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Which amino acid takes on a positive charge when the R-group gains a proton?
Which amino acid takes on a positive charge when the R-group gains a proton?
Which amino acid takes on a positive charge when the R-group gains a proton?
 a. Glutamic Acid
  b. Histidine
  c. Glutamine
  d. Tyrosine
  e. Glycine
hiufwsiuefbwe   21   1 Reply
6 years ago
Which of the following organelles does not have a double membrane?
Which of the following organelles does not have a double membrane?
Which of the following organelles does not have a double membrane?
 a. mitochondrion
  b. nucleus
  c. endoplasmic reticulum
  d. chloroplast
hiufwsiuefbwe   31   1 Reply
6 years ago
Which cell component is able to capture the energy of light?
Which cell component is able to capture the energy of light?
Which cell component is able to capture the energy of light?
 a. Nucleus
  b. Lysosome
  c. Rough Endoplasmic Reticulum
  d. Chloroplast
  e. Mitochondrion
hiufwsiuefbwe   66   1 Reply
6 years ago
All eukaryotic organisms (Multiple Choice)
All eukaryotic organisms (Multiple Choice)
All eukaryotic organisms
 a. are multicellular
  b. have a nucleus
  c. have chloroplasts
  d. have a cell wall
hiufwsiuefbwe   51   1 Reply
6 years ago
Define the terms transmittance, transmittance, absorbance, and extinction coefficient. What will ...
Define the terms transmittance, transmittance, absorbance, and extinction coefficient. What will ...
Define the terms transmittance,  transmittance, absorbance, and extinction coefficient.
  What will be an ideal response?
hiufwsiuefbwe   79   1 Reply
6 years ago
If a 250 mL solution of ethanol in water is prepared with 4 mL of absolute ethanol, what is the ...
If a 250 mL solution of ethanol in water is prepared with 4 mL of absolute ethanol, what is the ...
If a 250 mL solution of ethanol in water is prepared with 4 mL of absolute ethanol, what is the concentration of ethanol in  v/v?
  What will be an ideal response?
hiufwsiuefbwe   58   1 Reply
6 years ago
Like acetylcholine, ____ and ____ are excitatory, but must be removed by ____.
Like acetylcholine, ____ and ____ are excitatory, but must be removed by ____.
Like acetylcholine, ____ and ____ are excitatory, but must be removed by ____.
 
  a. Asp; Lys; degradation
  b. Asp; Gly; reuptake
  c. Glu; Gln; reuptake
  d. Gln; Lys; degradation
  e. Lys; Arg; degradation
hiufwsiuefbwe   21   1 Reply
6 years ago
Which of the following statements about protein folding is INCORRECT?
Which of the following statements about protein folding is INCORRECT?
Which of the following statements about protein folding is INCORRECT?
 
  a. the Hsp70 proteins bind to hydrophilic regions of the protein, thus preventing aggregation
  b. the Hsp60 proteins are also known as chaperonins
  c. th
hiufwsiuefbwe   33   1 Reply
6 years ago
A dominant mechanism for control of eukaryotic peptide chain initiation is:
A dominant mechanism for control of eukaryotic peptide chain initiation is:
A dominant mechanism for control of eukaryotic peptide chain initiation is:
 
  a. allosteric regulation.
  b. cofactor availability control.
  c. competitive inhibition.
  d. phosphorylation/dephosphorylation.
  e. rib
hiufwsiuefbwe   23   1 Reply
6 years ago
All are characteristics of eukaryotic mRNA EXCEPT:
All are characteristics of eukaryotic mRNA EXCEPT:
All are characteristics of eukaryotic mRNA EXCEPT:
 
  a. poly (A) tail.
  b. no Shine-Dalgarno sequence.
  c. codon-binding directs for an initiator tRNA carrying met.
  d. 5'-7methyl-GTP cap.
  e. all are characterist
hiufwsiuefbwe   74   1 Reply
6 years ago
Which of the following is true regarding the araBAD operon?
Which of the following is true regarding the araBAD operon?
Which of the following is true regarding the araBAD operon?
 
