उत्तरों सहित नर्सिंग प्रवेश परीक्षाओं के लिए जीव विज्ञान वर्कशीट

In biology, what is a clone?

1. AA cell with an extra chromosome
2. BAn organism that carries genes from two different species
3. CAn offspring of two different parents
4. DA genetically identical copy of an organism, cell or gene

विसरण (डिफ़्यूज़न) क्या है?

1. Aकणों का अधिक सांद्रता से कम सांद्रता की ओर गमन
2. BATP के उपयोग से झिल्ली के पार पानी का गमन
3. Cकोशिका द्वारा बड़े कणों को पुटिका में निगल लेना
4. Dकणों का कम सांद्रता से अधिक सांद्रता की ओर गमन

Which sex chromosomes does a typical human male have?

1. AYY
2. BXY
3. CX only
4. DXX

Which statement about Archaea is correct?

1. AThey are a type of virus
2. BThey are prokaryotes, and many live in extreme environments
3. CThey are eukaryotes that have a nucleus and membrane-bound organelles
4. DThey are multicellular plants

Why do red blood cells have a flattened, biconcave disc shape?

1. AIt gives a large surface area for gas exchange
2. BIt helps them divide faster
3. CIt lets them hold a larger nucleus and more DNA
4. DIt makes them stick to vessel walls

Why can DNA profiling (fingerprinting) identify individual people?

1. AEach person's genes code for different amino acids
2. BEvery person has a different number of chromosomes in their cells
3. CDNA in blood differs from DNA in skin
4. DRepeated non-coding DNA regions vary in length between people

Potato cylinders are placed in sugar solutions of different strengths. They gain mass in weak solutions, lose mass in strong ones and show no change at 0.3 mol/L. What can be concluded?

1. APotato cells are always hypertonic to sugar solutions
2. BSugar enters the cells only by active transport, not by diffusion
3. CThe potato cells have a solute concentration of about 0.3 mol/L
4. DThe potato cells contain no water at all

लाल रक्त कोशिका को ऐसे विलयन में रखा जाता है जिसकी विलेय सांद्रता उसके कोशिकाद्रव्य के बराबर है। क्या होता है?

1. Aजल अणु किसी भी दिशा में झिल्ली पार करना बंद कर देते हैं
2. Bपानी की कोई नेट गति नहीं होती; कोशिका अपना आकार बनाए रखती है
3. Cपानी निकलने से कोशिका सिकुड़ जाती है
4. Dकोशिका फूलकर फट जाती है