Cell Biology

How would i calculate this IV problem?

How would i calculate this IV problem?

ordered: heparin 1200 units/hr w/ a concentration of Heparin 25,000 units in 250 ml D5W. how many ml/hr should the infusion pump be set at?

Datkidjoven   261   2 Replies

illsy

How does CD8 T cells get activated? IF APC presents antigen via MHC II, that would only activate CD4?

How does CD8 T cells get activated? IF APC presents antigen via MHC II, that would only activate CD4?

so for humoral response, APC present antigen via MHC II and this activate CD4, which then activate B cells to make antibodies.  But say in viral infection, how does CD8 T cells get activated? CD8 needs antigen presented via MHC I not MHC II.  Does AP

nursing4484   261   1 Reply

nursing2

Are there consumer senolytics that are FDA approved?

Are there consumer senolytics that are FDA approved?

Are there consumer senolytics that are FDA approved? I am worried age research is moving too slow.

CarbonRobot   262   5 Replies

bio_man

Where do Salmonella pathogens grow and replicate in the infected host?

Where do Salmonella pathogens grow and replicate in the infected host?

Where do Salmonella pathogens grow and replicate in the infected host? 

ryann   262   1 Reply

bolbol

Infants born to crack-using mothers exhibit all of the following symptoms EXCEPT:

Infants born to crack-using mothers exhibit all of the following symptoms EXCEPT:

Infants born to crack-using mothers exhibit all of the following symptoms EXCEPT:
 A) tremors.
  B) low birth weight.
  C) lethargy.
  D) frantic sucking activities.

jldobro   262   1 Reply

kmoralesss

Which organelle modifies, sorts, and packages proteins and lipids for export from the cell?

Which organelle modifies, sorts, and packages proteins and lipids for export from the cell?

Which organelle modifies, sorts, and packages proteins and lipids for export from the cell?
A) Golgi apparatus
B) cytoskeleton
C) endoplasmic reticulum
D) mitochondrion

Cali Fornia   262   2 Replies

Cali Fornia

The crab industry needs female crabs for growing more crabs. What bacterium might be used to ensure ...

The crab industry needs female crabs for growing more crabs. What bacterium might be used to ensure ...

The crab industry needs female crabs for growing more crabs. What bacterium might be used to ensure development of female crabs and shrimp?
A) Gemmata
B) Neisseria
C) Wolbachia
D) Acinetobacter
E) Pelagibacter

suo90821   262   3 Replies

tramjosey

HLA restricted T lymphocytes

HLA restricted T lymphocytes

What is meant when "T-lymphocytes are HLA restricted" in terms of recognizing antigens?

ehd123   262   4 Replies

ehd123

Each of the markers below is paired correctly with the B cell development stage during which it is e

Each of the markers below is paired correctly with the B cell development stage during which it is e

Each of the markers below is paired correctly with the B cell development stage during which it is expressed except
A) pro-B cell/CD 45R.
B) lymphoid stem cell/c-kit receptor.
C) mature B cell/mu heavy chain.
D) pre-B cell/IL-7 re

tapey1996   262   3 Replies

de5iet

Hopanoids (Multiple Choice Question)

Hopanoids (Multiple Choice Question)

Hopanoids
A) are found in eukaryotes only.
B) are related to cholesterol.
C) are a type of glycolipid.
D) are a type of phospholipid.
E) all of the above

Astatine   262   3 Replies

virion

You wish to use mRNA profiles to examine the genes of a cell that are ultimately translated into pro

You wish to use mRNA profiles to examine the genes of a cell that are ultimately translated into pro

You wish to use mRNA profiles to examine the genes of a cell that are ultimately translated into proteins during times of stress. As a result, you are investigating a portion of the cell's
A) spliceosome.
B) genome.
C) proteome.

Astatine   262   2 Replies

Astatine

Which of the following is the infective form of Trypanosoma cruzi?

Which of the following is the infective form of Trypanosoma cruzi?

Which of the following is the infective form of Trypanosoma cruzi?
A) epimastigotes
B) trypomastigotes
C) pseudocysts
D) amastigotes
E) miricidia

cuchillo   262   3 Replies

archie90

Which of the following causes of viral meningitis is transmitted by the fecal-oral route?

Which of the following causes of viral meningitis is transmitted by the fecal-oral route?

Which of the following causes of viral meningitis is transmitted by the fecal-oral route?
A) equine encephalitis virus
B) California encephalitis virus
C) West Nile virus
D) echovirus
E) rabies

cuchillo   262   3 Replies

archie90

How does tetanospasmin act? (Multiple Choice)

How does tetanospasmin act? (Multiple Choice)

How does tetanospasmin act?
A) It blocks the secretion of acetylcholine into the synaptic cleft.
B) It blocks the release of inhibitory neurotransmitters in the CNS.
C) It triggers the endocytosis of skeletal muscle cells.
D) It i

cuchillo   262   3 Replies

archie90

Which of the following characteristics does NOT distinguish the archaea from the bacteria?

