Micb 212 ubc Questions With Complete Solutions
Acute inflammation Correct Answers -short duration and is the
initial response to an infectious agent.
- no tissue damage
Aerosol transmission Correct Answers Transmission of a
pathogen through the atmosphere often in infective droplets
from a sneeze or cough (e.g., tuberculosis, influenza, pneumonic
plague). Sometimes referred to as "droplet transmission."
Anatomical and physiological barriers Correct Answers -intact
skin provides a physical barrier
-mucosal surfaces of the gut, respiratory urogenital and
conjunctivae surfaces,
-stomach acid, lysozyme and other antimicrobial body
secretions.
biochemical defenses Correct Answers fatty acids, acidity,
lysozyme, mucus
Bone marrow Correct Answers 1) Centre part of the long bones
in your body
2) Where B-cells mature and develop
3) primary lymphoid organ
Both MHC I and MHC II are synthesized by Correct Answers
ribosomes in the cytoplasm of the cell
Chronic inflammation Correct Answers -longer duration
(months to years)
, -in the presence of a persistent infectious agent
-is involvement of activated macrophages and T cells
- tissue damage
Cross-presentation Correct Answers -MHC class I proteins
display peptides derived from exogenous proteins.
-One model of cross-presentation suggests that peptides are
derived from antigens (e.g., a virus particle) taken up by the cell
in an endosome or a phagosome, and the contents of this vesicle
are diverted to the proteasome. From there, the processing of
peptides follows the endogenous pathway.
Dendritic cells Correct Answers -innate and adaptive responses
Derived from lymphoid cells and myeloid cell.
- develop in bone marrow
- activate T cells and imitating the adaptive immune system
- communicate with T cells
- live for few days
endogenous pathway Correct Answers -the intracellular
proteins are degraded into peptides by the proteasome (a
protease complex located in the cytoplasm),
-transporter proteins called TAP proteins move the resulting
peptides from the cytoplasm into the lumen of the endoplasmic
reticulum (ER),
-a peptide binds to the nascent MHC class I protein,
-the MHC class I-peptide complexes are then transported to the
cell surface.
Erythrocytes are Correct Answers erythrocytes( red blood)
carry oxygen tissues
Acute inflammation Correct Answers -short duration and is the
initial response to an infectious agent.
- no tissue damage
Aerosol transmission Correct Answers Transmission of a
pathogen through the atmosphere often in infective droplets
from a sneeze or cough (e.g., tuberculosis, influenza, pneumonic
plague). Sometimes referred to as "droplet transmission."
Anatomical and physiological barriers Correct Answers -intact
skin provides a physical barrier
-mucosal surfaces of the gut, respiratory urogenital and
conjunctivae surfaces,
-stomach acid, lysozyme and other antimicrobial body
secretions.
biochemical defenses Correct Answers fatty acids, acidity,
lysozyme, mucus
Bone marrow Correct Answers 1) Centre part of the long bones
in your body
2) Where B-cells mature and develop
3) primary lymphoid organ
Both MHC I and MHC II are synthesized by Correct Answers
ribosomes in the cytoplasm of the cell
Chronic inflammation Correct Answers -longer duration
(months to years)
, -in the presence of a persistent infectious agent
-is involvement of activated macrophages and T cells
- tissue damage
Cross-presentation Correct Answers -MHC class I proteins
display peptides derived from exogenous proteins.
-One model of cross-presentation suggests that peptides are
derived from antigens (e.g., a virus particle) taken up by the cell
in an endosome or a phagosome, and the contents of this vesicle
are diverted to the proteasome. From there, the processing of
peptides follows the endogenous pathway.
Dendritic cells Correct Answers -innate and adaptive responses
Derived from lymphoid cells and myeloid cell.
- develop in bone marrow
- activate T cells and imitating the adaptive immune system
- communicate with T cells
- live for few days
endogenous pathway Correct Answers -the intracellular
proteins are degraded into peptides by the proteasome (a
protease complex located in the cytoplasm),
-transporter proteins called TAP proteins move the resulting
peptides from the cytoplasm into the lumen of the endoplasmic
reticulum (ER),
-a peptide binds to the nascent MHC class I protein,
-the MHC class I-peptide complexes are then transported to the
cell surface.
Erythrocytes are Correct Answers erythrocytes( red blood)
carry oxygen tissues
