Biochemistry

In the centrifugal separation of an eukaryotic cell, you might expect to detect ribosomes with what ...

In the centrifugal separation of an eukaryotic cell, you might expect to detect ribosomes with what ...

In the centrifugal separation of an eukaryotic cell, you might expect to detect ribosomes with what sedimentation coefficient?
 a. 80S
  b. 60S
  c. 80S and 70S
  d. 80S and 60S

lacoya15   19   1 Reply

Jiminie

Gap junctions allow which of the following processes to occur?

Gap junctions allow which of the following processes to occur?

Gap junctions allow which of the following processes to occur?
 a. transport of minerals and nutrients between adjacent cells
  b. protection against cell death if an adjacent neighbor cell dies
  c. movement of cells between adjacent

lacoya15   19   2 Replies

lacoya15

Of the following, which is the most direct way to shut down the transport of Na+ and K+ across ...

Of the following, which is the most direct way to shut down the transport of Na+ and K+ across ...

Of the following, which is the most direct way to shut down the transport of Na+ and K+ across animal cell membranes?
 a. administering large amounts of an ATP non-hydrolysable analog to stop ATP binding
  b. feeding the cells large amount

ugai_kyut   19   1 Reply

jianhong9991

Examine the structures represented by the following models. Atoms other than carbon and hydrogen are ...

Examine the structures represented by the following models. Atoms other than carbon and hydrogen are ...

Examine the structures represented by the following models. Atoms other than carbon and hydrogen are indicated by the element symbol.
   
   
 

kescobar5   19   1 Reply

Beehappy2

Examine the following structure. What is the number assigned to the penultimate carbon in this ...

Examine the following structure. What is the number assigned to the penultimate carbon in this ...

Examine the following structure.
 

crownlessking   19   2 Replies

crownlessking

Which of the following is the conjugate acid of water?

Which of the following is the conjugate acid of water?

Which of the following is the conjugate acid of water?
 a. HCl c. NH4+
  b. H3O+ d. OH

Revolver38   19   1 Reply

rayohn2010

Which of the following elements might be the fuel in a fusion reaction?

Which of the following elements might be the fuel in a fusion reaction?

Which of the following elements might be the fuel in a fusion reaction?
 a. helium c. iron
  b. hydrogen d. uranium

sarah_verduzco1   19   1 Reply

ericpie13

Which of the following pieces of data can we obtain from a heating curve?

Which of the following pieces of data can we obtain from a heating curve?

Which of the following pieces of data can we obtain from a heating curve?
 a. boiling point of a liquid c. specific heat of a solid
  b. melting point of a solid d. all of the above

ksultz   19   1 Reply

ally

Which of the following will occur if the temperature of a gas is increased from 20 K to 40 K at ...

Which of the following will occur if the temperature of a gas is increased from 20 K to 40 K at ...

Which of the following will occur if the temperature of a gas is increased from 20 K to 40 K at constant pressure?
 a. The volume will double.
  b. The volume will be halved.
  c. The volume will decrease slightly.
  d. The volum

shoppa   19   1 Reply

hellokristi4

Compounds found in which of the following products are removed from closest to the top of the ...

Compounds found in which of the following products are removed from closest to the top of the ...

Compounds found in which of the following products are removed from closest to the top of the fractional distillation tower used in the refining of petroleum?
 a. asphalt c. fuel oil
  b. lubricating oil d. gasoline

alshernandez   19   1 Reply

freddieg23

Which of the following is essentially biologically inactive?

Which of the following is essentially biologically inactive?

Which of the following is essentially biologically inactive?
 a. (R)-ibuprofen c. (R)-naproxen
  b. (S)-ibuprofen d. (S)-naproxen

nclariceb   19   1 Reply

yuhiyuhi

Which of the following will be obtained by the reaction of pentanal with H2 in the presence of a ...

Which of the following will be obtained by the reaction of pentanal with H2 in the presence of a ...

Which of the following will be obtained by the reaction of pentanal with H2 in the presence of a transition metal catalyst?
 a. pentene c. 2-pentanol
  b. 1-pentanol d. pentanoic acid

lacoya15   19   2 Replies

lacoya15

Which of the following is used by dentists to cauterize gums?

Which of the following is used by dentists to cauterize gums?

Which of the following is used by dentists to cauterize gums?
 a. acetic acid c. dichloroacetic acid
  b. chloroacetic acid d. trichloroacetic acid

mdlc0516   19   1 Reply

megabyte7

Which of the following is true of all lecithins?

Which of the following is true of all lecithins?