Which of the following characteristics does NOT distinguish the archaea from the bacteria?

Which of the following characteristics does NOT distinguish the archaea from the bacteria?
A) the types of transfer RNA used
B) the rRNA sequences present
C) the deoxyribonucleotides
D) cell wall composition
E) cell membrane

cuchillo   262   3 Replies

archie90

Which of the following would NOT normally be found as a component of a cell's nucleic acids?

Which of the following would NOT normally be found as a component of a cell's nucleic acids?

Which of the following would NOT normally be found as a component of a cell's nucleic acids?
A) adenine deoxyribonucleotides
B) thymine deoxyribonucleotides
C) uracil deoxyribonucleotides
D) cytosine ribonucleotides
E) a

cuchillo   262   3 Replies

archie90

Any Veterinarians out there!?! What is the difference between these to Medicines?

Any Veterinarians out there!?! What is the difference between these to Medicines?

What is "Atropine Sulfate 1/20 Injectable solution" and what does it do. when do you give it to the animal

What is "Heparin Sodium Injection, USP" and what does it do and when do you give it to the animal

datexy   262   1 Reply

fire4830

What type of bacteria has the least smell?

What type of bacteria has the least smell?

I want to grow some bacteria in an incubator in an agar medium. I need to choose one type of gram postive and one type of gram negative bacteria. Which ones would have the least odor?

nursing2   262   1 Reply

riyaghuman

what is the significance, future and drawbacks of stem cell reaseach??

what is the significance, future and drawbacks of stem cell reaseach??

if you dont know about stemcells then what about cytokines,gene therapy or proteomics? what are their significance, future and drawbacks?? PLZ HELP MEEE!!

iloveapbio   262   1 Reply

Nursing01

Rhodobacter cells perform photosynthesis in the presence of light and grow heterotrophically in the ...

Rhodobacter cells perform photosynthesis in the presence of light and grow heterotrophically in the ...

Rhodobacter cells perform photosynthesis in the presence of light and grow heterotrophically in the dark. After being cultured in total darkness for multiple generations, phenotypic and genotypic changes occur. What phenotypic changes occur and what

felipebelt   263   4 Replies

Amanda387

The triplet codes in DNA needed to specify a specific polypeptide chain are found in the:

The triplet codes in DNA needed to specify a specific polypeptide chain are found in the:

The triplet codes in DNA needed to specify a specific polypeptide chain are found in the:
A) cytoplasm.
B) gene.
C) codon of mRNA.
D) anticodon of tRNA.

Cali Fornia   263   2 Replies

Cali Fornia

Which of the following can be transmitted from an infected mother to her fetus across the ...

Which of the following can be transmitted from an infected mother to her fetus across the ...

Which of the following can be transmitted from an infected mother to her fetus across the placenta?
A) cytomegalovirus
B) anthrax
C) Borrelia
D) Yersinia
E) Spirillum

suo90821   263   3 Replies

Luichen

All of the following are true of chronic fatigue syndrome EXCEPT

All of the following are true of chronic fatigue syndrome EXCEPT

All of the following are true of chronic fatigue syndrome EXCEPT
A) it is a psychological disorder.
B) it may be triggered by a viral infection.
C) it is also known as myalgic encephalomyelitis.
D) it often begins with flu-like

suo90821   263   3 Replies

segelloc

The reaction catalyzed by reverse transcriptase is

The reaction catalyzed by reverse transcriptase is

The reaction catalyzed by reverse transcriptase is
A) mRNA → cDNA.
B) tRNA → mRNA.
C) DNA → mRNA.
D) mRNA → protein.
E) DNA → DNA.

suo90821   263   3 Replies

segelloc

BRCA1 and BRCA2 genes are recessive genes transmitted on the sex chromosomes. This why women carryin

BRCA1 and BRCA2 genes are recessive genes transmitted on the sex chromosomes. This why women carryin

BRCA1 and BRCA2 genes are recessive genes transmitted on the sex chromosomes. This why women carrying mutations in these genes are more prone to breast cancer.
Is this true or false?
A) True
B) False

tapey1996   263   3 Replies

de5iet

The situation in which an active regulatory protein "turns off" gene expression is an example of A

The situation in which an active regulatory protein "turns off" gene expression is an example of A

The situation in which an active regulatory protein "turns off" gene expression is an example of   
A) a mutation.   
B) positive control. 
C) negative control. 
D) constitutive gene elements. 

