Life Sciences
2023 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE XL 2023 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 46–48 of 122. Imported answers require review unless explicitly marked reviewed.
Question 46
Open questionXL-QNAT2 marksNeeds review
If the extracellular concentration of sodium ion (Na⁺) is ten times more than its intracellular concentration, then the sodium equilibrium potential at 20 °C in mV is ______________ (rounded off to two decimal places). Assume that the membrane is permeable only to Na⁺ ions. [Use R = 1.987 cal deg⁻¹ mol⁻¹ and F = 23062 cal mol⁻¹ V⁻¹]
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Open questionXL-RMCQ1 markNeeds review
Which one of the following statements on Casparian strips is correct?
Your answerChoose one option.
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Open questionXL-RMCQ1 markNeeds review
Rotenone is a chemical often used to kill insect pests on crop plants and fishes in lakes. Rotenone acts by inhibiting electron transport from the NADH dehydrogenase enzyme in Complex I to ubiquinone in the mitochondrial electron transport chain. Which one of the following explains why plants can tolerate rotenone application?
Your answerChoose one option.
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