WorksheetsFoundations Week 2
Total questions: 18
Worksheet time: 18mins
What is true regarding the region indicated in green vs the lighter pigmented region?
More T cells
More dendritic cells
More epithelial cells
More macrophages
More Hassall's corpuscles
Which of the following is true regarding lymph tissue and lymphatic vessels?
Thymocytes are derived from thymic progenitor cells
DCs and antigens enter lymph nodes via efferent vessels
Peyer's patches contain B, T, and dendritic cells
Lymphatic ducts are valveless
Lymphatics and blood stream are independent
Which of the following amino acids is only ketogenic?
Methionine
Tryptophan
Isoleucine
Leucine
Phenylalanine
The precursor of serotonin could best be described as:
Aromatic
Nonpolar
Aliphatic
Charged
Sulfur containing
It's exam time and you're drenched in sweat because you were binge streaming The Boys instead of studying. Which of the following is true regarding signaling to your sweat glands right now?
Increased preganglionic stimulation at muscarinic receptors
Increased preganglionic stimulation at adrenergic receptors
Increased postganglionic stimulation at muscarinic receptors
Increased postganglionic stimulation at nicotinergic receptors
Increased postganglionic stimulation at adrenergic receptors
NE binds an alpha 1 receptor coupled to Gq, what happens?
Increased adenylyl cyclase
Decreased adenylyl cyclase
Increased cyclic AMP
Decreased protein kinase C
Increased IP3
The epitope in green will be recognized by:
Antibodies
B cell receptors
T cell receptors
Innate receptors
All of the above recognize
Which of the following is only immunogenic when linked to a carrier?
Immunogens
Haptens
Tolerogen
Mitogen
Adjuvant
Subjecting a protein to extreme heat will most likely reduce it to a structure that:
Is held by hydrogen bonds in the polypeptide backbone
Is a unique sequence of AA in a polypeptide chain
Has a pattern of secondary structural elements in 3D conformation
Is composed of individual polypeptides in a stoichiometric arrangement
Is a structure composed of alpha helixes and beta sheets
An immunoglobulin is an example of what protein structure?
Primary
Secondary
Tertiary
Quaternary
Infant presents with failure to thrive, erythroderma, diarrhea, and markedly decreased B and T cells. This is most likely due to?
Absence of RAG
Decreased VDJ recombination
Limited variability of Fc region
Over-expression of a single Ig isotype
Decreased junctional diversity
Which of the following monomers has both opsonization and complement activation functions?
IgA
IgD
IgG
IgE
IgM
What type of inhibitor is represented by the red line?
Noncompetitive
Competitive
Irreversible
Allosteric
Uncompetitive
Which of the following catalyzes the formation of C bonds w/ O, S, or N?
Oxidoreductase
Transferase
Hydrolases
Lyases
Ligases
A pt w/ deficiency of complement C4 would most likely still be able to activate which of the following?
Alternative pathway
Classical pathway
Lectin pathway
All of the above
Which of the following acts in an autocrine fashion to activate NK cell?
TNFalpha
IFNalpha
IFNBeta
IFNgamma
IL-12
This lipid composed of an ABCD 4 member ring system comprises ~30% of animal cell membranes and is the precursor for bile salt:
Sphingolipid
Phospholipid
Cholesterol
Cholesterol ester
Sterol
Which of the following is a phosphosphingolipid?
Sphingomyelin
Ganglioside
Cerebroside
Globoside
Sulfatide
