उत्तरों सहित नर्सिंग प्रवेश परीक्षाओं के लिए जीव विज्ञान वर्कशीट

मनुष्यों में कौन-सी कोशिकाएँ अर्धसूत्री विभाजन (मिऑसिस) से बनती हैं?

1. Aत्वचा की कोशिकाएँ
2. Bअस्थि मज्जा में लाल रक्त कोशिकाएँ
3. Cयकृत की कोशिकाएँ
4. Dअंडाणु और शुक्राणु

DNA अणु का आकार कैसा होता है?

1. Aएकल सीधी लड़ी
2. Bद्विकुंडलिनी (डबल हेलिक्स)
3. Cचपटा वलय
4. Dत्रिकुंडलिनी (ट्रिपल हेलिक्स)

How many micrometres (µm) are in one millimetre?

1. A1000
2. B10
3. C1 000 000
4. D100

Which DNA bases are purines?

1. ACytosine and guanine
2. BAdenine and guanine
3. CCytosine and thymine
4. DAdenine and thymine

Which process removes carbon dioxide from the atmosphere?

1. ACellular respiration
2. BDecomposition
3. CPhotosynthesis
4. DBurning fossil fuels

A deletion removes exactly three bases, forming one whole codon, from the middle of a gene. What is the most likely result?

1. AThe protein lacks one amino acid but the rest is unchanged
2. BEvery amino acid after the deletion is changed to a new one
3. CNo protein can be made at all
4. DThe protein becomes three times longer

Liver cells take in cholesterol-carrying LDL particles only after the particles bind to specific proteins on the cell surface. Which process is this?

1. AExocytosis
2. BPinocytosis of extracellular fluid
3. CReceptor-mediated endocytosis
4. DSimple diffusion

A patient with type A blood is given type B red blood cells by mistake. What is the cause of the reaction that follows?

1. AThe patient's A antigens dissolve the donor's haemoglobin
2. BAnti-A antibodies on the donor cells attack the patient's plasma
3. CThe donor's B antigens destroy the patient's white blood cells
4. DAnti-B antibodies in the patient's plasma attack the donor cells