उत्तरों सहित नर्सिंग प्रवेश परीक्षाओं के लिए जीव विज्ञान वर्कशीट

कोशिका झिल्ली की मुख्य संरचना क्या है?

1. Aपेप्टिडोग्लाइकन की मोटी भित्ति
2. Bअंतःस्थापित प्रोटीनों वाली फ़ॉस्फ़ोलिपिड द्विपरत
3. Cस्टार्च अणुओं की एकल परत
4. Dसेलुलोज़ रेशों और लिग्निन की कठोर परत

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

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

What is a chromosome?

1. AA small organelle in the cytoplasm that makes ATP for the cell
2. BA long DNA molecule, packed with proteins, carrying many genes
3. CA strand of RNA that leaves the nucleus
4. DA single gene that codes for one protein

A solution of pH 4 is compared with a solution of pH 6. How many times more hydrogen ions does the pH 4 solution have?

1. A20 times
2. B2 times
3. C100 times
4. D10 times

What is the difference between an epidemic and a pandemic?

1. AA pandemic affects only one town
2. BA pandemic spreads across many countries or continents
3. CAn epidemic affects the whole world at once
4. DAn epidemic is caused only by bacteria

In gel electrophoresis, why does DNA move towards the positive electrode?

1. ADNA has a negative charge from its phosphate groups
2. BDNA has a positive charge from the nitrogen bases it contains
3. CDNA is pulled by gravity through the gel
4. DDNA has no charge and moves at random

Ignoring crossing over, how many different combinations of chromosomes can one person's gametes have because of independent assortment?

1. A2²³, about 8 million
2. B46, one for each chromosome
3. C23², about 529
4. D2 × 23, which is 46

Two parents are both AaBbCc, and the three genes assort independently. What is the probability that a child is aabbcc?

1. A3/64
2. B1/64
3. C1/8
4. D1/16