उत्तरों सहित नर्सिंग प्रवेश परीक्षाओं के लिए जीव विज्ञान वर्कशीट

What is an adaptation?

1. AAny mutation that damages a gene
2. BA disease that weakens a population
3. CA change an organism makes during its lifetime that it then passes on
4. DAn inherited trait that helps an organism survive in its environment

प्रोकैरियोटिक कोशिकाओं, जैसे जीवाणुओं, में क्या नहीं होता?

1. ADNA के रूप में आनुवंशिक पदार्थ
2. Bराइबोसोम
3. Cझिल्ली से घिरा केंद्रक
4. Dकोशिका झिल्ली

Which pigment absorbs light energy for photosynthesis?

1. AChlorophyll
2. BKeratin
3. CMelanin
4. DHaemoglobin

खुरदरी अंतःप्रद्रव्यी जालिका (रफ़ ER) को "खुरदरा" रूप क्या देता है?

1. Aउसकी सतह पर संगृहीत वसा की बूँदें
2. Bउसकी झिल्लियों के भीतर क्लोरोप्लास्ट
3. Cउसकी सतह से जुड़े राइबोसोम
4. Dउसकी बाहरी ओर जुड़े लाइसोसोम

A person catches chickenpox once and does not usually become ill with it again. Why?

1. AAntibodies from the first infection turn into new viruses
2. BThe skin becomes thicker after the first infection
3. CMemory cells give a faster, stronger response the next time
4. DThe virus stays in the blood and kills new viruses

The results of an experiment do not support the hypothesis. What should the scientist do next?

1. AReport that the hypothesis was proven correct
2. BChange the data so they fit the hypothesis
3. CRevise the hypothesis and test it again
4. DStop doing any further research on the question

Fresh liver is dropped into hydrogen peroxide and bubbles form quickly. Boiled liver gives no bubbles. What is the best conclusion?

1. ALiver contains an enzyme that is destroyed by boiling
2. BHydrogen peroxide is broken down only by heat
3. CThe bubbles are carbon dioxide from respiration
4. DBoiled liver contains more hydrogen peroxide than fresh liver

Why do phospholipids arrange themselves into a double layer in water?

1. ATheir heads are hydrophobic and their tails are hydrophilic
2. BTheir heads are hydrophilic and their tails are hydrophobic
3. CThey carry a strong positive charge on both ends
4. DThey are fully soluble in water