उत्तरों सहित नर्सिंग प्रवेश परीक्षाओं के लिए जीव विज्ञान वर्कशीट

What is a monomer?

1. AA very large molecule that is made of many smaller units
2. BA small unit that joins with others to form a polymer
3. CA molecule that contains no carbon
4. DAn enzyme that breaks down polymers

मनुष्य की एक सामान्य शरीर कोशिका में कितने गुणसूत्र होते हैं?

1. A92
2. B46
3. C23
4. D44

What is the correct order of the phases of mitosis?

1. AProphase, metaphase, anaphase, telophase
2. BProphase, anaphase, metaphase, telophase
3. CTelophase, anaphase, metaphase, prophase
4. DMetaphase, prophase, anaphase, telophase

In which phase of mitosis do the chromosomes condense and the nuclear envelope break down?

1. AMetaphase
2. BAnaphase
3. CTelophase
4. DProphase

A tall pea plant could be TT or Tt. Which cross will best reveal its genotype?

1. ACross it with another tall plant
2. BLet it grow for a longer time
3. CCross it with a TT plant
4. DCross it with a short (tt) plant

समजात गुणसूत्रों के बीच जीन-विनिमय (क्रॉसिंग ओवर) कब होता है?

1. Aमिऑसिस की टीलोफ़ेज़ II में
2. Bमाइटोसिस की एनाफ़ेज़ में
3. Cइंटरफ़ेज़ की S अवस्था में
4. Dमिऑसिस की प्रोफ़ेज़ I में

A human body cell has 46 chromosomes in G1. How many chromatids does it have at metaphase of mitosis?

1. A23
2. B92
3. C46
4. D184

At dawn, a plant shows no overall uptake or release of oxygen or carbon dioxide. What is the best explanation?

1. AIt has stopped both photosynthesis and respiration until it is light
2. BIt only respires at dawn
3. CIts rate of photosynthesis equals its rate of respiration
4. DIts stomata are permanently closed at dawn