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Home Q & A Board Biology-Related Homework Help Biochemistry
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What is the overall net charge on the peptide lys-lys-ser-glu at pH 7.0?
What is the overall net charge on the peptide lys-lys-ser-glu at pH 7.0?
What is the overall net charge on the peptide lys-lys-ser-glu at pH 7.0?
 
  a. +2
  b. +1
  c. 0
  d. 1
  e. 2
jennjenn563   40   2 Replies
6 years ago
Which of the following statements regarding ATP is true?
Which of the following statements regarding ATP is true?
Which of the following statements regarding ATP is true?
 
  a. the energy of hydrolysis is the same for all of the phosphate groups of the molecule
  b. despite the very exergonic nature of the hydrolysis, ATP does not hydrolyze spon
Miller123   40   1 Reply
6 years ago
12 is what percent of 36?
12 is what percent of 36?
12 is what percent of 36?

▸ 3%

▸ 30%

▸ 330%

▸ 12%

▸ 33%
yaqub   40   1 Reply
2 years ago
Which individual won a Nobel Prize for his landmark work in sequencing the protein insulin?
Which individual won a Nobel Prize for his landmark work in sequencing the protein insulin?
Which individual won a Nobel Prize for his landmark work in sequencing the protein insulin?
   A) Pauling     B) McClintock     C) Gilbert     D) Maxam     E) Sanger
jackamus   41   2 Replies
6 years ago
What is the advantage of having 20 different amino acids available to form proteins?
What is the advantage of having 20 different amino acids available to form proteins?
What is the advantage of having 20 different amino acids available to form proteins?
tulao68   41   1 Reply
6 years ago
Genes can be inserted into eukaryotic cells by:
Genes can be inserted into eukaryotic cells by:
Genes can be inserted into eukaryotic cells by
A)   viruses.    D)   All of the above.
B)   chemical treatment.    E)   None of the above.
C)   microinjection.
jackamus   41   2 Replies
6 years ago
What is the difference between a simple scoring system for alignment and the Blosum-62 matrix?
What is the difference between a simple scoring system for alignment and the Blosum-62 matrix?
What is the difference between a simple scoring system for alignment and the
Blosum-62 matrix?
jackamus   41   1 Reply
6 years ago
Which of the following is correct concerning the following equilibria?CO2 + H2O H2CO3A)An ...
Which of the following is correct concerning the following equilibria?CO2 + H2O H2CO3A)An ...
Which of the following is correct concerning the following equilibria?
CO2  +  H2O     H2CO3
A)   An increase in the pressure of CO2 will result in a decrease of pH.
B)   This reaction is catalyzed by carbonic anhydrase
jackamus   41   2 Replies
6 years ago
A _______________ is a stereoisomer that is not a mirror image.
A _______________ is a stereoisomer that is not a mirror image.
A _______________ is a stereoisomer that is not a mirror image.
jackamus   41   2 Replies
6 years ago
How do some viruses gain entry into specific cells?
How do some viruses gain entry into specific cells?
How do some viruses gain entry into specific cells?
A)   by attaching to ion channels
B)   by cleaving the glycosidic bonds and altering protein shapes
C)   by binding to glycoproteins on the cell surface that are unique to specific cells
tulao68   41   1 Reply
6 years ago
What does the notation 18:2 for fatty acids imply?
What does the notation 18:2 for fatty acids imply?
What does the notation 18:2 for fatty acids imply?
jackamus   41   1 Reply
6 years ago
Which of the following is the smallest ion?
Which of the following is the smallest ion?
Which of the following is the smallest ion?
   A) Cs+     B) Na+     C) K+     D) Rb+     E) Li+
tulao68   41   1 Reply
6 years ago
Many pumps are members of the P-type ATPases. If you discovered a new enzyme with similar function, ...
Many pumps are members of the P-type ATPases. If you discovered a new enzyme with similar function, ...
