Cell Biology

The cytoplasmic membrane of Picrophilus is extremely acid impermeable at very low pH.

The cytoplasmic membrane of Picrophilus is extremely acid impermeable at very low pH.

The cytoplasmic membrane of Picrophilus is extremely acid impermeable at very low pH.
[True or False]

edilsondiaz318   30   2 Replies

edilsondiaz318

The cytoplasmic membrane of Thermoplasma contains a lipopolysaccharide-like material called lipoglycan that

The cytoplasmic membrane of Thermoplasma contains a lipopolysaccharide-like material called lipoglycan that

The cytoplasmic membrane of Thermoplasma contains a lipopolysaccharide-like material called lipoglycan that
A) never contains sugars such as glucose.
B) forms an unusual and flexible cell wall.
C) contributes to membrane stability.
D) may be pres

brake   28   2 Replies

brake

The cytoplasmic membranes of __________ contain lipids.

The cytoplasmic membranes of __________ contain lipids.

The cytoplasmic membranes of __________ contain lipids.
A) Gram-negative bacteria
B) Gram-positive bacteria
C) both Gram-positive and Gram-negative bacteria
D) archaea
E) all prokaryotes

cuchillo   315   3 Replies

archie90

The cytoplasmic membranes of __________ contain phospholipids and proteins.

The cytoplasmic membranes of __________ contain phospholipids and proteins.

The cytoplasmic membranes of __________ contain phospholipids and proteins.
A) archaeal cells
B) bacterial cells
C) eukaryotic cells
D) both bacterial and eukaryotic cells
E) archaeal, bacterial, and eukaryotic cells

cuchillo   323   3 Replies

archie90

The cytoplasmic proteins of Halobacterium are

The cytoplasmic proteins of Halobacterium are

The cytoplasmic proteins of Halobacterium are
A) highly acidic.
B) highly basic.
C) generally neutral.
D) variable, depending on the species.

kortni916   19   2 Replies

kortni916

The cytoskeleton of an animal cell changes markedly between G1 and early M phase (prophase) of the ...

The cytoskeleton of an animal cell changes markedly between G1 and early M phase (prophase) of the ...

The cytoskeleton of an animal cell changes markedly between G1 and early M phase (prophase) of the cell cycle.
 
  For each of the following sentences, choose one of the options enclosed in square brackets that best describes the changes t

gd1325722   49   1 Reply

bethclip

The cytoskeleton provides support, structure, motility, and organization, and it forms tracks to ...

The cytoskeleton provides support, structure, motility, and organization, and it forms tracks to ...

The cytoskeleton provides support, structure, motility, and organization, and it forms tracks to direct organelle and vesicle transport. Which of the cytoskeletal elements listed below is the thickest?
 
  (a) actin filaments
  (b) mi

jazzy23   40   1 Reply

hennihanadi

The cytosol and intracellular fluid (ICF) both refer to the fluid portion of the cytoplasm.

The cytosol and intracellular fluid (ICF) both refer to the fluid portion of the cytoplasm.

The cytosol and intracellular fluid (ICF) both refer to the fluid portion of the cytoplasm.

Cali Fornia   163   2 Replies

Cali Fornia

The cytosol is best described as the

The cytosol is best described as the

The cytosol is best described as the
A) fluid within the nucleus.
B) three-dimensional array of interconnected filaments.
C) semifluid substance in which organelles are suspended.
D) internal contents of organelles.
E) area o

Astatine   690   3 Replies

virion

The cytosol is best described as the :

The cytosol is best described as the :

The cytosol is best described as the
 
  A) fluid within the nucleus.
  B) three-dimensional array of interconnected filaments.
  C) semifluid substance in which organelles are suspended.
  D) internal contents of organelles

alyssaa1017   28   1 Reply

omardr22

The dairy creamer used in restaurants is usually sterilized by

The dairy creamer used in restaurants is usually sterilized by

The dairy creamer used in restaurants is usually sterilized by
A) filtration.
B) ionizing radiation.
C) lyophilization.
D) UHT sterilization.
E) autoclaving.

cuchillo   221   3 Replies

archie90

The damage caused by ultraviolet radiation is

The damage caused by ultraviolet radiation is

The damage caused by ultraviolet radiation is
A) repaired during translation.
B) never repaired.
C) repaired by DNA replication.
D) cut out and replaced.
E) repaired during transcription.

suo90821   132   3 Replies

fanlili

The damaged areas of teeth caused by organic acids produced by dental plaque are called

The damaged areas of teeth caused by organic acids produced by dental plaque are called

