उत्तरों सहित नर्सिंग प्रवेश परीक्षाओं के लिए जीव विज्ञान वर्कशीट

यूकैरियोटिक कोशिका का अधिकांश DNA कहाँ पाया जाता है?

1. Aलाइसोसोम में
2. Bकेंद्रक में
3. Cकोशिका भित्ति में
4. Dकोशिका झिल्ली में

Which characteristic is shared by all living things?

1. AThey are made of many cells
2. BThey respond to changes in their environment
3. CThey have a backbone and a brain
4. DThey make their own food by photosynthesis

What is a model in science?

1. AA simplified representation of a real system
2. BThe control group of a study
3. CA single measurement from an experiment
4. DAn exact copy that has no limitations

What are introns?

1. AShort pieces of DNA made on the lagging strand
2. BCoding sections joined together to form the mature mRNA
3. CCodons that tell the ribosome to stop translation
4. DNon-coding sections removed from pre-mRNA before translation

An organism is multicellular, makes its own food by photosynthesis and has cell walls of cellulose. Which kingdom does it belong to?

1. APlants
2. BAnimals
3. CFungi
4. DBacteria

What happens to an enzyme after it has catalysed a reaction?

1. AIt becomes part of the product and leaves with it
2. BIt changes into the substrate
3. CIt is broken down into amino acids
4. DIt is released unchanged and can be used again

जीवाणु का मुख्य गुणसूत्र कहाँ पाया जाता है, और उसमें अतिरिक्त कौन-सा DNA हो सकता है?

1. Aन्यूक्लिऑइड में, छोटे प्लास्मिडों के साथ
2. Bराइबोसोमों में, अतिरिक्त गुणसूत्रों के साथ
3. Cकेंद्रक में, माइटोकॉन्ड्रियल DNA के साथ
4. Dकोशिका भित्ति में, RNA जीनों के साथ

A karyotype shows three copies of chromosome 21. Which condition does this indicate, and how many chromosomes does the person have?

1. ATurner syndrome, with 47 chromosomes
2. BKlinefelter syndrome, with 45 chromosomes
3. CDown syndrome, with 45 chromosomes
4. DDown syndrome, with 47 chromosomes