Biochemistry

Which of the following is a similarity between ion-exchange chromatography and affinity ...

Which of the following is a similarity between ion-exchange chromatography and affinity ...

Which of the following is a similarity between ion-exchange chromatography and affinity chromatography?
 a. Both use a column resin that binds the protein of interest.
 b. Both involve a less-specific interaction and are based on net charg

alexiswells   40   1 Reply

hentrus

Matrix-Assisted Laser Desorption Ionization is a type of _____ technique.

Matrix-Assisted Laser Desorption Ionization is a type of _____ technique.

Matrix-Assisted Laser Desorption Ionization is a type of _____ technique.
 a. electrophoresis
  b. ion exchange chromatography
  c. affinity chromatography
  d. mass spectrometry

Revolver38   40   1 Reply

Keeze

Inhibitors which bind covalently to specific amino acids are useful in determining which amino acids ...

Inhibitors which bind covalently to specific amino acids are useful in determining which amino acids ...

Inhibitors which bind covalently to specific amino acids are useful in determining which amino acids are in the active site of an enzyme.
 a. True
  b. False

rachelkimq   40   1 Reply

mwarner93

Which of the following is true about salicylate?

Which of the following is true about salicylate?

Which of the following is true about salicylate?
 a. it is a natural compound from the bark of a tree
  b. it is structurally similar to aspirin
  c. it stimulates the protein kinase, AMPK
  d. it has therapeutic effects in lower

adamsnaya   40   1 Reply

bunique227744

Which of the following characteristics makes for a good hydrogen bond donor?

Which of the following characteristics makes for a good hydrogen bond donor?

Which of the following characteristics makes for a good hydrogen bond donor?
 a. a high electronegativity
  b. a nonbonding pair of electrons
  c. both of the above
  d. neither of the above

ugai_kyut   40   2 Replies

ugai_kyut

This amino acid displays a free amino group in the peptide ALA-GLN-ARG-SER-HIS:

This amino acid displays a free amino group in the peptide ALA-GLN-ARG-SER-HIS:

This amino acid displays a free amino group in the peptide ALA-GLN-ARG-SER-HIS:
 a. ALA
  b. GLN
  c. SER
  d. HIS

Angela26kristin   40   1 Reply

NILLABRO

The genetic code (Multiple Choice)

The genetic code (Multiple Choice)

The genetic code
 a. determines the order of sugars in a polysaccharide
  b. has no effect on the sequence of amino acids in proteins
  c. is the means by which the blueprint for living organisms is passed from one generation to the n

avaaaaa   40   2 Replies

avaaaaa

If you chromatographed an oblong protein, why would it appear to be larger than a spherical protein ...

If you chromatographed an oblong protein, why would it appear to be larger than a spherical protein ...

If you chromatographed an oblong protein, why would it appear to be larger than a spherical protein of equal mass?
  What will be an ideal response?

kristina92293   40   1 Reply

garroghuu

What was the least effective step in the LDH purification?

What was the least effective step in the LDH purification?

What was the least effective step in the LDH purification?
  What will be an ideal response?

motee   40   1 Reply

ashleyjohnson81

If you add 3 mL of 1M HCl to the solution in problem 7, what will be the pH?

If you add 3 mL of 1M HCl to the solution in problem 7, what will be the pH?

If you add 3 mL of 1M HCl to the solution in problem 7, what will be the pH?
  What will be an ideal response?

Angela26kristin   40   1 Reply

bethclip

The phospholipid that is hydrolyzed to stimulate ceramide-activated protein kinase is:

The phospholipid that is hydrolyzed to stimulate ceramide-activated protein kinase is:

The phospholipid that is hydrolyzed to stimulate ceramide-activated protein kinase is:
 
  a. sphingomyelin.
  b. phosphatidylinositol-4,5-bisphosphate.
  c. phosphatidylinositol-4-phosphate.
  d. phosphatidylcholine.
 

linasottile   40   1 Reply

hellokristi4

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   40   1 Reply

sara6394

The ribosome and the ____ form a common conduit for transfer of the nascent protein through the ____ ...

The ribosome and the ____ form a common conduit for transfer of the nascent protein through the ____ ...

The ribosome and the ____ form a common conduit for transfer of the nascent protein through the ____ membrane.
 
  a. translocon; endoplasmic reticulum
  b. signal sequence; plasma
  c. EF-G; endoplasmic reticulum
  d. chape

nclariceb   40   1 Reply

dthomas18

Nonsense suppression is the production of isoacceptor tRNAs called ____ tRNAs that read ____ codons ...

Nonsense suppression is the production of isoacceptor tRNAs called ____ tRNAs that read ____ codons ...

Nonsense suppression is the production of isoacceptor tRNAs called ____ tRNAs that read ____ codons and insert an amino acid.
 
  a. nonsense; nonsense
  b. suppressor; nonsense
  c. suppressor; suppressive
  d. nonsense; su

ahh_risa   40   1 Reply

Andecv

All are common forms of DNA damage EXCEPT:

All are common forms of DNA damage EXCEPT:

All are common forms of DNA damage EXCEPT:
 
  a. replication errors resulting in a missing or incorrect base.
  b. bulges due to deletions or insertions.
  c. UV-induced base alterations, such as pyrimidine dimers.
  d. str

avaaaaa   40   1 Reply

achurch

Progression through the cell cycle for eukaryotic cells is regulated through a series of ____ that ...