The damaged areas of teeth caused by organic acids produced by dental plaque are called
A) degenerative plaque.
B) calcified plaque.
C) periodontal disease.
D) dental caries.

janderson2000   31   2 Replies

janderson2000

The dark staining area of a sarcomere is the

The dark staining area of a sarcomere is the

The dark staining area of a sarcomere is the
A) H band.
B) A band.
C) I band.
D) Z line.
E) M line.

barry   1016   2 Replies

barry

The data below were obtained as the result of the Sanger method of DNA sequencin

The data below were obtained as the result of the Sanger method of DNA sequencin

The data below were obtained as the result of the Sanger method of DNA sequencing. Determine the DNA sequence, making sure to indicate 5' and 3' ends, and add the sequence for the complementary strand.

colleen   1039   1 Reply

ppk

The data reporting that sickle cell disease affects approximately 1 in 600 American blacks is an ...

The data reporting that sickle cell disease affects approximately 1 in 600 American blacks is an ...

The data reporting that sickle cell disease affects approximately 1 in 600 American blacks is an example of which concept?


▸ Incidence

▸ Prevalence

▸ Ratio

▸ Risk

annacole   74   1 Reply

SarahJoseph

The dead cells usually remain in the exposed stratum corneum layer for ________

The dead cells usually remain in the exposed stratum corneum layer for ________

The dead cells usually remain in the exposed stratum corneum layer for ________ before they are shed or washed away.
A) five to eight hours
B) about two weeks
C) four to six weeks
D) at least one year
E) the entire life of th

barry   456   3 Replies

bkline14

The deamination of cytosine generates a uracil base. This is a naturally occurring nucleic acid ...

The deamination of cytosine generates a uracil base. This is a naturally occurring nucleic acid ...

The deamination of cytosine generates a uracil base. This is a naturally occurring nucleic acid base, and so does not represent a DNA lesion caused by damage due to chemicals or irradiation.
 
  Why is this base recognized as foreign and w

y52qiu   41   1 Reply

hollyhateschool

The death phase applies to individual cells rather than populations.

The death phase applies to individual cells rather than populations.

The death phase applies to individual cells rather than populations.
[True or False]

stfajar   24   2 Replies

stfajar

The deciduous forest of eastern North America has experienced dramatic changes o

The deciduous forest of eastern North America has experienced dramatic changes o

The deciduous forest of eastern North America has experienced dramatic changes over the past two to three centuries, transitioning from a nearly continuous forested area to increasingly patchy areas of forest broken up by farming and development. Som

barry   900   1 Reply

bio_man

The decrease in blood glucose activates glucose receptors in the brain, which leads directly to a(n)

The decrease in blood glucose activates glucose receptors in the brain, which leads directly to a(n)

The decrease in blood glucose activates glucose receptors in the brain, which leads directly to a(n)
A) increase in sympathetic activity.
B) decrease in parasympathetic activity.
C) increase in parasympathetic activity.
D) decrea

...hello   111   1 Reply

venusky

The decrease or loss of virulence of a pathogen is referred to as

The decrease or loss of virulence of a pathogen is referred to as

The decrease or loss of virulence of a pathogen is referred to as
A) aging.
B) attenuation.
C) disinfectivity.
D) lethal dose.

sm.r1   39   3 Replies

purplelisianthu

The defecation reflex is initiated by distention of the (sigmoid colon / rectum).

The defecation reflex is initiated by distention of the (sigmoid colon / rectum).

The defecation reflex is initiated by distention of the (sigmoid colon / rectum).

...hello   109   1 Reply

venusky

The definition of (fermentation/cultivation) used by food microbiologists is the desirable change in ...

The definition of (fermentation/cultivation) used by food microbiologists is the desirable change in ...

The definition of (fermentation/cultivation) used by food microbiologists is the desirable change in food due to microbial activity.

Anook   54   1 Reply

berry08

The definition of antigen is

The definition of antigen is

The definition of antigen is
A) the exact portion of a microorganism or chemical that the immune system reacts against.
B) the portion of the white blood cell responsible for recognizing something as "non-self."
C) an infecti

tapey1996   136   3 Replies

de5iet

The definition of lysogeny is

The definition of lysogeny is

The definition of lysogeny is
A) phage DNA is incorporated into host cell DNA.
B) when the burst time takes an unusually long time.
C) lysis of the host cell due to a phage.
D) the period during replication when virions are not pr

suo90821   124   3 Replies

montgomery

The definitive host of a parasite is

The definitive host of a parasite is

The definitive host of a parasite is
A) the host for immature stages of the parasite.
B) where the mature form of the parasite occurs.
C) also the vector for the parasite.
D) the host that the parasite name is based on.
E) th

Anook   69   1 Reply

berry08

The definitive identification of which of the following organisms is accomplished by hemad-sorption ...

