उत्तरों सहित नर्सिंग प्रवेश परीक्षाओं के लिए जीव विज्ञान वर्कशीट

अमीनो अम्लों से प्रोटीन किन संरचनाओं पर बनते हैं?

1. Aसेंट्रिओल
2. Bलाइसोसोम
3. Cराइबोसोम
4. Dरसधानियाँ

What does phloem carry in a plant?

1. AChlorophyll to the stem
2. BSugars made in the leaves
3. CWater from the roots only
4. DCarbon dioxide from the air

What is the main role of carbohydrates in the human diet?

1. ATo carry the body's genetic information
2. BTo form antibodies
3. CTo provide a quick source of energy
4. DTo build muscle tissue

HIV is a retrovirus. What does its enzyme reverse transcriptase do?

1. AIt makes DNA from the virus's RNA
2. BIt makes RNA from the host's DNA
3. CIt breaks down the host's ribosomes
4. DIt makes proteins from the virus's DNA

कौन-सा अनुक्रम DNA लड़ी A-T-G-C-C-A का संपूरक है?

1. AU-A-C-G-G-U
2. BT-A-C-G-G-T
3. CA-T-G-C-C-A
4. DG-C-A-T-T-G

Salivary amylase begins the digestion of which nutrient in the mouth?

1. ACellulose
2. BFat
3. CProtein
4. DStarch

Parts of a protein chain coil into alpha helices and fold into beta sheets, held by hydrogen bonds. Which level of protein structure is this?

1. ASecondary structure
2. BQuaternary structure
3. CTertiary structure
4. DPrimary structure

The field of view of a microscope is 0.5 mm wide. About 10 cells fit across it in a line. What is the approximate width of one cell?

1. A5 µm
2. B50 µm
3. C500 µm
4. D0.5 µm