उत्तरों सहित नर्सिंग प्रवेश परीक्षाओं के लिए जीव विज्ञान वर्कशीट

What is a Punnett square used for?

1. AShowing the order of genes on a chromosome
2. BCounting the chromosomes in a cell
3. CPredicting the possible genotypes of offspring
4. DMeasuring the size of a cell

What do centrioles do in an animal cell?

1. AThey store the cell's digestive enzymes until they are needed
2. BThey help organise the spindle during cell division
3. CThey capture light for photosynthesis
4. DThey make lipids for the cell membrane

What is apoptosis?

1. AFusion of two gametes
2. BUncontrolled cell division
3. CDivision of the cytoplasm
4. DProgrammed cell death

एक DNA टेम्पलेट लड़ी T-A-C पढ़ती है। संगत mRNA कोडॉन क्या है?

1. AT-A-C
2. BA-U-G
3. CU-T-G
4. DA-T-G

कठिन व्यायाम के दौरान पेशी कोशिकाओं में ऑक्सीजन की कमी हो जाती है। तब वे ग्लूकोज़ से इसके बजाय क्या बनाती हैं?

1. Aबड़ी मात्रा में ATP और ऑक्सीजन
2. Bअल्कोहल और कार्बन डाइऑक्साइड
3. Cलैक्टिक अम्ल (लैक्टेट) और थोड़ा-सा ATP
4. Dग्लाइकोजन और पानी

Golden rice was genetically modified to make beta-carotene. What is the aim?

1. ATo make the rice grow faster in cold climates
2. BTo increase the protein content of the rice
3. CTo help prevent vitamin A deficiency
4. DTo make the rice resistant to all insects

Some viruses are surrounded by a lipid envelope taken from the host cell's membrane. Why are these viruses usually inactivated easily by soap and alcohol?

1. AThe envelope is made of chitin, which soap digests
2. BEnveloped viruses have no proteins at all
3. CSoap and alcohol break up the lipid envelope
4. DSoap and alcohol dissolve the viral DNA directly

A breastfed baby receives antibodies from its mother's milk. Why does this protection last only a short time?

1. AThe baby's stomach makes the antibodies more active
2. BThe antibodies from breast milk attack the baby's own red blood cells
3. CThe antibodies turn into memory cells after a few weeks
4. DThe baby did not make these antibodies and forms no memory cells