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Home Q & A Board Biology-Related Homework Help Biochemistry
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Protein synthesis proceeds in which direction?
Protein synthesis proceeds in which direction?
Protein synthesis proceeds in which direction?
 a. from the C-terminus to the N-terminus
  b. from the middle towards the two ends
  c. from the N-terminus to the C-terminus
  d. the direction varies from one protein to another
alshernandez   44   2 Replies
6 years ago
Which of the following proteins is a hormone?
Which of the following proteins is a hormone?
Which of the following proteins is a hormone?
 a. casein c. insulin
  b. hemoglobin d. all of these
rachelkimq   44   1 Reply
6 years ago
What designations are used to distinguish between the two forms of an allosteric enzyme?
What designations are used to distinguish between the two forms of an allosteric enzyme?
What designations are used to distinguish between the two forms of an allosteric enzyme?
 a.  and  c. R and S
  b. D and L d. R and T
avaaaaa   44   1 Reply
6 years ago
What name is given to the intermediate in an enzyme-catalyzed reaction?
What name is given to the intermediate in an enzyme-catalyzed reaction?
What name is given to the intermediate in an enzyme-catalyzed reaction?
 a. apoenzyme c. enzyme-substrate complete
  b. coenzyme d. zymogen
lacinb30   44   1 Reply
6 years ago
Which of the following is true of the receptors for steroid hormones?
Which of the following is true of the receptors for steroid hormones?
Which of the following is true of the receptors for steroid hormones?
 a. They are hydrophobic.
  b. They are proteins.
  c. both a and b
  d. neither a nor b
alshernandez   44   1 Reply
6 years ago
Which of the following is an antagonist of the N-methyl-D-aspartate (NMDA) site?
Which of the following is an antagonist of the N-methyl-D-aspartate (NMDA) site?
Which of the following is an antagonist of the N-methyl-D-aspartate (NMDA) site?
 a. -aminobutyric acid c. taurine
  b. phenylcyclidine d. none of these
Brooke.catlin   44   1 Reply
6 years ago
How many sticky ends are produced if a certain restriction endonuclease cleaves a plasmid at three ...
How many sticky ends are produced if a certain restriction endonuclease cleaves a plasmid at three ...
How many sticky ends are produced if a certain restriction endonuclease cleaves a plasmid at three different locations ?
 a. 3 c. 8
  b. 6 d. 9
Pooh bear   44   1 Reply
6 years ago
It is now known that there are approximately how many genes in the human genome?
It is now known that there are approximately how many genes in the human genome?
It is now known that there are approximately how many genes in the human genome?
 a. 10,000 c. 100,000
  b. 30,000 d. 1,000,000
Greenspotsock   44   1 Reply
6 years ago
Which metal is found in many transcription factors which have metal-binding fingers?
Which metal is found in many transcription factors which have metal-binding fingers?
Which metal is found in many transcription factors which have metal-binding fingers?
 a. Co c. Fe
  b. Cu d. Zn
Abessesen   44   1 Reply
6 years ago
Which of the following is not one of the 20 standard amino acids which are the building blocks of ...
Which of the following is not one of the 20 standard amino acids which are the building blocks of ...
Which of the following is not one of the 20 standard amino acids which are the building blocks of proteins, but is in fact sometimes found in proteins?
 a. citrulline c. selenocysteine
  b. ornithine d. xanadine
omrglss   44   1 Reply
6 years ago
What happens to the mRNA when it binds to the two ribosomal bodies?
What happens to the mRNA when it binds to the two ribosomal bodies?
What happens to the mRNA when it binds to the two ribosomal bodies?
 a. Nothing, it retains its original three-dimensional shape.
  b. It forms a double helix.
  c. It is stretched out.
  d. It splits into two parts, each of whic
hiufwsiuefbwe   44   1 Reply
6 years ago
Which amino acids are found at the C-terminal domain of pol II?
Which amino acids are found at the C-terminal domain of pol II?
Which amino acids are found at the C-terminal domain of pol II?
 a. alanine and serine c. glycine and threonine
  b. alanine and glycine d. serine and threonine
ahh_risa   44   1 Reply
6 years ago
The accumulation of ketone bodies in the blood results in which of the following?
The accumulation of ketone bodies in the blood results in which of the following?
The accumulation of ketone bodies in the blood results in which of the following?
 a. a decrease in Na+ in the interstitial fluids
  b. an increase in the pH of the blood
  c. both a and b
  d. neither a nor b
alexiswells   44   1 Reply
6 years ago
How many high-energy phosphate bonds are cleaved during activation of fatty acid -oxidation?
