Other Biology Answers

what are the differences between the different categories of pediatric patients?

1. The best definition of antigen is: (Points : 2)
a red or white blood cell
A foreign substance that elicits an immune response
A protein that combines with antibodies
an allergic reaction


2. Macrophages and neutrophils are primary components in which branch of the immune system? (Points : 2)
innate
adaptive


3. B cells are part of which branch of the immune system? (Points : 2)
innate
lymphatic
external
acquired


4. Which of the following is a protein produced by the immune system in response to an infectious agent? (Points : 2)
macrophage
antigen
antibody
riboflavin


5. Immune cells release _______ in order to recruit other immune cells to the site of injury. (Points : 2)
microkines
cytokines
antibiotics
antibodies


6. The Complement protein cascade is the same for the classical pathway, alternative pathway, and lectin pathway beginning with the activation of: (Points : 3)
C1
C2
C3
C5


7. Macrophages are activated by antigens coated in which Com

26. Which of the following is NOT a subtype of Helper T cell? (Points : 3)
Th1
Th6
Th17
Th2


27. Helper T cells express which co-receptor in the surface of their cell? (Points : 3)
CD6
CD4
CD5
CD1


28. Which organ is responsible for screening blood for the presence of pathogens? (Points : 3)
lymph nodes
liver
bone marrow
spleen


29. When a lymph node becomes swollen, the most common reason is (Points : 3)
Infection nearby
Blocked lymphatic vessel
Blocked capillary vessel
Heat exhaustion


30. Which cells make up the lymphoid follicles? (Points : 3)
T cells
B cells
Natural killer cells
follicular dendritic cells

31. Which of the following is responsible for movement of immune cells through a lymph node? (Points : 3)
Granzyme
Chemokines
Hemoglobin
Gravity


32. T regulatory cells (T regs) function to (Points : 3)
Activate naïve Cytotoxic T cells
Activate dendritic cells
Downregulate an immune response
Regulate production of T and B cells in bone marrow


33. Which event is the primary reason that the innate and cellular immune systems may be turned down or off? (Points : 3)
more B cells are activated
decrease in free antigen
antibody production is stopped
T cells are short-lived


34. Where do most lymphocytes come in contact with their antigen? (Points : 3)
Bone Marrow
Spleen
Lymph node
Liver

Which of the following is an example of a primary lymphoid organ?
mucosal-associated lymphoid tissue (MALT)
lymph node
bone marrow
spleen

population of tree salamanders is highly variable in color and blends easily with the
surrounding, colorful vegetation. After a factory upstream impacts their environment, several
species of trees die off and only those with one color of leaf and flower are left. Within several
generations, the salamander population has reduced variability in color.

do seals & sea lions have vestigial bones?