Cevaplı Hemşirelik giriş sınavları için biyoloji çalışma kâğıdı

Which element is found in all organic molecules?

1. ANitrogen
2. BPhosphorus
3. CCarbon
4. DSulfur

What does xylem carry in a plant?

1. AOxygen from the leaves to the roots
2. BWater and minerals from the roots upward
3. CSeeds from the flowers to the soil
4. DSugars from the leaves to the roots

What is a pathogen?

1. AA medicine that kills bacteria
2. BA harmless microbe living on the skin
3. CA cell of the immune system that fights infection
4. DA microorganism or agent that causes disease

Why do plants wilt when the soil around their roots becomes very salty?

1. ASalt blocks sunlight from reaching the leaves
2. BSalt makes the root cells swell and burst
3. CThe roots take in too much water
4. DWater leaves the root cells by osmosis

Which kind of mutation can be passed on to a person's children?

1. AA mutation in a white blood cell during infection
2. BA mutation in a liver cell caused by alcohol
3. CA mutation in a skin cell caused by sunlight
4. DA mutation in a cell that forms eggs or sperm

Bakteriler genellikle nasıl çoğalır?

1. ATohum oluşturarak
2. BVirüs tomurcuklandırarak
3. Cİkiye bölünmeyle
4. DMayozla

An old idea says giraffes got long necks because each one stretched to reach leaves and passed the longer neck to its young. Why is this idea rejected?

1. AGiraffes do not eat leaves from tall trees, so stretching is not needed
2. BOnly plants can pass on traits to offspring
3. CChanges acquired in a lifetime are not passed on in the genes
4. DNeck length is not affected by any genes

Bacteria from hot springs have enzymes that work best at about 80 °C, while most human enzymes work best near 37 °C. What is the best explanation?

1. ATheir enzymes have structures that stay stable at high temperatures
2. BHigh temperature never affects any enzyme
3. CTheir enzymes are made of lipids, not proteins
4. DTheir enzymes do not have an active site, so heat cannot affect them