Astatine   263   3 Replies

virion

The perforin-granzyme pathway involves (Multiple Choice Question)

The perforin-granzyme pathway involves (Multiple Choice Question)

The perforin-granzyme pathway involves
A) the production of fever, which kills the pathogen.
B) the production of antibodies toward the invading pathogen.
C) the synthesis of special cell-killing proteins that act on infected or abnorm

cuchillo   263   3 Replies

archie90

The binding of snRNPs to consensus sequences is necessary for a. gene duplicatio

The binding of snRNPs to consensus sequences is necessary for a. gene duplicatio

The binding of snRNPs to consensus sequences is necessary for
a. gene duplication.
b. the addition of a poly A tail.
c. capping an hnRNA.
d. RNA splicing.
e. transcription.

arealhero   263   3 Replies

milestone23

Meselson and Stahl were trying to determine if DNA replication was semiconservat

Meselson and Stahl were trying to determine if DNA replication was semiconservat

Meselson and Stahl were trying to determine if DNA replication was semiconservative, conservative, or dispersive by labeling E. coli DNA with a regimen of heavy nitrogen (H) for one round of replication and then transferring these cells to light nitr

arealhero   263   3 Replies

milestone23

Contrast ionotropic and metabotropic receptors.

Contrast ionotropic and metabotropic receptors.

Contrast ionotropic and metabotropic receptors.

nite_n_day   263   3 Replies

padre

The use of tumor-specific T cells re-introduced to patients requires all of the

The use of tumor-specific T cells re-introduced to patients requires all of the

The use of tumor-specific T cells re-introduced to patients requires all of the following EXCEPT:

a)   tumor-specific cells being isolated.
b)   tumor-specific cells being activated in order to overcome tumor-induced anergy.
c)   the p

barry   263   2 Replies

barry

If you breathed in heaps of oxygen would you get like really healthy?

If you breathed in heaps of oxygen would you get like really healthy?

If you had an oxygen tank or went and lived on a high altitude mountain or some other method.
Would you become really healthy cause you were flooding your body with oxygen?
Thats what meditation type people believe,that if you just sit there and medi

NursingChick   263   3 Replies

jules_1978

What are the translations for the folloeing mRNA?

What are the translations for the folloeing mRNA?

I need the translations for the following mRNA.
TAC, CAG, GTA, AAC, TGT, GGG, CTC, TTT, AGT, CGC, and CAT.
I have the translation for CTT it's GAA, but I don't know what exactly to do, to translate the rest.

ton   263   1 Reply

julie7

Thiobacillus ferrooxidans is used for the recovery of _________ from ore.

Thiobacillus ferrooxidans is used for the recovery of _________ from ore.

Thiobacillus ferrooxidans is used for the recovery of _________ from ore.
A) sulfur
B) iron
C) sulfuric acid
D) gold
E) copper

suo90821   264   4 Replies

Vaddim

This refers to the atomic weight of all naturally occurring isotopes of an element.

This refers to the atomic weight of all naturally occurring isotopes of an element.

This refers to the atomic weight of all naturally occurring isotopes of an element.
A)   Mass number
B)   Atomic number
C)   Atomic mass
D)   Ionic mass
E)   Covalent mass

dolby   264   2 Replies

dolby

With regard to the semipermeable nature of the plasma membrane, which of the following would readily

With regard to the semipermeable nature of the plasma membrane, which of the following would readily

With regard to the semipermeable nature of the plasma membrane, which of the following would readily cross without the aid of a transport protein?
A) calcium ions
B) glucose
C) water
D) amino acids
E) DNA

Astatine   264   3 Replies

virion

The phase of the cell cycle that varies most in duration in various cell types is

The phase of the cell cycle that varies most in duration in various cell types is

The phase of the cell cycle that varies most in duration in various cell types is 
A) M. 
B) G1.
C) S. 
D) G2.
E) both choices A and B

Astatine   264   3 Replies

virion

Focal contact is associated with which of the following type of cellular junction?

Focal contact is associated with which of the following type of cellular junction?

Focal contact is associated with which of the following type of cellular junction? 
A) adhesive junction 
B) gap junction 
C) plasmodesmata 
D) tight junctions 
E) all of the above

Astatine   264   2 Replies

Astatine

Which of the following bacteria is commonly used to produce vinegar?

Which of the following bacteria is commonly used to produce vinegar?

Which of the following bacteria is commonly used to produce vinegar?
A) Aspergillus oryzae
B) Acetobacter
C) Lactobacillus
D) Lactoccocus cremoris
E) Streptococcus thermophilus

cuchillo   264   4 Replies

Lilligant

What is the underlying problem in most acquired immunodeficiencies?

What is the underlying problem in most acquired immunodeficiencies?

What is the underlying problem in most acquired immunodeficiencies?
A) declining cell-mediated immunity
B) declining humoral immunity
C) production of autoantibodies
D) eosinophilia
E) anemia

cuchillo   264   3 Replies

archie90