quiz 5 Flashcards
Which of the following disaccharides contains galactose?
Question 1 Answer
a.
sucrose
b.
maltose
c.
lactose
d.
mannose
c.
lactose
Correctly classify the relationship between the following monosaccharides:
–> picture showing double bond in Dif place
Question 2 Answer
a.
Enantiomers
b.
Epimer isomers
c.
Diastereomers
d.
Structural isomers
d.
Structural isomers
Which of the following is NOT typical of a negative feedback loop?
Question 3 Answer
a.
The regulated variable tends to oscillate around a set point
b.
The effector and the sensor are always active due to fluctuations in the regulated variable
c.
The more the regulated variable departs from the set point, the higher the activity of the effector in the system
d.
The output or activity of the system changes quickly, experiencing exponential growth or decline until a limiting event stops the activity of the system
d.
The output or activity of the system changes quickly, experiencing exponential growth or decline until a limiting event stops the activity of the system
Choose the TRUE statement re: Boyle’s law
Question 4 Answer
a.
It explains why the pressure in the alveoli drops as the diaphragm contracts
b.
It applies to liquid fluids as well as gases
c.
It states that volume is directly related to pressure
d.
It explains why the pressure in the pleural fluid drops as the diaphragm relaxes
a.
It explains why the pressure in the alveoli drops as the diaphragm contracts
Which of the following are TRUE of the ventral horn?
Question 5 Answer
a.
It contains the cell bodies of neurons that control skeletal muscle
b.
It is a gray matter, not a white matter structure
c.
It is found in the spinal cord
d.
All of these options are true of the ventral horn
d.
All of these options are true of the ventral horn
“Vibration” information - i.e. from a tuning fork - is carried by which sensory system?
Question 6 Answer
a.
The corticobulbar tract
b.
The corticospinal tract
c.
The spinothalamic tract
d.
The dorsal column-medial lemniscal system
d.
The dorsal column-medial lemniscal system
The condition known as microbial antagonism may be defined as
Question 7 Answer
a.
an unsuccessful microbial invasion due to the presence of preexisting microbes.
b.
a relationship between two organisms where one member harms the other.
c.
a relationship between two organisms where both members benefit.
d.
a relationship between two organisms where only one member benefits.
e.
microorganisms that remain with a person throughout life.
a.
an unsuccessful microbial invasion due to the presence of preexisting microbes.
Which of the following bacterial genera produce(s) endospores?
Question 8 Answer
a.
both Bacillus and Lactobacillus
b.
Clostridium
c.
Bacillus
d.
both Bacillus and Clostridium
e.
Lactobacillus
d.
both Bacillus and Clostridium
A cell that uses an organic carbon source and obtains energy from light would be called a
Question 9 Answer
a.
Lithoautotroph.
b.
Photoautotroph.
c.
Chemoautotroph.
d.
Chemoheterotroph.
e.
Photoheterotroph.
e.
Photoheterotroph.
Plaques are:
Question 10 Answer
a.
stained areas in a cell culture indicating cells infected by a virus.
b.
clear areas in a lawn of cultured cells caused by virus infection.
c.
bacterial colonies on agar
d.
virus colonies on agar
b.
clear areas in a lawn of cultured cells caused by virus infection.
The benefit of continuous cell lines versus primary cell culture for growing viruses is:
Question 11 Answer
a.
continuous cell lines will work with every virus
b.
primary cell culture, while difficult, will work with every virus
c.
the longevity of secondary cell lines
d.
genetic stability of the secondary cell lines
e.
viruses grow better in primary cell culture
c.
the longevity of secondary cell lines
Which of the following is not a cytopathic effect?
Question 12 Answer
a.
transformation (looking like a cancer cell)
b.
cell fusion
c.
inclusion bodies (viral replicative factories)
d.
mononucleated cells
d.
mononucleated cells
Which of the following statements are FALSE regarding adherens junctions?
Question 13 Answer
a.
Adherens junctions can modify intracellular signals associated with cellular growth
b.
Adherens junctions stabilize and strengthen tight junctions
c.
Adherens junctions are located closer to the lumen than tight junctions
d.
Cadherins and catenins are found closely associated with adherens junctions
c.
Adherens junctions are located closer to the lumen than tight junctions
Choose the TRUE statement re: hemidesmosomes
Question 14 Answer
a.
Hemidesmosomes are linked closely to adherens junctions via keratins
b.
Hemidesmosomes express claudins on their intracellular face
c.
Hemidesmosomes are closely associated with the primary cilium
d.
Hemidesmosomes express integrins on their extracellular face
d.
Hemidesmosomes express integrins on their extracellular face
How does gliadin (the major antigen of celiac disease) likely gain access to the lamina propria of the intestine?
Question 15 Answer
a.
Gliadin causes disruption of desmosomes
b.
Gliadin causes disruption of tight junctions
c.
Gliadin causes disruption of hemidesmosomes
d.
Gliadin causes disruption of adherens junctions
b.
Gliadin causes disruption of tight junctions
