Biochemistry

The structure of tumor necrosis factor includes which of the following?

The structure of tumor necrosis factor includes which of the following?

The structure of tumor necrosis factor includes which of the following?
 a. four helical segments
  b. only -pleated sheet
  c. both -helix and -pleated sheet
  d. four cysteine residues which form two disulfide bridges

sarah_verduzco1   103   2 Replies

rosieliu

Calculate the pH of a 0.2 M acetate buffer (pKa = 4.77) that contains twice as much acid as ...

Calculate the pH of a 0.2 M acetate buffer (pKa = 4.77) that contains twice as much acid as ...

Calculate the pH of a 0.2 M acetate buffer (pKa = 4.77) that contains twice as much acid as conjugate base.

alpsi   177   2 Replies

5 / 5

mielkematt

Most fat in our adipose tissue is in the form of:

Most fat in our adipose tissue is in the form of:

Most fat in our adipose tissue is in the form of:
A) phospholipids.
B) cholesterol.
C) triglycerides.
D) steroids.

Cali Fornia   320   3 Replies

SDGOMEZ11

Which of the following will give a positive test with Tollens' reagent?

Which of the following will give a positive test with Tollens' reagent?

Which of the following will give a positive test with Tollens' reagent?
 a. aldehydes c. both a and b
  b. carboxylic acids d. neither a nor b

kekebab001   95   4 Replies

bio_man

If the specific rotation of the (R)-enantiomer of a compound is -4.8o, what will the specific ...

If the specific rotation of the (R)-enantiomer of a compound is -4.8o, what will the specific ...

If the specific rotation of the (R)-enantiomer of a compound is -4.8o, what will the specific rotation be for a racemic mixture of the compound?
 a. +4.8o c. 00
  b. -4.8o d. There is no way to tell.

ugai_kyut   132   3 Replies

5 / 5

bio_man

What exact major should i pursue if i want to be a Mycologist?

What exact major should i pursue if i want to be a Mycologist?

Hello friends, I am an active duty marine retiring in 2019. I am deeply interested in the study of fungi (mycology) I am seeking answers on what exact major or majors I should pursue in order to have a career in mycology. I am from Michigan but I am

blaydweedon   140   1 Reply

bio_man

How can I raise my Biochemistry grade

How can I raise my Biochemistry grade

Hi. I didn't get a really good grade on my Biochem assessment and it brought my grade to an 80. Grades close on the 9th and I don't know what to do to raise it! Please give me any advise. Anything would be helpful. Thanks!

-An an

(Anonymous)   175   2 Replies

be beautiful

What would happen if the plant material consumed by the herbivore were D-isoform

What would happen if the plant material consumed by the herbivore were D-isoform

what would happen if the plant material consumed by the herbivore were D-isoform

letso moshidi   144   1 Reply

bio_man

What is the first step in gene expression control?

What is the first step in gene expression control?

What is the first step in gene expression control?
A)   control of translation    D)   control of replication
B)   control of mRNA processing    E)   None of the above.
C)   control of transcription

tulao68   126   2 Replies

BigEm

How many monosaccharides are connected to each other in an oligosaccharide?

How many monosaccharides are connected to each other in an oligosaccharide?

How many monosaccharides are connected to each other in an oligosaccharide?
A) 1
B) 2
C) 3-9
D) more than 9

Neves   298   3 Replies

Reather1

Which denaturing agent primarily acts by disrupting hydrophobic interactions within the protein?

Which denaturing agent primarily acts by disrupting hydrophobic interactions within the protein?

Which denaturing agent primarily acts by disrupting hydrophobic interactions within the protein?

Reather1   109   1 Reply

bio_man

Heavy metals such as Pb2+ or Hg2+ denature proteins by reacting with:

Heavy metals such as Pb2+ or Hg2+ denature proteins by reacting with:

Heavy metals such as Pb2+ or Hg2+ denature proteins by reacting with:

Reather1   110   1 Reply

bio_man

The transport of nitrogen molecules across a cell membrane occurs via:

The transport of nitrogen molecules across a cell membrane occurs via:

The transport of nitrogen molecules across a cell membrane occurs via:
A) passive diffusion
B) facilitated transport
C) active transport
D) all of the above

Neves   779   3 Replies

yeetyoteyute

The execution of a voluntary motor task involves a series of steps. Which of the following presents

The execution of a voluntary motor task involves a series of steps. Which of the following presents

The execution of a voluntary motor task involves a series of steps. Which of the following presents those steps in the correct order?
A) program, intent, feedback, execute
B) intent, feedback, program, execute
C) feedback, intent, prog

SalwanJ   147   4 Replies

Tobias Tr

Matter is nearly incompressible in which of these states?

