उत्तरों सहित नर्सिंग प्रवेश परीक्षाओं के लिए जीव विज्ञान वर्कशीट

प्रोकैरियोटिक कोशिकाओं, जैसे जीवाणुओं, में क्या नहीं होता?

1. Aकोशिका झिल्ली
2. Bराइबोसोम
3. Cझिल्ली से घिरा केंद्रक
4. DDNA के रूप में आनुवंशिक पदार्थ

What is a monosaccharide?

1. AA fat made of glycerol and fatty acids
2. BTwo sugars joined together, such as sucrose
3. CA single sugar unit, such as glucose
4. DA chain of many amino acids

What is a mutagen?

1. ASomething that can cause changes in DNA
2. BAn enzyme that copies DNA
3. CA protein that repairs damaged DNA
4. DA cell that divides without control

Nearly all cells in a person's body contain the same DNA. Why do nerve cells and muscle cells look and work so differently?

1. ADifferent genes are switched on in each type of cell
2. BMuscle cells have extra DNA from mitochondria
3. CNerve cells have lost the genes for muscle proteins
4. DEach cell type has a different set of chromosomes

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

1. AU-A-C-G-G-U
2. BA-T-G-C-C-A
3. CG-C-A-T-T-G
4. DT-A-C-G-G-T

What is the function of the pores in the nuclear envelope?

1. AThey attach the nucleus to the cell membrane
2. BThey let chromosomes leave the nucleus to be copied
3. CThey let molecules such as mRNA pass in and out
4. DThey make ribosomal RNA for the cell

Which parent's gamete decides the biological sex of a human baby, and why?

1. AThe mother's, because an egg carries either an X or a Y
2. BBoth equally, because each gives one Y chromosome
3. CThe mother's, because she gives two X chromosomes
4. DThe father's, because a sperm carries either an X or a Y

शरीर दीर्घकालिक ऊर्जा ग्लाइकोजन के बजाय वसा के रूप में क्यों संगृहीत करता है?

1. Aवसा रक्त में आसानी से घुल जाती है
2. Bवसा एक प्रकार का प्रोटीन है
3. Cग्लाइकोजन को ग्लूकोज़ में नहीं तोड़ा जा सकता
4. Dवसा प्रति ग्राम दोगुनी से अधिक ऊर्जा रखती है