उत्तरों सहित नर्सिंग प्रवेश परीक्षाओं के लिए जीव विज्ञान वर्कशीट

Which pigment absorbs light energy for photosynthesis?

1. AChlorophyll
2. BKeratin
3. CMelanin
4. DHaemoglobin

कौन-सा क्षारक RNA में पाया जाता है पर DNA में नहीं?

1. Aयूरेसिल
2. Bऐडेनिन
3. Cथाइमिन
4. Dग्वानिन

What is endocytosis?

1. AMoving water across the membrane by osmosis
2. BSplitting the cytoplasm after the nucleus divides
3. CReleasing material from the cell by fusing vesicles with the membrane
4. DTaking material into the cell by folding the membrane around it

Which statement about Archaea is correct?

1. AThey are a type of virus
2. BThey are prokaryotes, and many live in extreme environments
3. CThey are multicellular plants
4. DThey are eukaryotes that have a nucleus and membrane-bound organelles

Drugs against fungal infections often cause more side effects than drugs against bacteria. Why?

1. AFungi reproduce only by binary fission
2. BFungi have no cell membrane for drugs to act on
3. CFungal cells are eukaryotic, like human cells
4. DFungi are much smaller than bacteria

Why is a buffer system important in blood?

1. AIt resists changes in pH
2. BIt raises the blood glucose level
3. CIt carries oxygen to the tissues
4. DIt makes the blood clot faster

Paper discs with antibiotics X, Y and Z are placed on a plate covered with bacteria. The clear zones around them are 2 mm, 15 mm and 0 mm wide. What is the best conclusion?

1. AZ is most effective, because no bacteria grew under the disc
2. BAll three are equally effective against these bacteria
3. CY is most effective, and the bacteria are resistant to Z
4. DX is most effective, and the bacteria are resistant to Y

The coding part of an mRNA is 900 bases long, including the start codon and the stop codon. How many amino acids are in the protein?

1. A298
2. B299
3. C300
4. D900