उत्तरों सहित नर्सिंग प्रवेश परीक्षाओं के लिए जीव विज्ञान वर्कशीट

What is a Punnett square used for?

1. AShowing the order of genes on a chromosome
2. BMeasuring the size of a cell
3. CPredicting the possible genotypes of offspring
4. DCounting the chromosomes in a cell

What is the correct order of the phases of mitosis?

1. AMetaphase, prophase, anaphase, telophase
2. BProphase, metaphase, anaphase, telophase
3. CProphase, anaphase, metaphase, telophase
4. DTelophase, anaphase, metaphase, prophase

Which definition of a species is most often used for animals?

1. AAll the animals that eat the same food
2. BAny organisms that look alike
3. CA group that can interbreed and have fertile offspring
4. DAll of the different organisms that live together in one area

लाल रक्त कोशिका को बहुत नमकीन (अतिपरासरी, हाइपरटोनिक) विलयन में रखा जाता है। क्या होता है?

1. Aपानी कोशिका से बाहर निकलता है और वह सिकुड़ जाती है
2. Bकुछ नहीं बदलता क्योंकि नमक पार नहीं जा सकता
3. Cनमक कोशिका में प्रवेश करता है और वह फूल जाती है
4. Dपानी कोशिका में प्रवेश करता है और वह फट जाती है

To insert a human gene into a bacterial plasmid, scientists cut both the gene and the plasmid with the same restriction enzyme. Why?

1. ASo both pieces become exactly the same length
2. BSo the gene is turned into RNA
3. CSo the cut ends match and can join together
4. DSo the plasmid loses all its genes

Why is a buffer system important in blood?

1. AIt resists changes in pH
2. BIt raises the blood glucose level
3. CIt makes the blood clot faster
4. DIt carries oxygen to the tissues

एक जीवाणु हर 20 मिनट में विभाजित होता है। यदि कोई नहीं मरता, तो 2 घंटे बाद कितने जीवाणु होंगे?

1. A128
2. B12
3. C64
4. D32

Two genes lie very close together on the same chromosome. In a test cross, most offspring look like the parents instead of the expected 1:1:1:1 ratio. Why?

1. ABoth genes show incomplete dominance
2. BThe genes are linked and are rarely separated by crossing over
3. CA frameshift mutation happened in both genes
4. DThe genes are on different chromosomes and assort independently