How many high-energy phosphate bonds are cleaved during activation of fatty acid -oxidation?
How many high-energy phosphate bonds are cleaved during activation of fatty acid -oxidation?
 a. 0 c. 2
  b. 1 d. 3
Revolver38   44   1 Reply
6 years ago
How many different complexes are involved in the electron and H+ transport chain?
How many different complexes are involved in the electron and H+ transport chain?
How many different complexes are involved in the electron and H+ transport chain?
 a. 1 c. 3
  b. 2 d. 4
nclariceb   44   2 Replies
6 years ago
Which of the following is the pathway used by cells to obtain energy from fatty acids?
Which of the following is the pathway used by cells to obtain energy from fatty acids?
Which of the following is the pathway used by cells to obtain energy from fatty acids?
 a. -oxidation c. -oxidation
  b. -reduction d. -reduction
Pooh bear   44   1 Reply
6 years ago
The reaction of glutamate to form -ketoglutarate is an example of which of the following?
The reaction of glutamate to form -ketoglutarate is an example of which of the following?
The reaction of glutamate to form -ketoglutarate is an example of which of the following?
 a. reductive amination c. oxidative amination
  b. reductive deamination d. oxidative deamination
ugai_kyut   44   1 Reply
6 years ago
Which of the following is true of farnesyl pyrophosphate and geranyl pyrophosphate?
Which of the following is true of farnesyl pyrophosphate and geranyl pyrophosphate?
Which of the following is true of farnesyl pyrophosphate and geranyl pyrophosphate?
 a. They both contain two cis double bonds.
  b. They both contain two trans double bonds.
  c. They both contain one cis double bond and one trans do
avaaaaa   44   1 Reply
6 years ago
The dark reactions of photosynthesis consume which of the following?
The dark reactions of photosynthesis consume which of the following?
The dark reactions of photosynthesis consume which of the following?
 a. carbon dioxide c. both a and b
  b. water d. neither a nor b
adamsnaya   44   1 Reply
6 years ago
Where in the cell are the enzymes that catalyze the common metabolic pathway synthesized?
Where in the cell are the enzymes that catalyze the common metabolic pathway synthesized?
Where in the cell are the enzymes that catalyze the common metabolic pathway synthesized?
 a. in the cytosol c. in the mitochondria
  b. in the Golgi bodies d. in the nucleus
tarapratt95   44   1 Reply
6 years ago
Which of the following is true when a normal biosynthetic pathway is blocked?
Which of the following is true when a normal biosynthetic pathway is blocked?
Which of the following is true when a normal biosynthetic pathway is blocked?
 a. The organism can always make the necessary compounds by using the reverse of the blocked synthetic pathway.
  b. The organism can never make the necessary co
ksultz   44   1 Reply
6 years ago
Consider the hydrolysis reaction catalyzed by the enzyme carboxypeptidase. Which location in the ...
Consider the hydrolysis reaction catalyzed by the enzyme carboxypeptidase. Which location in the ...
Consider the hydrolysis reaction catalyzed by the enzyme carboxypeptidase. Which location in the diagram represented by a letter would be the site of this type of hydrolysis?
 a. A
  b. B
  c. C
  d. D
  e. Hydrolysis could
Greenspotsock   44   1 Reply
6 years ago
Deficiency of which mineral is associated with pernicious anemia?
Deficiency of which mineral is associated with pernicious anemia?
Deficiency of which mineral is associated with pernicious anemia?
 a. cobalt c. iron
  b. copper d. zinc
sophie0209   44   1 Reply
6 years ago
Deficiency of which of the following is associated with beriberi?
Deficiency of which of the following is associated with beriberi?
Deficiency of which of the following is associated with beriberi?
 a. vitamin A c. vitamin C
  b. vitamin B1 d. vitamin D
bronzeclock   44   1 Reply
6 years ago
Which of the following amino acids is missing from gelatin?
Which of the following amino acids is missing from gelatin?
Which of the following amino acids is missing from gelatin?
 a. lysine c. valine
  b. tryptophan d. None, gelatin is a complete protein.
linasottile   44   1 Reply
6 years ago
Which of the following hold the chains of an immunoglobulin together?
Which of the following hold the chains of an immunoglobulin together?
Which of the following hold the chains of an immunoglobulin together?
 a. disulfide bridges c. hydrophobic interactions
  b. hydrogen bonding d. ionic bonds
ksultz   44   1 Reply
6 years ago
Hemoglobin is an example of which of the following?
Hemoglobin is an example of which of the following?
