Most suitable antimalarial for pregnant women?

Correct Answer: C

Rationale: The correct answer is C: Quinine and clindamycin. Quinine is recommended for treating malaria in pregnant women due to its safety profile during pregnancy. Clindamycin is often used in combination with quinine to enhance efficacy and reduce the risk of parasite resistance. - A (Atovaquone and proguanil) is contraindicated in pregnancy due to limited safety data. - B (Quinine and doxycycline) is not recommended in pregnant women as doxycycline can cause adverse effects on fetal development. - D (Mefloquine) is generally not recommended in pregnancy due to potential risks to the fetus.

Correct Answer: C

Rationale: Step 1: Neutrophils, bands, metamyelocytes, myelocytes increased indicates a myeloproliferative disorder. Step 2: Basophils, eosinophils increased suggest a myeloid origin. Step 3: Platelets increased is common in chronic myelocytic leukemia (CML) due to myeloid proliferation. Summary: A is incorrect as it is associated with abnormal lymphoid cells. B is incorrect as it is a lymphoid disorder. D is incorrect as it is a lymphoid leukemia.

Correct Answer: C

Rationale: The correct answer is C because a hapten is a small chemical grouping that can bind to preformed antibodies but cannot induce an immune response on its own. Haptens require a carrier molecule to become immunogenic. Choice A (An epitope) is incorrect because an epitope is the specific part of an antigen recognized by an antibody. Choice B (A paratope) is incorrect as a paratope is the part of an antibody that binds to an antigen. Choice D (A carrier) is incorrect because a carrier is a molecule that can bind to a hapten to make it immunogenic.

Correct Answer: A

Rationale: Step 1: Basophils are a type of leukocyte, so they are included in the total leukocyte count. Step 2: Basophils make up less than 0.2% of total leukocytes in the blood. Step 3: Therefore, choice A is correct as basophils comprise a very small percentage of leukocytes. Summary: Choice B is incorrect as basophil granules stain with basic dyes like Toluidine blue. Choice C is incorrect as basophils have a shorter lifespan compared to several months. Choice D is incorrect as basophils play a key role in anaphylaxis through the release of histamine.

Correct Answer: B

Rationale: The correct answer is B because the spleen does not store extra iron in ferritin. The spleen functions primarily to destroy old or defective red blood cells (choice A), break down hemoglobin (choice C), and store platelets not circulating (choice D). The spleen does not have a significant role in iron storage; that function is mainly carried out by the liver and bone marrow. Therefore, choice B is incorrect.