Matter is nearly incompressible in which of these states?

Matter is nearly incompressible in which of these states?
A) Gas
B) Liquid
C) Solid
D) Solid and liquid

Neves   135   3 Replies

Erica Zuniga

In order for a radionuclide to be used for medical diagnosis it must have certain properties. Name ...

In order for a radionuclide to be used for medical diagnosis it must have certain properties. Name ...

In order for a radionuclide to be used for medical diagnosis it must have certain properties. Name two and explain why.

Neves   137   3 Replies

abbieloser

Calculate the percentage by mass of the active ingredient in an antacid tablet that weighs 1.36 g if ...

Calculate the percentage by mass of the active ingredient in an antacid tablet that weighs 1.36 g if ...

Calculate the percentage by mass of the active ingredient in an antacid tablet that weighs 1.36 g if it contains 520 mg of calcium carbonate.

Neves   176   3 Replies

abbieloser

0.117 mol of a particular substance weighs 21.9 g. What is the molar mass of this substance?

0.117 mol of a particular substance weighs 21.9 g. What is the molar mass of this substance?

0.117 mol of a particular substance weighs 21.9 g. What is the molar mass of this substance?
 a. 187 g c. 0.00534 g
  b. 187 amu d. 0.00534 amu

Jnortontruvisio   109   2 Replies

matt27

Water is most likely to dissolve a solute that is:

Water is most likely to dissolve a solute that is:

Water is most likely to dissolve a solute that is:
A) hydrophilic.
B) a lipid.
C) hydrophobic.
D) nonpolar.

Cali Fornia   887   4 Replies

ravenp

Assuming the oligopeptide ALPHAHELICKS forms one continuous -helix, the carbonyl oxygen of the ...

Assuming the oligopeptide ALPHAHELICKS forms one continuous -helix, the carbonyl oxygen of the ...

Assuming the oligopeptide ALPHAHELICKS forms one continuous -helix, the carbonyl oxygen of the glutamic acid residue is hydrogen bonded to the amide nitrogen of
 a. leucine.
  b. isoleucine.
  c. cysteine.
  d. lysine.
  e.

sarah_verduzco1   67   2 Replies

Miguel Dimanlig

What property of water helps keep body temperature stabilized?

What property of water helps keep body temperature stabilized?

What property of water helps keep body temperature stabilized?
A) polarity
B) universal solvent
C) surface tension
D) heat capacity

Cali Fornia   343   3 Replies

maria18

Which of the following is a powerful animal model used for drug development?

Which of the following is a powerful animal model used for drug development?

Which of the following is a powerful animal model used for drug development?
A)   fruit fly models with specific genes “knocked out”
B)   bovine models with specific genes “knocked out”
C)   E. coli models with specific plasmids added
D

tulao68   191   2 Replies

5 / 5

tulao68

What was learned using the optical trap laser studies?

What was learned using the optical trap laser studies?

What was learned using the optical trap laser studies?

tulao68   136   2 Replies

5 / 5

tulao68

What is the banding pattern observed in muscle cells?

What is the banding pattern observed in muscle cells?

What is the banding pattern observed in muscle cells?

tulao68   141   2 Replies

tulao68

he structure in bacteria that rotates is referred to as:

he structure in bacteria that rotates is referred to as:

The structure in bacteria that rotates is referred to as
A)   the MS ring.    D)   all of the above.
B)   flagellin.    E)   none of the above.
C)   CheY.

tulao68   130   2 Replies

tulao68

Bacterial motors differe from eukaryotic ones in that the bacterial motor:

Bacterial motors differe from eukaryotic ones in that the bacterial motor:

Bacterial motors differe from eukaryotic ones in that the bacterial motor
A)   moves along a polymeric track.
B)   moves when ATP is hydrolyzed.
C)   spins around a central axis.
D)   a and b.
E)   a, b, and c.

tulao68   137   2 Replies

tulao68

How does the length of the lever arm affect the rate?