Many pumps are members of the P-type ATPases. If you discovered a new enzyme with similar function, what reaction product would help convince you that your enzyme was a member of this family?
jackamus   41   1 Reply
6 years ago
Since we know that certain amino acids are likely to be found in membranes, why is it so difficult ...
Since we know that certain amino acids are likely to be found in membranes, why is it so difficult ...
Since we know that certain amino acids are likely to be found in membranes, why is it so difficult to predict the structure of a channel protein?
tulao68   41   1 Reply
6 years ago
What are some of the functions of gap cells?
What are some of the functions of gap cells?
What are some of the functions of gap cells?
jackamus   41   2 Replies
6 years ago
What reaction is catalyzed by aldolase?
What reaction is catalyzed by aldolase?
What reaction is catalyzed by aldolase?
A)   isomerization of DHAP to GAP
B)   ligation of GAP and DHAP
C)   reversible cleavage of F-1,6-BP to DHAP and GAP
D)   cleavage of DHAP to GAP
E)   irreversible aldol condensation of DHAP
jackamus   41   1 Reply
6 years ago
What is the net ATP obtained from one cytoplasmic NADH when it is reoxidized by the ...
What is the net ATP obtained from one cytoplasmic NADH when it is reoxidized by the ...
What is the net ATP obtained from one cytoplasmic NADH when it is reoxidized by the electron-transport chain using the glycerol 3-phosphate shuttle?
   A)  2.5.     B)  1.5.     C)  2.0.     D)  1
tulao68   41   1 Reply
6 years ago
In membrane lipid biosynthesis, the nucleotide ________________ is used to activate the components ...
In membrane lipid biosynthesis, the nucleotide ________________ is used to activate the components ...
In membrane lipid biosynthesis, the nucleotide ________________ is used to activate the components of the reaction.
tulao68   41   1 Reply
6 years ago
What are the typical (normal) plasma and brain concentrations of glucose?
What are the typical (normal) plasma and brain concentrations of glucose?
What are the typical (normal) plasma and brain concentrations of glucose?
jackamus   41   1 Reply
6 years ago
What mechanism is used to ensure sufficient amino acids are available for protein biosynthesis?
What mechanism is used to ensure sufficient amino acids are available for protein biosynthesis?
What mechanism is used to ensure sufficient amino acids are available for protein biosynthesis?
jackamus   41   2 Replies
6 years ago
The tertiary structures in DNA are created by the process known as ______________.
The tertiary structures in DNA are created by the process known as ______________.
The tertiary structures in DNA are created by the process known as ______________.
jackamus   41   2 Replies
6 years ago
How are single-stranded regions of DNA maintained?
How are single-stranded regions of DNA maintained?
How are single-stranded regions of DNA maintained?
jackamus   41   1 Reply
6 years ago
Odor and some taste sensations are dependent on the stimulus of specific 7TM receptors causing ...
Odor and some taste sensations are dependent on the stimulus of specific 7TM receptors causing ...
Odor and some taste sensations are dependent on the stimulus of specific 7TM receptors causing triggering of _________________ stimulation.
tulao68   41   1 Reply
6 years ago
The biased random walk motion of bacteria is the result of:
The biased random walk motion of bacteria is the result of:
The biased random walk motion of bacteria is the result of
A)   swimming with less tumbling when Ca2+ levels are low.
B)   swimming with more tumbling when moving away from a chemorepellant.
C)   swimming with more tumbling when ATP binds
tulao68   41   1 Reply
6 years ago
What is the cause of Charcot-Marie-tooth disease?
What is the cause of Charcot-Marie-tooth disease?
What is the cause of Charcot-Marie-tooth disease?
jackamus   41   1 Reply
6 years ago
There is no cure for end-stage COPD. (True or false?)
There is no cure for end-stage COPD. (True or false?)
There is no cure for end-stage COPD.
 
