly lists the isoelectric pH's of asp, asn, and arg from lowest to ...
Which of the following correctly lists the isoelectric pH's of asp, asn, and arg from lowest to ...
Which of the following correctly lists the isoelectric pH's of asp, asn, and arg from lowest to highest?
 a. D N R
  b. D R N
  c. R N D
  d. R D N
  e. N R D
  f. N D R
alexiswells   44   1 Reply
6 years ago
Which of the following is NOT a Functional Group
Which of the following is NOT a Functional Group
Which of the following is NOT a Functional Group
 a. Amino group
  b. Protein
  c. Alcohol group
  d. Carbonyl group
Jovaini   44   1 Reply
6 years ago
If you were trying to design a western blot experiment, how would you figure out the time and ...
If you were trying to design a western blot experiment, how would you figure out the time and ...
If you were trying to design a western blot experiment, how would you figure out the time and voltage needed to transfer proteins to the nitrocellulose membrane?
  What will be an ideal response?
Angela26kristin   44   1 Reply
6 years ago
What molecular weight should you find for the LDH band?
What molecular weight should you find for the LDH band?
What molecular weight should you find for the LDH band?
  What will be an ideal response?
kekebab001   44   1 Reply
6 years ago
What would be the concentration from Problem 1 expressed in w/v?
What would be the concentration from Problem 1 expressed in w/v?
What would be the concentration from Problem 1 expressed in  w/v?
  What will be an ideal response?
adamsnaya   44   1 Reply
6 years ago
The insulin receptor is in what class of tyrosine kinase receptors?
The insulin receptor is in what class of tyrosine kinase receptors?
The insulin receptor is in what class of tyrosine kinase receptors?
 
  a. Class I with 2 Cys-rich repeat sequences
  b. Class II with a2b2 tetrameric structure
  c. Class III with multiple immunoglobulin-like extracellular domai
Pooh bear   44   1 Reply
6 years ago
Steroid hormones, such as glucocorticoids, effect their action by:
Steroid hormones, such as glucocorticoids, effect their action by:
Steroid hormones, such as glucocorticoids, effect their action by:
 
  a. binding to a plasma membrane receptor, which stimulates a signal transduction pathway within the cell
  b. binding to a plasma membrane receptor, which stimulat
jennjenn563   44   1 Reply
6 years ago
Which is/are true of protein isoforms?
Which is/are true of protein isoforms?
Which is/are true of protein isoforms?
 
  a. they are related polypeptides
  b. they have identical structure and function
  c. they are the result of different transcripts of a single gene
  d. a and c
  e. a, b, and
Greenspotsock   44   2 Replies
6 years ago
When the cellular level of tryptophan decreases in E. coli:
When the cellular level of tryptophan decreases in E. coli:
When the cellular level of tryptophan decreases in E. coli:
 
  a. tryptophan-bound Trp repressor associates with trp operator.
  b. Trp aporepressor has lowered affinity for trp promoter allowing RNA. polymerase binding and transcrip
mahi   44   1 Reply
6 years ago
Expression of genes independently of regulation is termed:
Expression of genes independently of regulation is termed:
Expression of genes independently of regulation is termed:
 
  a. negative regulation.
  b. constitutive expression.
  c. transcription expression.
  d. repressible regulation.
  e. autoregulation.
linasottile   44   1 Reply
6 years ago
Nucleotide sequences that identify the location of transcription start sites and regulate the level ...
Nucleotide sequences that identify the location of transcription start sites and regulate the level ...
Nucleotide sequences that identify the location of transcription start sites and regulate the level of transcription are called:
 
  a. sigma factors.
  b. Pribnow boxes.
  c. TATA boxes.
  d. promoters.
  e. enhancers.
Revolver38   44   1 Reply
6 years ago
In eukaryotic cells, one of the protein kinases that acts on the pre-replication complex (pre-RC) to ...
In eukaryotic cells, one of the protein kinases that acts on the pre-replication complex (pre-RC) to ...
In eukaryotic cells, one of the protein kinases that acts on the pre-replication complex (pre-RC) to trigger DNA replication is:
 
  a. ORC.
  b. MCM.
  c. Cdc6p.
  d. RLF.
  e. cyclin B-CDK.
kekebab001   44   1 Reply
6 years ago
Under strenuous aerobic exercise, which of the following would be true for skeletal muscle?
Under strenuous aerobic exercise, which of the following would be true for skeletal muscle?
Under strenuous aerobic exercise, which of the following would be true for skeletal muscle?
 
  a. only glucose will serve as a fuel source
  b. only fatty acids will serve as a fuel source
  c. both glucose and fatty acids will
lovelyturret   44   1 Reply
6 years ago
How many NADPH are required to make one molecule of palmitic acid from acetyl CoA?
How many NADPH are required to make one molecule of palmitic acid from acetyl CoA?
How many NADPH are required to make one molecule of palmitic acid from acetyl CoA?
 
  a. 7
  b. 8
  c. 14
  d. 16
  e. 21
redheadprincess   44   1 Reply
6 years ago
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