Cevaplı Hemşirelik giriş sınavları için biyoloji çalışma kâğıdı

Bir DNA molekülünün şekli nedir?

1. ATek düz iplik
2. BDüz bir halka
3. CÜçlü sarmal
4. DÇift sarmal

What are cilia?

1. ASmall round sacs that hold digestive enzymes
2. BFolds of the inner mitochondrial membrane that make ATP
3. COpenings in the nuclear envelope
4. DShort hair-like projections that beat in waves

What is a stem cell?

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

What is a random sample?

1. AA group chosen by the researcher because they are easy to reach and willing
2. BA group made only of people who volunteer to take part
3. CA group where everyone in the population has an equal chance of being chosen
4. DA group chosen because they are likely to support the hypothesis

Why do many plants close their stomata on hot, dry days?

1. ATo take in more carbon dioxide
2. BTo reduce water loss
3. CTo release more oxygen
4. DTo speed up photosynthesis

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

1. ALysosomes
2. BChloroplasts
3. CCentral vacuoles
4. DSmooth endoplasmic reticulum

Bir bakteri populasyonu bir antibiyotiğe nasıl dirençli hâle gelir?

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

How does a phospholipid differ from a triglyceride?

1. AIt is made of amino acids
2. BIt has four fatty acids instead of three
3. COne of the fatty acids is replaced by a phosphate group
4. DIt contains no glycerol, only fatty acids and phosphate