Choose the incorrect statements:
I. Electrons from NADH produced in the mitochondrial matrix are oxidized by complex II
II. Ubiquinones oxidised to ubiquinol by receiving reducing equivalents from complex I
III. Ubiquinol oxidized to ubiquinone by transfer of electrons to complex III
I. Electrons from NADH produced in the mitochondrial matrix are oxidized by complex II
II. Ubiquinones oxidised to ubiquinol by receiving reducing equivalents from complex I
III. Ubiquinol oxidized to ubiquinone by transfer of electrons to complex III
Show Hint
- I and II
- II and III
- I and III
- III only
The Correct Option is A
Solution and Explanation
Statement II: Incorrect — Ubiquinone (Q) is reduced to ubiquinol (QH$_2$), not oxidised, by receiving electrons.
Statement III: Correct — Ubiquinol transfers electrons to Complex III and becomes oxidized to ubiquinone.
Top Questions on Botany
Match the following varieties with their pest/disease resistance:
List I (Variety) List II (Pest/Disease) A Pusa Gaurav I Nematodes B Pusa Sem 2 (Bean) II Stem and fruit borer C Pusa Sawani (Okra) III Jassids, aphids, fruit borer D Parbhani Kranti (Okra) IV Yellow Mosaic Virus - Choose the correct statements:
I. In exothermic reactions, ‘P’ is at a lower level than ‘S’
II. Enzyme activity is affected by temperature due to changes in tertiary structure
III. Low temperature denatures the protein
IV. Ligases remove groups from substrate - Loss of chlorophyll leading to yellowing in leaves is called:
- No. of ATP, protons and electrons required for the formation of 6NH$_3$ molecules in biological nitrogen fixation.
Match the terms in List-I with their correct descriptions in List-II:
\[ \begin{array}{|l|l|} \hline \textbf{List-I} & \textbf{List-II} \\ \hline \text{A) Vivipary} & \text{I) Adaptation to lower environmental stress by germinating seeds while still attached to the parent plant} \\ \text{B) Parthenogenesis} & \text{IV) Development of an embryo from an unfertilized female gamete (asexual reproduction)} \\ \text{C) Meiocytes} & \text{III) Diploid cells specialized to undergo meiosis (e.g., spermatocytes, oocytes)} \\ \text{D) Perennials} & \text{II) Bamboo flowering once at the end of its life cycle (monocarpic perennial)} \\ \hline \end{array} \]
Questions Asked in AP EAPCET exam
- Two blocks of masses 8 kg and 12 kg kept on a smooth horizontal table are connected to the ends of a light string as shown in the figure. If a horizontal force of 500 N is applied to the block of mass 12 kg, then the tension in the string connecting the blocks is
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- If the binding energy per nucleon of deuteron (\( ^1\mathrm{H}^2 \)) is 1.15 MeV and an \(\alpha\)-particle has a binding energy of 7.1 MeV per nucleon, then the energy released per nucleon in the given reaction is \[ ^1\mathrm{H}^2 + ^1\mathrm{H}^2 \rightarrow ^2\mathrm{He}^4 + Q \]
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- If the function \( f \) defined by \[ f(x) = \begin{cases} \dfrac{1 - \cos 4x}{x^2}, & x<0 \\ a, & x = 0 \\ \dfrac{\sqrt{x}}{\sqrt{16 + \sqrt{x}} - 4}, & x>0 \end{cases} \] is continuous at \( x = 0 \), then \( a = \)
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If \( \vec{u}, \vec{v}, \vec{w} \) are non-coplanar vectors and \( p, q \) are real numbers, then the equality:
\[ [3\vec{u} \quad p\vec{v} \quad p\vec{w}] - [p\vec{v} \quad \vec{w} \quad q\vec{u}] - [2\vec{w} \quad q\vec{v} \quad q\vec{u}] = 0 \]
holds for:
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