Cell Biology

The type of mutation that involves the insertion or a deletion of a single base

The type of mutation that involves the insertion or a deletion of a single base

The type of mutation that involves the insertion or a deletion of a single base in the coding region of proteins is called
a. a missense mutation.
b. a nonsense mutation.
c. a point mutation.
d. an aberration.
e. None of the

arealhero   257   3 Replies

milestone23

If 20 percent of the bases in a sample of double stranded DNA is adenine, what p

If 20 percent of the bases in a sample of double stranded DNA is adenine, what p

If 20 percent of the bases in a sample of double stranded DNA is adenine, what percentage of the bases would be uracil?
a. 20
b. 10
c. 30
d. 0
e. 15

arealhero   257   3 Replies

milestone23

Describe two ways that the genetic diversity of organisms is increased during me

Describe two ways that the genetic diversity of organisms is increased during me

Describe two ways that the genetic diversity of organisms is increased during meiosis.

arealhero   257   3 Replies

milestone23

Which of the following statements about mitosis is true?

Which of the following statements about mitosis is true?

Which of the following statements about mitosis is true?
a. The chromosome number in the resulting cells is halved.
b. DNA replication is completed in prophase.
c. Crossing over occurs during prophase.
d. Two genetically identical

arealhero   257   3 Replies

milestone23

hemicellulose

hemicellulose

 Which factor causes to form order and disipline of sugar in hemicellulose?

sina Kh   257   1 Reply

padre

Damaging Nucleic Acid?

Damaging Nucleic Acid?

Ever come across a drug, chemical, natural product etc which is antimicrobial due to damage in the nucleic acid? There are loads of antibiotics that inhibit DNA replication by inhibiting the proteins involved in replication but are there any that �

micro   257   1 Reply

savio

Which of the following is NOT an effect of C3a and C5a binding their receptors o

Which of the following is NOT an effect of C3a and C5a binding their receptors o

Which of the following is NOT an effect of C3a and C5a binding their receptors on leukocytes?

A.   Increased vascular permeability via induction of TNF-a and IL-6 secretion
B.   Induction of degranulation by granulocytes
C.   Increased

barry   257   2 Replies

barry

How does the cholorplast interact with other organelles in the cell?

How does the cholorplast interact with other organelles in the cell?

How does the cholorplast interact with other ogranelles in the cell?

I know that it produces sugar through photosynthesis, but how does it interact with another organelle in the cell structure?

Thanks!
Really? Wow.. I guess I'm gonna have to tell t

smox89   257   2 Replies

txgreenant

Cause of abnormal values in blood counts?

Cause of abnormal values in blood counts?

Hi,
I have low MPv and low lymphocytes?  What could be the cause?  This was found in a routine physical.

firebolt   257   1 Reply

leonk4

Sedimentation of sludge occurs in

Sedimentation of sludge occurs in

Sedimentation of sludge occurs in
A) tertiary sewage treatment.
B) water treatment.
C) anaerobic sludge digestion.
D) primary sewage treatment.
E) secondary sewage treatment.

suo90821   258   3 Replies

Vaddim

Campylobacter gastroenteritis is the leading cause of foodborne illness in the United States.

Campylobacter gastroenteritis is the leading cause of foodborne illness in the United States.

Campylobacter gastroenteritis is the leading cause of foodborne illness in the United States.
A) True
B) False

suo90821   258   3 Replies

Luichen

Which of the following is NOT an advantage of live attenuated vaccine agents?

Which of the following is NOT an advantage of live attenuated vaccine agents?

Which of the following is NOT an advantage of live attenuated vaccine agents?
A) They occasionally revert to virulent forms.
B) They elicit lifelong immunity.
C) They stimulate by cell-mediated and humoral immune responses.
D) The

suo90821   258   3 Replies

skcusii

The release of the oocyte by ________ typically occurs every 28 days.

The release of the oocyte by ________ typically occurs every 28 days.

The release of the oocyte by ________ typically occurs every 28 days.
A) transcytosis
B) parturition
C) endocytosis
D) ovulation
E) sublimation

...hello   258   1 Reply

venusky

Clarify the relation between these two terms, Globular proteins and Erythrocytse

Clarify the relation between these two terms, Globular proteins and Erythrocytse

The term globular means spherical, so I was wondering if all erythrocytes, platelets, and leukocytes were just different types of globular proteins in the blood. This would mean that the composition of the blood would be nothing but globular proteins

d9esco   258   3 Replies

bio_man

Naturally occurring fatty acids are typically

Naturally occurring fatty acids are typically

Naturally occurring fatty acids are typically
A) saturated.
B) unsaturated.
C) in the trans configuration.
D) in the cis configuration.
E) comprised of an odd number of carbon atoms.

