Cevaplı Hemşirelik giriş sınavları için biyoloji çalışma kâğıdı

What does the polymerase chain reaction (PCR) do?

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

Tek tek hücreleri görmek için hangi araç kullanılır?

1. AMikroskop
2. BSes için spektrometre
3. CTeleskop
4. DTermometre

What is homeostasis?

1. AChanging a species over many generations
2. BMaking identical copies of a cell
3. CBreaking down food for energy
4. DKeeping a stable internal environment

What happens in the lytic cycle of a virus?

1. AThe host cell makes antibodies against the virus
2. BThe virus divides by binary fission outside the cell
3. CThe viral DNA joins the host DNA and stays inactive for a long time
4. DThe virus makes many copies in the host cell, which then bursts

Which statement about identical and non-identical twins is correct?

1. ABoth kinds of twin always share all of their genes
2. BIdentical twins come from two eggs that are fertilised by a single sperm
3. CIdentical twins come from one zygote; non-identical twins come from two
4. DNon-identical twins come from one zygote that splits in two

How does facilitated diffusion differ from active transport?

1. AIt needs no energy and moves substances down their gradient
2. BIt needs ATP and moves substances against their gradient
3. CIt moves only water and no other substances
4. DIt works without any membrane proteins

Bir bakteri populasyonu bir antibiyotiğe nasıl dirençli hâle gelir?

1. ABirkaç bakteri zaten direnç genleri taşır, ilaca rağmen hayatta kalır ve çoğalır
2. BHastanın bağışıklık sistemi bakterileri dirençli yapar
3. CHer bakteri maruz kaldıktan sonra ilaca direnmeyi öğrenir
4. DAntibiyotik bakterilerin ihtiyaç duyduğu mutasyonu bilerek oluşturur

Redi placed meat in open jars and in jars covered with gauze. Maggots appeared only on meat that flies could reach. What did this show?

1. AMeat turns into maggots when exposed to air
2. BMaggots come from eggs laid by flies, not from the meat itself
3. CGauze produces chemicals that stop meat from rotting
4. DFlies form from rotting meat, and then they lay eggs on fresh meat