Which of the following is true of all lecithins?
 a. Their fatty acids are all saturated.
  b. Their fatty acids are all unsaturated.
  c. There is always a phosphate group bound to carbon 1 of glycerol.
  d. There is always an u

Revolver38   19   1 Reply

hentrus

Which of the following is the convention used to specify the sequence of bases in DNA?

Which of the following is the convention used to specify the sequence of bases in DNA?

Which of the following is the convention used to specify the sequence of bases in DNA?
 a. We start at the 3' end.
  b. We start at the 5' end.
  c. We start at the end closest to the first adenine.
  d. we start at the end close

jayfro   19   1 Reply

car2065596

How many different chemical units make up a nucleotide?

How many different chemical units make up a nucleotide?

How many different chemical units make up a nucleotide?
 a. 2 c. 4
  b. 3 d. 5

Revolver38   19   1 Reply

rayohn2010

What is the size of the full prokaryotic ribosomal complex?

What is the size of the full prokaryotic ribosomal complex?

What is the size of the full prokaryotic ribosomal complex?
 a. 30S c. 70S
  b. 50S d. 80S

ugai_kyut   19   1 Reply

jogden1011

Which of the following is true if an amino acid is incorrectly paired with a tRNA?

Which of the following is true if an amino acid is incorrectly paired with a tRNA?

Which of the following is true if an amino acid is incorrectly paired with a tRNA?
 a. This is not important since the complex will be very unstable.
  b. This is not important since the anticodon will not match up with its codon.
  c

hessar3   19   1 Reply

ashleyjohnson81

How many initiation codons are there?

How many initiation codons are there?

How many initiation codons are there?
 a. 1 c. 4
  b. 3 d. 20

Linalovespickle   19   1 Reply

John Ross

Which of the following has a sequence that serves as a template for the RNA being produced?

Which of the following has a sequence that serves as a template for the RNA being produced?

Which of the following has a sequence that serves as a template for the RNA being produced?
 a. the DNA coding strand c. the DNA (+ ) strand
  b. the DNA () strand d. the DNA sense strand

rachelkimq   19   1 Reply

winger785

Where are B cells and T cells found?

Where are B cells and T cells found?

Where are B cells and T cells found?
 a. only in the blood
  b. only in the lymph
  c. primarily in the blood, but some are in the blood
  d. primarily in the lymph, but some are in the blood

hessar3   19   2 Replies

hessar3

The RFLP technique : (Multiple Choice)

The RFLP technique : (Multiple Choice)

The RFLP technique
 A) is of most use with prokaryotic DNA
  B) is of no use on DNA that contains introns
  C) is used on the DNA of organisms that have two sets of chromosomes
  D) provides fewer genetic markers than classica

sarah_verduzco1   19   1 Reply

Beehappy2

Which repair mechanism has an intermediate wherein a region of single-stranded DNA is temporarily ...

Which repair mechanism has an intermediate wherein a region of single-stranded DNA is temporarily ...

Which repair mechanism has an intermediate wherein a region of single-stranded DNA is temporarily created?
 A) Base Excision
  B) Nucleotide Excision
  C) Pol III Proofreading
  D) Mismatch Repair

redheadprincess   19   2 Replies

redheadprincess

Glycolipids are characterized by containing the following non-lipid component:

Glycolipids are characterized by containing the following non-lipid component:

Glycolipids are characterized by containing the following non-lipid component:
 A) Sugars
  B) Glycerol
  C) Phosphate
  D) Sphingosine
  E) More than one of these characterize glycolipids.

lacinb30   19   1 Reply

Godzilla159

The C-4 carbon dioxide carrier is:

The C-4 carbon dioxide carrier is:

The C-4 carbon dioxide carrier is:
 a. oxaloacetate
 b. glyoxylate
 c. apartate
 d. phosphoenolpyruvate

hawkins1346   19   1 Reply

kpennies

Of the following, which is the most direct way to shut down the transport of Na+ and K+ across ...

Of the following, which is the most direct way to shut down the transport of Na+ and K+ across ...

Of the following, which is the most direct way to shut down the transport of Na+ and K+ across animal cell membranes?
 a. administering large amounts of an ATP non-hydrolysable analog to stop ATP binding
 b. feeding the cells large amounts

kescobar5   19   1 Reply

rayohn2010

Which of the following statements concerning -oxidation of fatty acids is false?

Which of the following statements concerning -oxidation of fatty acids is false?