Progression through the cell cycle for eukaryotic cells is regulated through a series of ____ that ...

Progression through the cell cycle for eukaryotic cells is regulated through a series of ____ that depend on ____, produced at one phase and degraded at another, that bind ____ which regulate specific proteins by phosphorylation.
 
  a. ch

Brooke.catlin   40   1 Reply

lhess431

SSBs are: (Multiple Choice)

SSBs are: (Multiple Choice)

SSBs are:
 
  a. substrates for DNA ligases.
  b. supercoil stabilizing bodies.
  c. single-stranded bodies called Okazaki fragments.
  d. single-stranded DNA binding proteins that prevent re-annealing.
  e. nucleases t

alshernandez   40   1 Reply

Findingskate61

During strictly anaerobic exercise, muscle cells preferentially:

During strictly anaerobic exercise, muscle cells preferentially:

During strictly anaerobic exercise, muscle cells preferentially:
 
  a. carboxylate pyruvate to oxaloacetate.
  b. oxidize pyruvate to acetyl-CoA.
  c. decarboxylate pyruvate to acetaldehyde.
  d. reduce pyruvate to lactate.

shoppa   40   1 Reply

alimorey

Thymidylate synthase synthesizes dTMP from ____ by ____ utilizing the coenzyme ____.

Thymidylate synthase synthesizes dTMP from ____ by ____ utilizing the coenzyme ____.

Thymidylate synthase synthesizes dTMP from ____ by ____ utilizing the coenzyme ____.
 
  a. dCTP; carboxylation; biotin
  b. dUMP; methylation; THF
  c. dCMP; methylation; THF
  d. dGMP; phosphorylation; ATP
  e. dUMP;

Jovaini   40   1 Reply

freddieg23

Enzymatic ribonucleotide reduction is accomplished via a free radical mechanism. Which of the ...

Enzymatic ribonucleotide reduction is accomplished via a free radical mechanism. Which of the ...

Enzymatic ribonucleotide reduction is accomplished via a free radical mechanism. Which of the following statements is true regarding this process?
 
  a. The substrate specificity site on the R1 homodimer determines if the enzyme is active

hawkins1346   40   1 Reply

John Ross

N-acetylglutamate functions in ammonium incorporation into metabolic intermediates as:

N-acetylglutamate functions in ammonium incorporation into metabolic intermediates as:

N-acetylglutamate functions in ammonium incorporation into metabolic intermediates as:
 
  a. a coenzyme for glutamine synthetase (GS).
  b. a competitive inhibitor for glutamine synthetase (GS).
  c. an allosteric activator for

kristina92293   40   1 Reply

physico

How many NAD+ are reduced in the -oxidation of stearoyl-CoA to form nine molecules of acetyl-CoA? ...

How many NAD+ are reduced in the -oxidation of stearoyl-CoA to form nine molecules of acetyl-CoA? ...

How many NAD+ are reduced in the -oxidation of stearoyl-CoA to form nine molecules of acetyl-CoA?
 
  a. 18
  b. 16
  c. 12
  d. 9
  e. 8

mahi   40   2 Replies

mahi

Which of the following reactions is catalyzed by a transketolase in the pentose phosphate pathway? ...

Which of the following reactions is catalyzed by a transketolase in the pentose phosphate pathway? ...

Which of the following reactions is catalyzed by a transketolase in the pentose phosphate pathway?
 
  I. fructose-6-P + glyceraldehyde-3-P  xylulose-5-P + erythrose-4-P
  II. erythrose-4-P + fructose-6-P  sedoheptulose-7-P + glyceral

lovelyturret   40   2 Replies

lovelyturret

How is photorespiration avoided in C-4 plants?

How is photorespiration avoided in C-4 plants?

How is photorespiration avoided in C-4 plants?
 
  a. decrease the concentration of phosphoglycolate.
  b. carry carbon dioxide towards an oxygen rich area of the plant.
  c. increase the concentration of ribulose-1,5-bisphosphat

linasottile   40   1 Reply

gidgetlynch@gma

All are correct statements about rubisco EXCEPT:

All are correct statements about rubisco EXCEPT:

All are correct statements about rubisco EXCEPT:
 
  a. ribulose-1,5-bisphosphate and carbon dioxide are both substrates.
  b. the catalytic site has both carboxylase and oxygenase activity.
  c. it is found in the chloroplast st

adamsnaya   40   1 Reply

haylsm112

Which of the following is the product of cyclic photophosphorylation?

Which of the following is the product of cyclic photophosphorylation?

Which of the following is the product of cyclic photophosphorylation?
 
  a. NADPH
  b. Molecular oxygen
  c. ATP
  d. ADP and Pi
  e. Electron gradient

kescobar5   40   1 Reply

Lettyyys

All are components of cytochrome c oxidase (complex IV) EXCEPT:

All are components of cytochrome c oxidase (complex IV) EXCEPT:

All are components of cytochrome c oxidase (complex IV) EXCEPT:
 
  a. CuA.
  b. CuB.
  c. Cyt c1.
  d. Cyt a3.
  e. Cyt a.