Astatine   258   3 Replies

Lilligant

Another name for an oxidizing agent is a(n)

Another name for an oxidizing agent is a(n)

Another name for an oxidizing agent is a(n)
A) electron acceptor.
B) electron donor.
C) reductant.
D) electropositive metal.
E) hydride transfer reagent.

Astatine   258   3 Replies

virion

________ links the thick filaments to the Z line.

________ links the thick filaments to the Z line.

________ links the thick filaments to the Z line. 
A) Troponin 
B) Tropomyosin 
C) Titin 
D) Nebulin 
E) Myosin

Astatine   258   2 Replies

Astatine

G protein-adenyl cyclase activity has been shown, in some cases, to be associated with certain disea

G protein-adenyl cyclase activity has been shown, in some cases, to be associated with certain disea

G protein-adenyl cyclase activity has been shown, in some cases, to be associated with certain diseases. In the case of cholera, which of the following is not correct? 
A) Vibrio cholera bacteria colonize the gut. 
B) Cholera to

Astatine   258   3 Replies

Lilligant

Which of the following molecules is not a carrier of electrons in the electron transport system (ETS

Which of the following molecules is not a carrier of electrons in the electron transport system (ETS

Which of the following molecules is not a carrier of electrons in the electron transport system (ETS)? 
A) flavoproteins 
B) copper-nickel compounds 
C) cytochromes 
D) iron-sulfur proteins 
E) c

Astatine   258   3 Replies

virion

The fetus absorbs nutrients and oxygen from the mother's bloodstream through the __________.

The fetus absorbs nutrients and oxygen from the mother's bloodstream through the __________.

The fetus absorbs nutrients and oxygen from the mother's bloodstream through the __________.

cuchillo   258   3 Replies

archie90

Which of the following can mimic gonorrhea infections?

Which of the following can mimic gonorrhea infections?

Which of the following can mimic gonorrhea infections?
A) syphilis
B) chancroid
C) trichomoniasis
D) chlamydia
E) candidiasis

cuchillo   258   3 Replies

archie90

Limiting exposure to rodents and their waste materials is an important means of controlling

Limiting exposure to rodents and their waste materials is an important means of controlling

Limiting exposure to rodents and their waste materials is an important means of controlling
A) coccidioidomycosis.
B) Hantavirus pulmonary syndrome.
C) histoplasmosis.
D) bronchiolitis.
E) inhalational anthrax.

cuchillo   258   3 Replies

archie90

Pneumococcal pneumonia can be prevented using a(n) __________ vaccine.

Pneumococcal pneumonia can be prevented using a(n) __________ vaccine.

Pneumococcal pneumonia can be prevented using a(n) __________ vaccine.
A) subunit
B) inactivated whole
C) attenuated
D) toxoid
E) recombinant

cuchillo   258   3 Replies

archie90

The polymerase chain reaction requires a. one specific DNA oligonucleotide as a

The polymerase chain reaction requires a. one specific DNA oligonucleotide as a

The polymerase chain reaction requires
a. one specific DNA oligonucleotide as a primer.
b. single stranded DNA as template.
c. a heat resistant RNA polymerase.
d. cyclical denaturation and annealing of double stranded DNA.
e.

arealhero   258   3 Replies

milestone23

For each molecule of glucose, how many ATPs are synthesized in fermentation?

For each molecule of glucose, how many ATPs are synthesized in fermentation?

For each molecule of glucose, how many ATPs are synthesized in fermentation?
a. 0
b. 1
c. 2
d. 3
e. 4

arealhero   258   3 Replies

milestone23

Which of the following cell types are implicated in type I hypersensitivity reac

Which of the following cell types are implicated in type I hypersensitivity reac

Which of the following cell types are implicated in type I hypersensitivity reactions?

A.   Neutrophils
B.   Mast cells/basophils
C.   T cells
D.   Monocytes
E.   None of the above

barry   258   3 Replies

barry

The Arthus reaction is considered to be which of the following hypersensitivity

The Arthus reaction is considered to be which of the following hypersensitivity

The Arthus reaction is considered to be which of the following hypersensitivity types?