Which of the following statements concerning -oxidation of fatty acids is false?
 a. Initiation occurs at the methyl end of the fatty acid.
  b. -oxidation is the primary route for degradation of fatty acids.
  c. -oxidation takes pla

adamsnaya   19   1 Reply

Jiminie

The F1F0 complex is actually a transmembrane complex.

The F1F0 complex is actually a transmembrane complex.

The F1F0 complex is actually a transmembrane complex.
 a. True
  b. False

kekebab001   19   1 Reply

hollyhateschool

The activating enzymes can actually remove wrong amino acids attached to a tRNA.

The activating enzymes can actually remove wrong amino acids attached to a tRNA.

The activating enzymes can actually remove wrong amino acids attached to a tRNA.
 a. True
  b. False

kescobar5   19   1 Reply

kburke

A single operon (Multiple Choice)

A single operon (Multiple Choice)

A single operon
 a. usually contains all the enzymes which are specific for the synthesis of a special biomolecule.
  b. usually does not contain all the enzymes which are specific for the synthesis of a special biomolecule.
  c. usua

bubblegum123   19   2 Replies

bubblegum123

Which of the following is not a characteristic of hemoglobin?

Which of the following is not a characteristic of hemoglobin?

Which of the following is not a characteristic of hemoglobin?
 a. It contains two different types of subunits .
  b. It contains a prosthetic group.
  c. It is an allosteric enzyme.
  d. It transports oxygen.
  e. All of the

avaaaaa   19   1 Reply

dalveixes

Which of the following best describes a motif?

Which of the following best describes a motif?

Which of the following best describes a motif?
 a. a repetitive supersecondary structure
  b. a common nonrepetitive irregularity found in antiparallel -sheets
  c. a protein conformation with biological activity
  d. a group of

Greenspotsock   19   1 Reply

P.liania

Many of the properties of water can be accounted for by the fact that

Many of the properties of water can be accounted for by the fact that

Many of the properties of water can be accounted for by the fact that
 a. it is polar
  b. it forms hydrogen bonds
  c. it is a bent molecule
  d. all of these are true

redheadprincess   19   1 Reply

abcdef1244

What is the purpose for each of the steps in the thermocycler routine?

What is the purpose for each of the steps in the thermocycler routine?

What is the purpose for each of the steps in the thermocycler routine?
  What will be an ideal response?

hessar3   19   1 Reply

sandyb2

Give one example of a protein that might still be with your LDH.

Give one example of a protein that might still be with your LDH.

Give one example of a protein that might still be with your LDH.
  What will be an ideal response?

lacoya15   19   1 Reply

131231

What are three ways to elute a bound molecule from an affinity column? What are the advantages and ...

What are three ways to elute a bound molecule from an affinity column? What are the advantages and ...

What are three ways to elute a bound molecule from an affinity column? What are the advantages and disadvantages of each?
  What will be an ideal response?

Griffinw42   19   1 Reply

megabyte7

Which of the following statements regarding chaperones and chaperonins is correct?

Which of the following statements regarding chaperones and chaperonins is correct?

Which of the following statements regarding chaperones and chaperonins is correct?
 
  a. GroEL serves as a cap for GroES
  b. GroES is a large, cylindrical protein complex
  c. DnaK works with DnaJ to sequester hydrophobic regio

jennjenn563   19   1 Reply

pripaw

AZT (3'-azido-2',3'-dideoxythymidine) is a drug that gets incorporated into growing viral DNA and ...

AZT (3'-azido-2',3'-dideoxythymidine) is a drug that gets incorporated into growing viral DNA and ...

AZT (3'-azido-2',3'-dideoxythymidine) is a drug that gets incorporated into growing viral DNA and blocks the activity of:
 
  a. DNA ligase.
  b. DNA polymerase  (beta).
  c. DNA polymerase  (alpha).
  d. reverse transcripta

jennjenn563   19   2 Replies

jennjenn563

What is the size of the full prokaryotic ribosomal complex?

What is the size of the full prokaryotic ribosomal complex?

What is the size of the full prokaryotic ribosomal complex?
 A) 30S
  B) 50S
  C) 70S
  D) 80S

Nalu   20   1 Reply

clew0012

A client with a long-standing diagnosis of human immunodeficiency virus (HIV) has recently developed ...

A client with a long-standing diagnosis of human immunodeficiency virus (HIV) has recently developed ...

A client with a long-standing diagnosis of human immunodeficiency virus (HIV) has recently developed neutropenia and been admitted to a hospital. Which of the following measures should be prioritized by the nurses who are providing his care?
 

littlej_dvine   20   1 Reply

tgreen77