Download PDF – Biology Practice Test 2 – Unit 1 (Cell Biology & Genetics – SET 2/4)
List I:
P. Microfilaments
Q. Microtubules
R. Intermediate Filaments.
List II:
1. Tubulin heterodimers
2. Keratins/Vimentins
3. Globular Actin.
सूची I:
P. माइक्रोफिलामेंट्स
Q. सूक्ष्मनलिकाएं
R. मध्यवर्ती फिलामेंट्स।
सूची II:
1. ट्युबुलिन हेटेरोडिमर
2. केराटिन/विमेंटिन
3. ग्लोबुलर एक्टिन।
Reason (R): One strand runs in the 5' to 3' direction while the complementary strand runs in the 3' to 5' direction, allowing stable hydrogen bonding between bases.
कारण (R): एक रज्जु 5' से 3' दिशा में चलता है जबकि पूरक रज्जु 3' से 5' दिशा में चलता है, जिससे नाइट्रोजन क्षारकों (bases) के बीच स्थिर हाइड्रोजन बॉन्डिंग होती है।
1. In mammalian females, one of the two X chromosomes in somatic cells undergoes random inactivation.
2. This inactivation occurs during early embryonic development, forming a Barr body.
Which of the statements given above is/are correct?
1. स्तनधारी मादाओं में, दैहिक कोशिकाओं में दो X गुणसूत्रों में से एक यादृच्छिक रूप से निष्क्रिय हो जाता है।
2. यह निष्क्रियकरण प्रारंभिक भ्रूण विकास के दौरान होता है, जिससे बार बॉडी (Barr body) बनती है।
उपर्युक्त कथनों में से कौन-सा/से सही है/हैं?
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