The enzyme that catalyzes the breakdown of hydrogen peroxide into water and oxygen is:
A. Catalase
B. Pepsin
C. Lipase
D. Amylase
Answer: Option A
Solution (By JKSSB Mock Tests)
Catalase is an antioxidant enzyme found in peroxisomes that efficiently decomposes hydrogen peroxide (a toxic byproduct) into water and oxygen. Lipase digests fats, amylase starch, pepsin proteins.
Explanation:
In aquatic plants like Hydrilla, the rate of photosynthesis can be estimated by counting the number of oxygen bubbles released per minute under light. Manometry measures pressure changes, respirometry respiration, spectrophotometry light absorbance.
Consider the following statements about the circulatory system:
1. Arteries carry blood away from the heart.
2. Veins have valves to prevent backflow.
3. Capillaries are thick-walled vessels.
Which of the above is/are correct?
Explanation:
Arteries carry blood from the heart; veins have valves; capillaries are thin-walled for exchange. Statement 3 is false. So 1 and 2 are correct.
Explanation:
Megaloblastic anemia is characterized by large, immature RBCs due to impaired DNA synthesis from B₁₂ or folate deficiency. Microcytic is iron deficiency, sickle cell is genetic.
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