How does the length of the lever arm affect the rate?

How does the length of the lever arm affect the rate?
A)   A mutated shorter arm has a reduced rate.
B)   A mutated longer arm has a reduced rate.
C)   A mutated longer arm has a faster rate.
D)   a and b.
E)   a and c.

tulao68   128   2 Replies

tulao68

Binding of ATP causes ______________ in kinesin affinity for microtubules.

Binding of ATP causes ______________ in kinesin affinity for microtubules.

Binding of ATP causes ______________ in kinesin affinity for microtubules.
A)   a decrease    D)   all of the above
B)   an increase    E)   none of the above
C)   no change

tulao68   121   2 Replies

tulao68

The structure of dynein lends itself to the formation of:

The structure of dynein lends itself to the formation of:

The structure of dynein lends itself to the formation of
A)   monomeric proteins.    D)   all of the above.
B)   dimers.    E)   none of the above.
C)   oligomers.

tulao68   134   2 Replies

tulao68

Energy used to propel molecular motors includes:

Energy used to propel molecular motors includes:

Energy used to propel molecular motors includes
A)   ATP.    D)   a and b.
B)   ion gradients.    E)   a, b, and c.
C)   radioactive transfer.

tulao68   131   2 Replies

tulao68

Bacterial flagella are polymers composed of 53-kd subunits of a protein called _______________.

Bacterial flagella are polymers composed of 53-kd subunits of a protein called _______________.

Bacterial flagella are polymers composed of 53-kd subunits of a protein called _______________.

tulao68   122   2 Replies

tulao68

Microtubules are tracks for kinesins and _________________.

Microtubules are tracks for kinesins and _________________.

Microtubules are tracks for kinesins and _________________.

tulao68   124   2 Replies

tulao68

Troponin reacts in response to the ion _______________.

Troponin reacts in response to the ion _______________.

Troponin reacts in response to the ion _______________.

tulao68   125   2 Replies

tulao68

Why is it difficult to develop a vaccine for AIDS?

Why is it difficult to develop a vaccine for AIDS?

Why is it difficult to develop a vaccine for AIDS?

tulao68   124   2 Replies

tulao68

How does the response differ when a peptide that binds to a class II MHC is compared to one that ...

How does the response differ when a peptide that binds to a class II MHC is compared to one that ...

How does the response differ when a peptide that binds to a class II MHC is compared to one that binds to a class I MHC?

tulao68   112   2 Replies

tulao68

When the heavy chain is switched to make secreted antibodies, how is the specificity of antigen ...

When the heavy chain is switched to make secreted antibodies, how is the specificity of antigen ...

When the heavy chain is switched to make secreted antibodies, how is the specificity of antigen binding maintained?

tulao68   123   2 Replies

tulao68

Examples of autoimmune diseases include:

Examples of autoimmune diseases include:

Examples of autoimmune diseases include
A)   multiple sclerosis.    D)   a and b.
B)   insulin-dependent diabetes mellitus.    E)   a, b, and c.
C)   rheumatoid arthritis.

tulao68   129   2 Replies

tulao68

The host cell for HIV is:

The host cell for HIV is:

The host cell for HIV is
A)   immature leukocyte.    D)   red blood cell.
B)   killer T cell.    E)   none of the above.
C)   helper T cell.

tulao68   128   2 Replies

tulao68

The differentiation of a cell to make a different type of immunogolulin is called:

The differentiation of a cell to make a different type of immunogolulin is called:

The differentiation of a cell to make a different type of immunogolulin is called
A)   bait and switch.    D)   recombination.
B)   rearrangement.    E)   none of the above.
C)   class switching.

tulao68   116   2 Replies

tulao68

Immunoglobulin folds are a structural motif, and the amino acid sequence for this fold is commonly ...

Immunoglobulin folds are a structural motif, and the amino acid sequence for this fold is commonly ...

Immunoglobulin folds are a structural motif, and the amino acid sequence for this fold is commonly found in
   A) multicelled animals.     B) yeast.     C) plants.     D) a and c.     E) a, b, and c.

tulao68   122   2 Replies

tulao68