A.   Type I hypersensitivity
B.   Type II hypersensitivity
C.   Type III hypersensitivity
D.   Type IV hypersensitivity
E.   All of the above

barry   258   2 Replies

barry

At which point in the variable segments does the RAG-1/2 complex introduce a sin

At which point in the variable segments does the RAG-1/2 complex introduce a sin

At which point in the variable segments does the RAG-1/2 complex introduce a single-strand break into the DNA during somatic rearrangement?

A.   Between the coding region and the conserved heptamer
B.   Between the conserved heptamer and

barry   258   2 Replies

barry

From which of the following stem cells are RBCs derived? A.CLP B.CMP C.CEP

From which of the following stem cells are RBCs derived? A.CLP B.CMP C.CEP

From which of the following stem cells are RBCs derived?

A.   CLP
B.   CMP
C.   CEP
D.   Both A and B
E.   None of the above

barry   258   2 Replies

barry

The most common type of blood in the U.S. population is:

The most common type of blood in the U.S. population is:

The most common type of blood in the U.S. population is:
A) A
B) B
C) AB
D) O
E) AO

barry   258   2 Replies

barry

Pacemaker cell and spread of action potential?

Pacemaker cell and spread of action potential?

"The delay of the action potential allows the atria to finish contracting before the ventricle."
But then how does the ventricle manage to contract and pump blood- shouldn't the ventricle contract first and then the atria?
But don't the valves build

nurisar   258   1 Reply

FezOne2

How many mL per should be set on pump? Please show how you got this?

How many mL per should be set on pump? Please show how you got this?

Heparin Sodium 1100units per hour is ordered for a man with clot in her let. Supplied at 50,000units in 500mL of dextrose and water. How many mL per hour should be set on the infusion pump. Round to nearest whole number.

Illuminatus   258   1 Reply

firas kilani

In what TWO ways do substances move through the plasma membrane? What type of energy is used with each?

In what TWO ways do substances move through the plasma membrane? What type of energy is used with each?

Please, describe the two ways the substances move through the plasma membrane.
And sorry if the question is a bit vague. Thanks!

torrey0012   258   1 Reply

nursing2

Describe the roles of HAT's (Histone Acetyl Transfer ases)?

Describe the roles of HAT's (Histone Acetyl Transfer ases)?

Describe the roles of HAT's (Histone Acetyl Transferases) in remodeling DNA and how they control gene expression?

rknicker   258   1 Reply

tommytomz

Name the outer most boundary of cell?

Name the outer most boundary of cell?

Name the outer most boundary of cell?

Alexsmith   259   1 Reply

Shihaam

Of the following codons, which encodes a normal translational stop?

Of the following codons, which encodes a normal translational stop?

Of the following codons, which encodes a normal translational stop? 
A) UUU 
B) AUG 
C) UAG 
D) AAA 
E) AGG

Astatine   259   3 Replies

virion

During bacterial conjugation, interrupted matings yielded the following information: leu 10 minutes,

During bacterial conjugation, interrupted matings yielded the following information: leu 10 minutes,

During bacterial conjugation, interrupted matings yielded the following information: leu 10 minutes, arg 8 minutes, str 15 minutes, and amp 12 minutes. Based on this information, the order of the genes, beginning at the origin, is 
A) amp-

Astatine   259   3 Replies

virion

You are investigating a clinical disorder in one of your patients. You discover that the patient has

You are investigating a clinical disorder in one of your patients. You discover that the patient has

You are investigating a clinical disorder in one of your patients. You discover that the patient has an autoimmune disease that targets and destroys fibroblasts. This disorder would most likely affect 
A) fiber production by the cells, as

Astatine   259   3 Replies

Lilligant

The normal hosts for Ebola viruses are probably

The normal hosts for Ebola viruses are probably

The normal hosts for Ebola viruses are probably
A) birds.
B) cats.
C) rodents.
D) bats.
E) humans.

cuchillo   259   3 Replies

archie90

Which of the following tests is most effective in determining whether someone has been infected with

Which of the following tests is most effective in determining whether someone has been infected with

Which of the following tests is most effective in determining whether someone has been infected with the H1N1 influenza virus?
A) a viral neutralization test
B) an immunodiffusion test
C) a viral hemagglutination test
D) an antibo

cuchillo   259   2 Replies

cuchillo