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ABSITE Questions and Answers all Verified 100% Correct| Latest 2025

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  • January 10, 2025
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ABSITE Questions and Answers all Verified 100%
Correct| Latest 2025

Long-chain FAs enter the body through terminal lacteals (absorption through the
lymphatic system) either as free LCFAs or as chylomicrons


Medium- and short-chain FAs along with proteins/CHO enter through the portal
circulation


Cells divide during what phase of the cell cycle?


a. G1
b. S
c. G2

d. M - ✔✔(d)


Cells divide during the M phase (most radiosensitive)


Cell cycle length is determined by what phase of the cell cycle?


a. G1
b. S
c. G2

d. M - ✔✔(a)

,G1 ↔ G0 phase determines cell cycle length (most variable cell period)


Most RNA/protein synthesis


Of the following, which is the most critical component in the neovascularization of
tumor metastases?


a. HER receptor
b. VEGF receptor
c. Neu receptor

d. FGF receptor - ✔✔(d)


Vascular endothelial growth factor (VEGF) receptor


For its anticoagulation effects, heparin binds:


a. Protein C
b. Protein S
c. Anti-thrombin III

d. Factor VII - ✔✔(c)


ATIII (heparin-ATIII complex binds thrombin, factor IX, factor X, and factor XI)


7 days after a kidney transplant, your patient develops severe acute rejection with
vasculitis on biopsy. You decide to start the monoclonal antibody OKT3. Monoclonal
antibodies:

,a. Bind 1 epitope at one site
b. Bind 1 epitope at multiple sites
c. Bind multiple epitopes on a single antigen

d. Bind multiple epitopes on multiple antigens - ✔✔(a)


They bind one epitope at the exact same binding site


You start coumadin on a patient with a pulmonary embolus. Three days later, he starts
sloughing off skin across his arms and legs. All of the following are true of this patients
most likely condition except:


a. This likely would have been prevented by starting heparin before coumadin
b. Patients with protein C deficiency are more susceptible to this problem
c. The skin sloughing is caused by skin necrosis

d. This is likely due to hemophilia A - ✔✔(d)


Coumadin-induced skin necrosis occurs in patients started on coumadin without being
given heparin first. It results from a relatively hypercoagulable state that can occur in
some individuals because of the shorter half-life of protein C & S compared to factors II,
VII, IX, and X. Protein C & S ↓ after coumadin before the other factors ↓, resulting in a
relatively hypercoagulable state.


While performing a LAR for colon cancer in a patient on chronic dialysis, you notice a
significant amount of bloody oozing from your dissection plane. All of the following are
true of uremic induced platelet dysfunction except:


a. Down regulates GpIb

, b. Down regulates GpIIb/IIIa
c. Stimulates von Willebrand's factor release

d. Treatment of choice is dialysis - ✔✔(c)


Uremia downregulates GpIb, GpIIb/IIIa, and vWF


Dialysis is the initial treatment of choice for uremic coagulopathy. Other therapeutic
options include DDAVP and conjugated estrogens (which stimulate the release of factor
VIII and vWF).


The most common blood transfusion reaction is:


a. Clerical error leading to ABO incompatibility
b. Transfusion related ALI
c. Delayed hemolysis from reaction to minor antigens

d. Febrile non-hemolytic transfusion reaction - ✔✔(d)


Occurs from WBCs in the donor blood


Clerical error leading to ABO incompatibility is the most common transfusion reaction
leading to DEATH


Prevention of febrile non-hemolytic transfusion reaction in patients requiring blood
involves:


a. Heating blood to destroy the WBCs
b. Prophylactic antibiotics

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