  a. binding of arabinose causes dimerization of AraC allowing it to bind to araO2 and araI1
  b. when bound to arabinose, the AraC dimer must also bind to a CAP-cAMP dimer
hiufwsiuefbwe   33   1 Reply
6 years ago
The heptapeptide repeat in the carboxy terminal domain (CTD) in the RPB1 subunit of RNA polymerase ...
The heptapeptide repeat in the carboxy terminal domain (CTD) in the RPB1 subunit of RNA polymerase ...
The heptapeptide repeat in the carboxy terminal domain (CTD) in the RPB1 subunit of RNA polymerase II is phosphorylated to ____.
 
  a. convert to an elongation complex
  b. bind to DNA
  c. form a holo-RNA polymerase II
  d
hiufwsiuefbwe   33   1 Reply
6 years ago
Discuss the significance of glutamine synthetase.
Discuss the significance of glutamine synthetase.
Discuss the significance of glutamine synthetase.
 
  What will be an ideal response?
hiufwsiuefbwe   48   1 Reply
6 years ago
All of the following are characteristics of alkaptonuria EXCEPT:
All of the following are characteristics of alkaptonuria EXCEPT:
All of the following are characteristics of alkaptonuria EXCEPT:
 
  a. excretion of homogentisate
  b. air oxidation causes urine to turn dark on standing
  c. results in mental retardation due to accumulation of Phe metabolites
hiufwsiuefbwe   92   1 Reply
6 years ago
Characteristics of mixed-function oxidases include all EXCEPT:
Characteristics of mixed-function oxidases include all EXCEPT:
Characteristics of mixed-function oxidases include all EXCEPT:
 
  a. usually involve cytochrome P-450.
  b. often catalyze hydroxylation reactions on ring-systems such as sterols.
  c. use both NADPH and O2.
  d. one produc
hiufwsiuefbwe   30   1 Reply
6 years ago
An important mechanism of arachidonate release and eicosanoid synthesis involves ____ and ____. ...
An important mechanism of arachidonate release and eicosanoid synthesis involves ____ and ____. ...
An important mechanism of arachidonate release and eicosanoid synthesis involves ____ and ____.
 
  a. insulin release; high blood sugar
  b. glucagon release; low blood sugar
  c. tissue injury; low blood sugar
  d. inflamm
hiufwsiuefbwe   61   1 Reply
megabyte7
6 years ago
The first three reactions of -oxidation of saturated fatty acids are analogous to which sequence of ...
The first three reactions of -oxidation of saturated fatty acids are analogous to which sequence of ...
The first three reactions of -oxidation of saturated fatty acids are analogous to which sequence of metabolic reactions already discussed?
 
  a. succinate  fumarate  malate  oxaloacetate
  b. isocitrate  -ketoglutarate  succinate  fu
hiufwsiuefbwe   48   1 Reply
6 years ago
What coenzyme is found in pyruvate carboxylase that aids in many carboxylation reactions?
What coenzyme is found in pyruvate carboxylase that aids in many carboxylation reactions?
What coenzyme is found in pyruvate carboxylase that aids in many carboxylation reactions?
 
  a. thiamine pyrophosphate
  b. biotin
  c. folic acid
  d. lipoic acid
  e. none of the above
hiufwsiuefbwe   29   1 Reply
6 years ago
Which of the following reactions represents the gluconeogenic alternative to the irreversible ...
Which of the following reactions represents the gluconeogenic alternative to the irreversible ...
Which of the following reactions represents the gluconeogenic alternative to the irreversible reaction of PFK-1 in glycolysis?
 
  a. fructose-6-P + ADP  fructose + ATP
  b. fructose-6-P + H2O  fructose + Pi
  c. fructose-1,6-bis
hiufwsiuefbwe   44   1 Reply
6 years ago
Unsaturated fatty acids in membranes are particularly susceptible to ____ and vitamin E may provide ...
Unsaturated fatty acids in membranes are particularly susceptible to ____ and vitamin E may provide ...
Unsaturated fatty acids in membranes are particularly susceptible to ____ and vitamin E may provide protection because it is a potent ____.
 
