Cevaplı Hemşirelik giriş sınavları için biyoloji çalışma kâğıdı

What is a stem cell?

1. AA plant cell found only in the stem
2. BA fully specialised cell that can no longer divide or change its type
3. CAn unspecialised cell that can divide and become other cell types
4. DA cell that carries oxygen in the blood

Hücre kuramına göre yeni hücreler nereden gelir?

1. ABesinlerdeki minerallerden
2. BVücuda giren virüslerden
3. CÖnceden var olan hücrelerden
4. DVücuttaki cansız maddeden

In genetics, what is a carrier?

1. AA person who has a dominant disorder
2. BA person with two recessive alleles who has the disorder
3. CA person who has lost both alleles for the gene, so shows no trait
4. DA person with one recessive allele for a disorder but no symptoms

Bir virüsün temel yapısı nedir?

1. AHücre duvarıyla çevrili bir çekirdek
2. BProtein kılıf içinde genetik materyal
3. CRibozom ve mitokondrili tek bir hücre
4. DDNA ya da RNA içermeyen bir amino asit zinciri

Nerve cells release chemical messengers (neurotransmitters) stored in vesicles. By which process are they released?

1. AEndocytosis
2. BOsmosis
3. CPhagocytosis
4. DExocytosis

Researchers randomly assign patients to receive either a new wound dressing or the standard dressing and compare healing times. What type of study is this?

1. AAn observational study
2. BA case report
3. CA survey
4. DA controlled experiment

A point mutation changes a codon in the middle of a gene into a stop codon. What is the most likely effect?

1. AA protein that is longer than normal
2. BA protein with one different amino acid
3. CA shortened protein that usually does not work
4. DNo change, because stop codons are ignored

Why is one new DNA strand made in short pieces (Okazaki fragments) during replication?

1. ADNA polymerase works only 5' to 3', and the strands are antiparallel
2. BOnly half of the DNA needs to be copied
3. CHelicase cuts that strand into pieces before copying
4. DThe lagging strand is made of RNA instead of DNA, so it must be built in pieces