Cevaplı Hemşirelik giriş sınavları için biyoloji çalışma kâğıdı

What does the polymerase chain reaction (PCR) do?

1. AIt makes many copies of a piece of DNA
2. BIt cuts DNA at specific sequences
3. CIt separates proteins by their charge
4. DIt turns RNA into protein

Where in the cell does glycolysis take place?

1. AIn the chloroplast
2. BIn the mitochondrial matrix
3. CIn the nucleus
4. DIn the cytoplasm

What does it mean that a cell membrane is selectively permeable?

1. AIt lets only water molecules cross
2. BIt lets no substance cross at all
3. CIt lets some substances cross but not others
4. DIt lets every substance cross freely in both directions

"Diploit" ne demektir?

1. AHücrenin çekirdeği yoktur
2. BHücre yalnızca bir kez bölünebilir
3. CHücrede bir kromozom takımı vardır
4. DHücrede iki kromozom takımı vardır

What happens during telophase of mitosis?

1. AThe DNA is copied for the next division
2. BA nuclear envelope forms around each set of chromosomes
3. CThe sister chromatids are pulled apart
4. DThe chromosomes line up across the middle of the cell

Many vitamins act as coenzymes. What does this mean?

1. AThey are digested to release large amounts of energy
2. BThey help enzymes carry out their reactions
3. CThey replace enzymes that have been denatured
4. DThey are built into the cell membrane

A restriction enzyme cuts at three sites in a linear piece of DNA. How many fragments are produced?

1. A6
2. B2
3. C3
4. D4

A karyotype shows three copies of chromosome 21. Which condition does this indicate, and how many chromosomes does the person have?

1. ADown syndrome, with 45 chromosomes
2. BKlinefelter syndrome, with 45 chromosomes
3. CTurner syndrome, with 47 chromosomes
4. DDown syndrome, with 47 chromosomes