Total RBC count for Women is?

Correct Answer: C

Rationale: The correct answer is C (4.0-5.0). The normal range for total RBC count in women is typically between 4.0-5.0 million cells per microliter. This range represents the standard values accepted in clinical practice. Choice A (4.4-6) and D (4.2-5.2) are higher than the normal range for women, indicating polycythemia. Choice B (4.2-5) is slightly lower than the usual range, which could suggest anemia. Therefore, the correct choice is C as it falls within the expected range for total RBC count in women.

Correct Answer: D

Rationale: The correct answer is D: Sideroblastic anemia. This type of anemia is characterized by the bone marrow's inability to use iron properly for hemoglobin synthesis due to an inherited cause. Sideroblastic anemia is specifically associated with defects in heme synthesis, leading to the accumulation of iron in mitochondria. A: Iron deficiency anemia is caused by a lack of iron intake or absorption. B: Hypochromic anemia refers to anemia with abnormally low levels of hemoglobin in red blood cells. C: Aplastic anemia is due to bone marrow failure, leading to decreased production of all blood cell types.

Correct Answer: A

Rationale: Rationale: 1. Absolute lymphocytosis >5000/mm^3 without other symptoms indicates low tumor burden. 2. In Rai Staging System, Stage 0 represents low risk with lymphocytosis only. 3. No adenopathy, hepatosplenomegaly, anemia, thrombocytopenia rules out higher stages. 4. Hence, the correct answer is A: Stage 0. Other choices are incorrect due to absence of additional symptoms.

Correct Answer: A

Rationale: The correct answer is A: Tense. In the tense form of the hemoglobin (Hb) molecule, the binding of oxygen is hindered, leading to low oxygen affinity. This form occurs in tissues where oxygen is needed, promoting oxygen release. The relaxed form (choice B) has higher oxygen affinity, favoring oxygen binding. Arterial (choice C) and venous (choice D) refer to the oxygen saturation levels in blood, not directly related to the oxygen affinity of Hb molecules.

Correct Answer: C

Rationale: The correct answer is C: Polarizing microscopy. Polarizing microscopy is valuable in identifying crystals that rotate light because it can distinguish between isotropic and anisotropic materials, such as crystals. When polarized light passes through an anisotropic material like crystal, the light waves are split into ordinary and extraordinary rays, causing the crystals to rotate light. This phenomenon, known as birefringence, is observed under polarizing microscopy. Incorrect Choices: A: Compound brightfield microscopy does not provide the necessary contrast to identify crystals that rotate light. B: Darkfield microscopy is used for observing light scattering, not for identifying crystals that rotate light. D: Phase-contrast microscopy is used to enhance contrast in transparent samples, not specifically for identifying crystals that rotate light.