  a. oxidation; antioxidant
  b. reduction; reducing agent
  c. reduction; reducing age
hiufwsiuefbwe   36   1 Reply
6 years ago
All of the following are examples of energy transduction EXCEPT:
All of the following are examples of energy transduction EXCEPT:
All of the following are examples of energy transduction EXCEPT:
 
  a. dehydrogenase catalyzed reactions
  b. isomerase reactions
  c. oxidative phosphorylation
  d. NAD+- NADH shuttle
  e. all of the above are correct
hiufwsiuefbwe   25   1 Reply
6 years ago
In the case of shared anabolic and catabolic pathways, the ____ serve as the points of regulation. ...
In the case of shared anabolic and catabolic pathways, the ____ serve as the points of regulation. ...
In the case of shared anabolic and catabolic pathways, the ____ serve as the points of regulation.
 
  a. largest enzymes
  b. ATP producing enzymes
  c. NADH utilizing enzymes
  d. rate-limiting enzymes
  e. all are tr
hiufwsiuefbwe   69   1 Reply
6 years ago
All are characteristics of anabolism EXCEPT:
All are characteristics of anabolism EXCEPT:
All are characteristics of anabolism EXCEPT:
 
  a. assembly of complex molecules.
  b. formation of new covalent bonds.
  c. ATP provides energy.
  d. NADPH is an electron donor.
  e. all are true.
hiufwsiuefbwe   39   1 Reply
6 years ago
Discuss the structure of flagellar rotors and the gradients that power them. What will be an ...
Discuss the structure of flagellar rotors and the gradients that power them. What will be an ...
Discuss the structure of flagellar rotors and the gradients that power them.
 
  What will be an ideal response?
hiufwsiuefbwe   46   2 Replies
6 years ago
Order the reaction sequence for the involvement of free actin, free myosin and ATPase activity on ...
Order the reaction sequence for the involvement of free actin, free myosin and ATPase activity on ...
Order the reaction sequence for the involvement of free actin, free myosin and ATPase activity on each other.
 
  A. Actin binds and activates ATPase activity by stimulating release of Pi and ADP.
  B. In the absence of actin, the add
hiufwsiuefbwe   45   1 Reply
6 years ago
Explain how the CRISPR/Cas9 system can be used to edit the genome.
Explain how the CRISPR/Cas9 system can be used to edit the genome.
Explain how the CRISPR/Cas9 system can be used to edit the genome.
 
  What will be an ideal response?
hiufwsiuefbwe   90   2 Replies
6 years ago
The most promising vector for human gene therapy is ____.
The most promising vector for human gene therapy is ____.
The most promising vector for human gene therapy is ____.
 
  a. yeast
  b. E coli
  c. human papilloma virus
  d. adenovirus
  e. bacteriophage
hiufwsiuefbwe   48   1 Reply
6 years ago
What would be the 9-residue primer used to amplify: 5'-ATCGACGTTACGCTACATAGCATAAGGCTT-3'
What would be the 9-residue primer used to amplify: 5'-ATCGACGTTACGCTACATAGCATAAGGCTT-3'
What would be the 9-residue primer used to amplify: 5'-ATCGACGTTACGCTACATAGCATAAGGCTT-3'
 
  a. 5'-TAGCTGCAA-3'
  b. 5'-AAGCCTTAT-3'
  c. 5'-UAGCUGCAA-3'
  d. 5'-AAGCCUUAU-3'
  e. 5'-TGCGATGTA-3'
hiufwsiuefbwe   26   2 Replies
6 years ago
Individual amino acids are attached to their corresponding tRNAs:
Individual amino acids are attached to their corresponding tRNAs:
Individual amino acids are attached to their corresponding tRNAs:
 
