The enzyme that converts angiotensinogen to angiotensin I is: MCQ with Answer and Explanation

Explanation:
Hemophilia A and B are X-linked recessive disorders caused by mutations in genes for clotting factor VIII or IX on the X chromosome. It predominantly affects males, while females are usually carriers. Down syndrome is an autosomal aneuploidy, cystic fibrosis and sickle cell anemia are autosomal recessive. X-linked disorders follow a characteristic pattern of inheritance.

Explanation:
Expiratory reserve volume (ERV) is the additional air exhaled forcibly after normal exhalation (~1,000–1,200 mL). Tidal volume is normal breath, inspiratory reserve is extra inhaled after normal inhalation, residual volume is air left after maximal exhalation. These are components of lung volumes and capacities.

Explanation:
Sclerenchyma is a simple permanent tissue composed of dead cells with extremely thick, lignified, and pitted cell walls. These cells (fibers and sclereids) are narrow, elongated, and provide rigid mechanical strength, allowing plant parts to withstand bending and pressure. Collenchyma provides flexible support in growing parts, and parenchyma is for storage and photosynthesis (chlorenchyma).