 Indicate whether the statement is true or false
Storm   41   2 Replies
6 years ago
Many of the infectious diseases can be prevented by maintaining a regular immunization schedule. ...
Many of the infectious diseases can be prevented by maintaining a regular immunization schedule. ...
Many of the infectious diseases can be prevented by maintaining a regular immunization schedule.
 
 Indicate whether the statement is true or false
RENCEE72   41   1 Reply
6 years ago
Complications of endometriosis include: (Multiple Choice)
Complications of endometriosis include: (Multiple Choice)
Complications of endometriosis include:
 A) infertility.
  B) an ectopic pregnancy.
  C) a spontaneous abortion.
  D) all of the above.
stroman54   41   1 Reply
6 years ago
Symptoms of thrombocytopenia include all of the following EXCEPT:
Symptoms of thrombocytopenia include all of the following EXCEPT:
Symptoms of thrombocytopenia include all of the following EXCEPT:
 A) ecchymosis.
  B) epistaxis.
  C) petechiae.
  D) fatigue.
stroman54   41   1 Reply
6 years ago
Candidiasis is commonly known as a yeast infection. (True or false?)
Candidiasis is commonly known as a yeast infection. (True or false?)
Candidiasis is commonly known as a yeast infection.
 
 Indicate whether the statement is true or false
ejohnson3310   41   2 Replies
6 years ago
How many essential fatty acids are there?
How many essential fatty acids are there?
How many essential fatty acids are there?
 A) 0
  B) 2
  C) 3
  D) 10
LRotundo   41   1 Reply
6 years ago
While explaining to the parents of a child diagnosed with postural scoliosis, the nurse will ...
While explaining to the parents of a child diagnosed with postural scoliosis, the nurse will ...
While explaining to the parents of a child diagnosed with postural scoliosis, the nurse will emphasize which of the following concepts? This form of scoliosis:
 
  A) Compresses vertebrae, causing nerve damage in distal limbs
  B) Can
thisisstupidash   41   1 Reply
6 years ago
Which of the following clients are at risk for developing and acute episode of angle-closure ...
Which of the following clients are at risk for developing and acute episode of angle-closure ...
Which of the following clients are at risk for developing and acute episode of angle-closure glaucoma? Select all that apply.
 
  A) A 60-year-old female emotionally devastated after divorcing her husband of 35 years
  B) A soldier or
littlej_dvine   41   1 Reply
6 years ago
Which of the following clients should the nurse observe most closely for the signs and symptoms of ...
Which of the following clients should the nurse observe most closely for the signs and symptoms of ...
Which of the following clients should the nurse observe most closely for the signs and symptoms of paralytic ileus?
 
  A) A client who is first day postoperative following gallbladder surgery
  B) A client whose acute diarrhea has ne
arichman7730   41   1 Reply
6 years ago
A client has arrived in the emergency department in cardiogenic shock. Which of the following ...
A client has arrived in the emergency department in cardiogenic shock. Which of the following ...
A client has arrived in the emergency department in cardiogenic shock. Which of the following assessment findings confirm this diagnosis? Select all that apply.
 
  A) Bright red color noted in the nail beds and lips
  B) Less than 5
clcharleston   41   1 Reply
6 years ago
At the cellular level, cardiac muscle cells respond to an increase in ventricular volume to the ...
At the cellular level, cardiac muscle cells respond to an increase in ventricular volume to the ...
At the cellular level, cardiac muscle cells respond to an increase in ventricular volume to the point of overload by: Select all that apply.
 
  A) Elongating the cardiac muscle cells
  B) Thickening of the individual myocytes
 
jldobro   41   2 Replies
6 years ago
A 40-year-old female has been diagnosed with hepatocellular carcinoma. When asked what causes this ...
A 40-year-old female has been diagnosed with hepatocellular carcinoma. When asked what causes this ...
A 40-year-old female has been diagnosed with hepatocellular carcinoma. When asked what causes this cancer, the physician looks at the history and responds, I see in your history, you have had:
 
  A) Hepatitis B related to IV drug use as a
Haydena   41   1 Reply
6 years ago
Which characteristic signs does the nurse refer to while teaching about Beck's triad? Select all ...
Which characteristic signs does the nurse refer to while teaching about Beck's triad? Select all ...
Which characteristic signs does the nurse refer to while teaching about Beck's triad? Select all that apply.
 
  1. Stridor breath sounds
  2. Low blood pressure
  3. Distant heart sounds
  4. Wheezing lung sounds
  5.
Storm   41   1 Reply
6 years ago
During an assessment, a nurse observes the signs of diminished secondary sexual characteristics in ...
During an assessment, a nurse observes the signs of diminished secondary sexual characteristics in ...
During an assessment, a nurse observes the signs of diminished secondary sexual characteristics in an adult male client. What should be the appropriate nursing action?
 
  1. Perform a digital rectal examination.
  2. Check the prosta
kate lynn   41   1 Reply
6 years ago
Which test is most commonly used to diagnose varicose vein? 1. D-dimer test 2. Duplex ultrasound ...
Which test is most commonly used to diagnose varicose vein? 1. D-dimer test 2. Duplex ultrasound ...
Which test is most commonly used to diagnose varicose vein?
 
  1. D-dimer test
  2. Duplex ultrasound
  3. Wells criteria
  4. Magnetic resonance imaging
tmontes00   41   1 Reply
6 years ago
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