Hemoglobin is an example of which of the following?
 a. an allosteric protein c. both a and b
  b. a conjugated protein d. neither a nor b
adamsnaya   44   2 Replies
6 years ago
In the synthesis of purine nucleotides, :
In the synthesis of purine nucleotides, :
In the synthesis of purine nucleotides,
 A) the ring system is bonded to ribose phosphate only after the complete purine ring is assembled
  B) the six-membered ring of the purine is assembled first, then the five-membered ring
  C)
kekebab001   44   1 Reply
6 years ago
Which of the following amino acids is not glucogenic?
Which of the following amino acids is not glucogenic?
Which of the following amino acids is not glucogenic?
 A) Glycine.
  B) Alanine.
  C) Aspartic Acid.
  D) Leucine.
  E) All of these amino acids are glucogenic.
stalmoney   44   1 Reply
6 years ago
Glycine, alanine, serine, histidine, tryptophan, CTP, AMP, and carbamoyl-phosphate all have what in ...
Glycine, alanine, serine, histidine, tryptophan, CTP, AMP, and carbamoyl-phosphate all have what in ...
Glycine, alanine, serine, histidine, tryptophan, CTP, AMP, and carbamoyl-phosphate all have what in common?
 A) They are all inhibitors of glutamine synthase
  B) They are all amino acids
  C) They are all cofactors in transaminatio
lacinb30   44   1 Reply
6 years ago
Nitrogenase uses which of the following cofactors?
Nitrogenase uses which of the following cofactors?
Nitrogenase uses which of the following cofactors?
 A) molybdenum-iron-sulfur complex
  B) biotin
  C) pyridoxal phosphate
  D) thiamine pyrophosphate
  E) none of these
yjuhen   44   1 Reply
6 years ago
The essential enzyme for the C4 pathway is
The essential enzyme for the C4 pathway is
The essential enzyme for the C4 pathway is
 A) ribulose bisphosphate carboxylase:oxygenase
  B) phosphoenolpyruvate carboxylase
  C) ferredoxin-thioredoxin reductase
  D) glyoxylate oxygenase
  E) none of these
sophie0209   44   1 Reply
6 years ago
In chloroplasts, : (Multiple Choice)
In chloroplasts, : (Multiple Choice)
In chloroplasts,
 A) the light reactions take place in the thylakoid disks, whereas the dark reactions occur in the stroma
  B) the dark reactions take place in the thylakoid disks, whereas the light reactions occur in the stroma
 
Jnortontruvisio   44   1 Reply
6 years ago
Which of the following best describes carnitine?
Which of the following best describes carnitine?
Which of the following best describes carnitine?
 A) It transports fatty acids across the inner mitochondrial membrane for breakdown.
  B) It transports acetyl-CoA to the cytosol for fatty acid synthesis.
  C) It's a precursor of ch
hiufwsiuefbwe   44   1 Reply
6 years ago
Which of the following describes a use for acetyl-CoA as an important intermediate in metabolism? ...
Which of the following describes a use for acetyl-CoA as an important intermediate in metabolism? ...
Which of the following describes a use for acetyl-CoA as an important intermediate in metabolism?
 A) Breakdown to CO2 and water, yielding much energy.
  B) Synthesis of terpenes and steroids.
  C) Synthesis of oxaloacetate in plant
Revolver38   44   2 Replies
6 years ago
Thiamine pyrophosphate carries a ____ carbon unit. :
Thiamine pyrophosphate carries a ____ carbon unit. :
Thiamine pyrophosphate carries a ____ carbon unit.
 A) 1
  B) 2
  C) 3
  D) 4
hawkins1346   44   2 Replies
6 years ago
If an individual lacked the debranching enzyme, the effect would be:
If an individual lacked the debranching enzyme, the effect would be:
If an individual lacked the debranching enzyme, the effect would be:
 A) the individual could not make glycogen
  B) the individual could make glycogen but not store it
  C) the individual would not be able to utilize any glucose fr
stalmoney   44   1 Reply
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
starrlite81   44   2 Replies
6 years ago
Which of the following monosaccharides is an aldose :
Which of the following monosaccharides is an aldose :
Which of the following monosaccharides is an aldose
 A) glucose
  B) galactose
  C) mannose
  D) ribose
  E) all of them
MB0727   44   1 Reply
6 years ago
Which of the following are examples of endergonic processes?
Which of the following are examples of endergonic processes?
Which of the following are examples of endergonic processes?
 A) protein synthesis and active transport
  B) protein synthesis and oxidation of carbohydrates
  C) active transport and oxidation of carbohydrates
  D) oxidation
Miller123   44   1 Reply
6 years ago
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