The definitive identification of which of the following organisms is accomplished by hemad-sorption ...

The definitive identification of which of the following organisms is accomplished by hemad-sorption techniques?
 
  a. Chlamydia trachomatis
  b. Mycoplasma hominis
  c. Mycoplasma pneumoniae
  d. Mycoplasma genitalium
[b

ddbeaumont15   29   2 Replies

ddbeaumont15

The degenerating remnant of a corpus luteum is called a(n):

The degenerating remnant of a corpus luteum is called a(n):

The degenerating remnant of a corpus luteum is called a(n):
 
  a. Atretic follicle
  b. Balbiani body
  c. Corpus albicans
  d. Fimbrium
  e. Restiform body

tinkrazy101   55   1 Reply

Trinh Vy

The degradation of mRNA in the cells occurs in clusters known as

The degradation of mRNA in the cells occurs in clusters known as

The degradation of mRNA in the cells occurs in clusters known as
A) iRNA sites.
B) sRNA regions.
C) nuceoli.
D) P bodies.
E) N sites.

Astatine   222   3 Replies

virion

The degree of susceptibility a food has to microbial activity is determined by its

The degree of susceptibility a food has to microbial activity is determined by its

The degree of susceptibility a food has to microbial activity is determined by its
A) chemical characteristics.
B) physical characteristics.
C) water content.
D) chemical characteristics, physical characteristics, and water content.

vfairch   45   2 Replies

vfairch

The deinococci can be categorized as extremophiles.

The deinococci can be categorized as extremophiles.

The deinococci can be categorized as extremophiles.
A) True
B) False

suo90821   83   3 Replies

fanlili

The dengue viruses are spread by (fleas/mosquitoes/ticks).

The dengue viruses are spread by (fleas/mosquitoes/ticks).

The dengue viruses are spread by (fleas/mosquitoes/ticks).

Anook   67   2 Replies

Anook

The dense bodies found in smooth muscle cells are functionally and anatomically analogous to which ...

The dense bodies found in smooth muscle cells are functionally and anatomically analogous to which ...

The dense bodies found in smooth muscle cells are functionally and anatomically analogous to which structure found in skeletal muscle cells?
 
  a. A-band
  b. Intercalated disks
  c. Mitochondria
  d. Sarcoplasmic reticulum

talo_rk   44   1 Reply

bretteeee

The dense growth of algae in an algal bloom leads to increased oxygen levels in lakes that enhance ...

The dense growth of algae in an algal bloom leads to increased oxygen levels in lakes that enhance ...

The dense growth of algae in an algal bloom leads to increased oxygen levels in lakes that enhance the habitat for fish.
A) True
B) False

suo90821   131   3 Replies

TheItor

The depletion of O2 in the muscles of an individual that has exercised for a long period of time is ...

The depletion of O2 in the muscles of an individual that has exercised for a long period of time is ...

The depletion of O2 in the muscles of an individual that has exercised for a long period of time is known as ________.

glisten   167   2 Replies

glisten

The dermis is composed of connective tissue and provides protection from the external environment.

The dermis is composed of connective tissue and provides protection from the external environment.

The dermis is composed of connective tissue and provides protection from the external environment.
A) True
B) False

suo90821   90   3 Replies

Vaddim

The dermis of the skin is composed of stratified epithelium. (True or false?)

The dermis of the skin is composed of stratified epithelium. (True or false?)

The dermis of the skin is composed of stratified epithelium. True or False?

tyressjones   140   2 Replies

tyressjones

The designation "B" for B lymphocytes comes from the

The designation "B" for B lymphocytes comes from the

The designation "B" for B lymphocytes comes from the
A) fact that these cells produce antibodies.
B) bone marrow where these cells mature.
C) fact that these cells are most abundant in the blood..
D) ability of these cel

cuchillo   404   3 Replies

archie90

The designation "group A," used to help classify Streptococcus pyogenes, refers to this bacterium'sA

The designation "group A," used to help classify Streptococcus pyogenes, refers to this bacterium'sA

The designation "group A," used to help classify Streptococcus pyogenes, refers to this bacterium's
A) Lancefield antigen.
B) hemolysis pattern.
C) M protein.
D) type of streptokinase produced.
E) disease assoc

cuchillo   333   3 Replies

archie90