उत्तरों सहित नर्सिंग प्रवेश परीक्षाओं के लिए जीव विज्ञान वर्कशीट

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

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

In an enzyme reaction, what is the substrate?

1. AThe part of the enzyme that changes shape
2. BThe substance that the enzyme acts on
3. CThe gene that codes for the enzyme
4. DThe product released at the end

What is a genetically modified organism (GMO)?

1. AAn organism that has been grown in a greenhouse
2. BAn organism produced by normal sexual reproduction between two parents
3. CAn organism that has caught a virus
4. DAn organism whose DNA has been changed by genetic engineering

Why are G–C base pairs held together more strongly than A–T pairs?

1. AG–C pairs are joined by strong covalent bonds instead of hydrogen bonds
2. BG and C are both purines, so they fit more tightly
3. CA–T pairs are found only in RNA
4. DG–C pairs form three hydrogen bonds, and A–T pairs form two

Why must human gametes be haploid?

1. ASo that the zygote has the normal number of 46 chromosomes
2. BSo that the gametes can make more proteins
3. CSo that the gametes can divide quickly by mitosis
4. DSo that the zygote has twice the normal number of chromosomes

संतृप्त वसा असंतृप्त वसा से किस प्रकार भिन्न है?

1. Aउनमें नाइट्रोजन होती है और वे प्रोटीन बनाती हैं
2. Bवे पानी में आसानी से घुल जाती हैं
3. Cउनमें C=C द्विआबंध नहीं होते और वे सामान्यतः ठोस होती हैं
4. Dउनमें बहुत-से द्विआबंध होते हैं और वे कमरे के तापमान पर तरल होती हैं

A solution contains 5 mg of a substance in every millilitre. How many milligrams are in 0.02 L of the solution?

1. A100 mg
2. B1000 mg
3. C0.1 mg
4. D10 mg

एक प्रकाशीय सूक्ष्मदर्शी में 10× नेत्रिका (आईपीस) और 40× अभिदृश्यक लेंस है। कुल आवर्धन कितना है?

1. A400×
2. B50×
3. C40×
4. D4000×