  a. through an ester linkage to the 3'-OH in the acceptor stem.
  b. through an amide linkage to the anticodon loop.
  c. through an amide linkage to the adenin
hiufwsiuefbwe   40   1 Reply
6 years ago
Nucleic acid hybridization is a commonly employed procedure in molecular biology to investigate all ...
Nucleic acid hybridization is a commonly employed procedure in molecular biology to investigate all ...
Nucleic acid hybridization is a commonly employed procedure in molecular biology to investigate all EXCEPT:
 
  a. evolutionary relationships.
  b. specific genes against a vast background.
  c. specific probe based isolation of
hiufwsiuefbwe   58   2 Replies
6 years ago
SsDNA will renature requiring ____ of the DNA strands into a dsDNA and this is called ____ which ...
SsDNA will renature requiring ____ of the DNA strands into a dsDNA and this is called ____ which ...
ssDNA will renature requiring ____ of the DNA strands into a dsDNA and this is called ____ which occurs best if the temperature is ____ Tm but warm enough to promote diffusion of the DNA molecules.
 
  a. hydrolysis; reannealing; below
hiufwsiuefbwe   44   1 Reply
6 years ago
Of the following, which would contain the largest amount of fatty acids with trans double bonds? ...
Of the following, which would contain the largest amount of fatty acids with trans double bonds? ...
Of the following, which would contain the largest amount of fatty acids with trans double bonds?
 
  a. the fatty acid on carbon 1 of the glycerol of phosphatidylcholine
  b. butter
  c. canola oil
  d. the 2 lb, 99 cent pac
hiufwsiuefbwe   41   2 Replies
6 years ago
Explain how proteoglycans make cartilage flexible and resilient.
Explain how proteoglycans make cartilage flexible and resilient.
Explain how proteoglycans make cartilage flexible and resilient.
 
  What will be an ideal response?
hiufwsiuefbwe   34   2 Replies
6 years ago
A gas has a volume of 36.0 L and a pressure of 750. torr when the temperature is 10. C. What is the ...
A gas has a volume of 36.0 L and a pressure of 750. torr when the temperature is 10. C. What is the ...
A gas has a volume of 36.0 L and a pressure of 750. torr when the temperature is 10. °C.  What is the pressure if the volume changes to 15.0 L and the temperature changes to 78 °C, if the amount of gas stays the same?
hlturner75   91   1 Reply
2 years ago
The name of NaOH is sodium hydroxide.
The name of NaOH is sodium hydroxide.
The name of NaOH is sodium hydroxide.

▸ true

▸ false
hlturner75   60   1 Reply
2 years ago
One essential building block of aspirin, ibuprofen, and acetaminophen is the benzene ring.
One essential building block of aspirin, ibuprofen, and acetaminophen is the benzene ring.
One essential building block of aspirin, ibuprofen, and acetaminophen is the benzene ring.

▸ true

▸ false
hlturner75   96   1 Reply
2 years ago
Which of the following would be most likely to be deficient in at least one essential amino acid?
Which of the following would be most likely to be deficient in at least one essential amino acid?
Which of the following would be most likely to be deficient in at least one essential amino acid?

▸ milk

▸ beans

▸ ham

▸ eggs

▸ steak
hlturner75   65   1 Reply
2 years ago
Could there be an informational molecule with even fewer than four building bloc
Could there be an informational molecule with even fewer than four building bloc
Proteins have 20 building blocks (amino acids) and DNA has only four (nucleotides), yet the “messages” in the two sequences have the same information content and are translatable. Could there be an informational molecule with even fewer than four bui
Hog95   578   2 Replies
11 years ago
Describe the three jobs of RNA in this process.
Describe the three jobs of RNA in this process.
The three roles of RNA described in the text all deal with protein synthesis, that is, making chains of amino acids having the correct sequence. Describe the three jobs of RNA in this process.
Hog95   2274   2 Replies
11 years ago
As will be seen in succeeding chapters, enzymes provide a specific binding site
As will be seen in succeeding chapters, enzymes provide a specific binding site
As will be seen in succeeding chapters, enzymes provide a specific binding site for substrates where one or more chemical steps can be carried out. Often these sites are designed to exclude water. Suppose that at a binding site, a negatively charged
Hog95   2350   2 Replies
11 years ago
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