उत्तरों सहित नर्सिंग प्रवेश परीक्षाओं के लिए जीव विज्ञान वर्कशीट

What are stomata?

1. ASmall pores in leaves that allow gas exchange
2. BGreen structures in the leaf that store starch
3. CHairs on roots that absorb minerals
4. DTubes that carry water up the stem

Which sex chromosomes does a typical human male have?

1. AX only
2. BXX
3. CYY
4. DXY

What is the main material in the cell walls of fungi?

1. ACollagen
2. BChitin
3. CPeptidoglycan
4. DCellulose

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

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

What do nitrogen-fixing bacteria do?

1. AThey release nitrogen gas from dead organisms into the air
2. BThey turn carbon dioxide into sugar
3. CThey convert nitrogen gas into compounds that plants can use
4. DThey break down proteins into glucose

White blood cells called macrophages engulf and digest bacteria. Which organelle would you expect them to have in large numbers?

1. ACentral vacuoles
2. BLysosomes
3. CSmooth endoplasmic reticulum
4. DChloroplasts

एक जंतु की कोशिका में 20 गुणसूत्र हैं। सामान्य अर्धसूत्री विभाजन के बाद उसके प्रत्येक युग्मक में कितने गुणसूत्र होते हैं?

1. A20
2. B5
3. C40
4. D10

One sample of an enzyme is boiled and then cooled to 37 °C. Another is kept at 4 °C and then warmed to 37 °C. Which sample will work at 37 °C?

1. AOnly the sample that was kept at 4 °C
2. BBoth samples will work equally well
3. CNeither sample will work
4. DOnly the sample that was boiled