Larrhea   40   1 Reply

alimorey

Discuss the metabolites that can be synthesized from citrate in the tricarboxylic acid cycle. ...

Discuss the metabolites that can be synthesized from citrate in the tricarboxylic acid cycle. ...

Discuss the metabolites that can be synthesized from citrate in the tricarboxylic acid cycle.
 
  What will be an ideal response?

98lindsey   40   2 Replies

98lindsey

Under anaerobic conditions, skeletal muscle generates lactate from pyruvate to:

Under anaerobic conditions, skeletal muscle generates lactate from pyruvate to:

Under anaerobic conditions, skeletal muscle generates lactate from pyruvate to:
 
  a. lower the pH.
  b. promote release of oxygen from hemoglobin.
  c. generate additional ATP.
  d. be warning of muscle fatigue.
  e.

hawkins1346   40   1 Reply

hollyhateschool

Thioesters have higher ____ than that of oxygen esters.

Thioesters have higher ____ than that of oxygen esters.

Thioesters have higher ____ than that of oxygen esters.
 
  a. mobility
  b. electronegativity
  c. resonance
  d. positive G
  e. group transfer potential

Abessesen   40   1 Reply

omardr22

All of the coenzymes listed participate in electron transfer EXCEPT:

All of the coenzymes listed participate in electron transfer EXCEPT:

All of the coenzymes listed participate in electron transfer EXCEPT:
 
  a. FAD.
  b. biotin.
  c. NAD+.
  d. vitamin C.
  e. lipoic acid.

Griffinw42   40   1 Reply

achurch

Which of the following is the major advantage of a multi-enzyme complex?

Which of the following is the major advantage of a multi-enzyme complex?

Which of the following is the major advantage of a multi-enzyme complex?
 
  a. it's large size enables it to span an entire membrane
  b. the product of one enzyme is passed directly to the next enzyme without the possibility of diff

hawkins1346   40   1 Reply

Lex_Lex21

All are characteristics of metabolism EXCEPT:

All are characteristics of metabolism EXCEPT:

All are characteristics of metabolism EXCEPT:
 
  a. a process which synthesizes either energy or complex cellular substances.
  b. a process of intermediates.
  c. the conversion of food energy into energy of motion.
  d. a

Griffinw42   40   1 Reply

cstanish2

All are functions of microtubules EXCEPT:

All are functions of microtubules EXCEPT:

All are functions of microtubules EXCEPT:
 
  a. providing variations and maintenance of cell shape.
  b. formation of the mitotic spindle during cell division.
  c. unwinding DNA to single-stranded DNA (ssDNA).
  d. movemen

redheadprincess   40   1 Reply

Nickluna@msn.co

Explain how 2,3-bisphosphoglycerate (BPG) and O2 are mutually exclusive allosteric effectors for ...

Explain how 2,3-bisphosphoglycerate (BPG) and O2 are mutually exclusive allosteric effectors for ...

Explain how 2,3-bisphosphoglycerate (BPG) and O2 are mutually exclusive allosteric effectors for hemoglobin (Hb).
 
  What will be an ideal response?

kescobar5   40   2 Replies

kescobar5

Discuss zymogens.

Discuss zymogens.

Discuss zymogens.
 
  What will be an ideal response?

alshernandez   40   1 Reply

Program34

When O2 binds to heme in hemoglobin, the ____ ion is drawn into the plane of the ____ causing a ...

When O2 binds to heme in hemoglobin, the ____ ion is drawn into the plane of the ____ causing a ...

When O2 binds to heme in hemoglobin, the ____ ion is drawn into the plane of the ____ causing a conformational change that is transmitted to adjacent subunits enhancing the ____ for additional O2 binding.
 
  a. Mg2+; globin; planarity

starrlite81   40   1 Reply

ericpie13

All are true for low-barrier hydrogen bonds EXCEPT:

All are true for low-barrier hydrogen bonds EXCEPT:

All are true for low-barrier hydrogen bonds EXCEPT:
 
  a. The hydrogen is centered between the two heteroatoms.
  b. The interactions are more covalent.
  c. The bond order approaches 0.5 for both OH interactions.
  d. The

ugai_kyut   40   1 Reply

ksullivan042197

Which of the following statements regarding enzymes and transition states is true?

Which of the following statements regarding enzymes and transition states is true?

Which of the following statements regarding enzymes and transition states is true?
 
  a. stabilization of the transition state must be less than stabilization of ES for catalysis to occur
  b. binding of substrate to an enzyme often

Random   40   1 Reply

ericpie13

Discuss polymerase chain reaction-based (PCR-based) mutagenesis.

Discuss polymerase chain reaction-based (PCR-based) mutagenesis.

Discuss polymerase chain reaction-based (PCR-based) mutagenesis.
 
  What will be an ideal response?

lovelyturret   40   1 Reply

hollyhateschool