मेडिकल प्रवेश (CEE) – Physics, Chemistry, Zoology, Botany, MAT
मेडिकल प्रवेश (CEE) – Physics, Chemistry, Zoology, Botany, MAT
Medical Entrance (CEE) – Physics, Chemistry, Biology & MAT · २,०३९ प्रश्न
२,०३९ प्रश्न उपलब्ध। मोड छान्नुहोस्:
CEE प्रवेश: प्रश्न र उत्तर
सही लागेको विकल्पमा थिच्नुहोस्। सही भए हरियो, गलत भए रातो देखिन्छ; ३ सेकेन्डपछि सही उत्तर र व्याख्या देखिन्छ।
सही: ० / ०
-
In aerobic respiration of eukaryotes, the oxidative decarboxylation of pyruvic acid to acetyl CoA takes place in the:
सही उत्तर: क) mitochondrial matrix
Pyruvate enters the mitochondrion, where pyruvate dehydrogenase converts it to acetyl CoA, releasing CO₂ and forming NADH.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
C₄ plants such as maize show chloroplast dimorphism, in which the chloroplasts of the bundle sheath cells are:
सही उत्तर: ग) large and agranal (lacking well-developed grana)
Mesophyll chloroplasts are granal and carry out light reactions; the large bundle-sheath chloroplasts lack grana and contain RuBisCO for the Calvin cycle.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
To make one molecule of glucose through the Calvin cycle, a C₃ plant requires:
सही उत्तर: ग) 18 ATP and 12 NADPH
Fixing each CO₂ needs 3 ATP and 2 NADPH; six turns (6 CO₂) are needed for one glucose, i.e. 18 ATP and 12 NADPH.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
In cyclic photophosphorylation:
सही उत्तर: क) only photosystem I is involved and only ATP is formed
Electrons from PS I return to it via the electron transport chain, producing ATP but no NADPH and no O₂.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Besides acting as accessory pigments, carotenoids in chloroplasts:
सही उत्तर: ग) protect chlorophyll from photo-oxidation
Carotenoids absorb additional wavelengths and pass energy to chlorophyll a; they also protect chlorophyll from damage by excess light (photo-oxidation).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
The micronutrient required by plants for the synthesis of the hormone auxin is:
सही उत्तर: क) zinc
Zinc activates enzymes such as carboxylases and is needed for auxin synthesis; molybdenum is part of nitrogenase.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
The mineral element whose best-defined function is in the splitting (photolysis) of water to release oxygen during photosynthesis is:
सही उत्तर: क) manganese
Manganese is a component of the oxygen-evolving complex of photosystem II, where water is split.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Deficiency symptoms of nitrogen and magnesium appear first in the older leaves because these elements are:
सही उत्तर: ग) mobile and are moved from older to younger leaves
Mobile elements such as N, K and Mg are withdrawn from senescing older tissues and sent to young ones, so older leaves show deficiency first.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Substances such as phenyl mercuric acetate and abscisic acid, which reduce transpiration by causing stomatal closure, are called:
सही उत्तर: ख) antitranspirants
Antitranspirants reduce water loss from leaves, for example by closing stomata (PMA, ABA) or by forming a film over the leaf surface.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
When the stem of a well-watered herbaceous plant is cut near the base in the morning, sap oozes out of the stump. This is evidence of:
सही उत्तर: क) root pressure
Active absorption of ions makes water move into the xylem of the root, building a positive root pressure that pushes sap out of the cut stem.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
यी अभ्यास प्रश्न हुन्, आधिकारिक प्रश्न होइनन्। पाठ्यक्रम, विज्ञापन र नतिजाका लागि सम्बन्धित निकायको आधिकारिक वेबसाइट हेर्नुहोस्। उत्तरमा गल्ती भेटे प्रश्नमुनिको "टिप्पणी / गल्ती रिपोर्ट" मा लेख्नुहोस्।
नमस्ते! पाठ्यक्रम, सामान्य ज्ञान, भाषा परीक्षा वा कुनै प्रश्नको उत्तर बुझ्न सोध्नुहोस्।
AI ले गल्ती गर्न सक्छ। महत्वपूर्ण कुरा आधिकारिक स्रोतमा जाँच्नुहोस्।