उत्तरों सहित नर्सिंग प्रवेश परीक्षाओं के लिए जीव विज्ञान वर्कशीट

Which definition of a species is most often used for animals?

1. AAll the animals that eat the same food
2. BAll of the different organisms that live together in one area
3. CAny organisms that look alike
4. DA group that can interbreed and have fertile offspring

What is the main role of the cytoskeleton?

1. AIt controls which substances enter the cell
2. BIt joins amino acids into proteins
3. CIt stores the genetic code of the cell
4. DIt gives the cell its shape and helps it move

What is a heterotroph?

1. AAn organism that lives only in water
2. BAn organism with no cells
3. CAn organism that gets its food from other organisms
4. DAn organism that makes its own food by photosynthesis

After gel electrophoresis, which DNA fragments are found furthest from the wells?

1. AThe fragments with the most guanine
2. BThe fragments with the most adenine
3. CThe largest fragments
4. DThe smallest fragments

What is the main role of inflammation after an injury?

1. ATo destroy the healthy cells around the wound
2. BTo make antibodies inside the damaged cells
3. CTo bring more blood and white blood cells to the area
4. DTo stop all blood flow to the area so that bleeding ends

A patient's blood type is B positive. What does this mean?

1. ATheir red cells carry the A antigen and no RhD antigen
2. BTheir red cells carry the B antigen and the RhD antigen
3. CTheir plasma contains anti-B antibodies
4. DTheir red cells carry no antigens at all

After a long course of broad-spectrum antibiotics, a patient develops severe diarrhoea caused by Clostridioides difficile. What is the most likely reason?

1. AC. difficile was made by the patient's own immune system
2. BThe antibiotics changed some of the harmless gut bacteria into C. difficile
3. CThe antibiotics made the gut lining produce spores
4. DThe antibiotics killed normal gut bacteria that kept C. difficile in check

Why are mutations in mitochondrial DNA passed on only from mothers to their children?

1. ASperm cells contain no DNA at all
2. BThe zygote's mitochondria come from the egg
3. CMitochondrial DNA is on the X chromosome
4. DOnly women have mitochondria in their cells