ورقة عمل الأحياء لامتحانات القبول في التمريض مع الإجابات

What is phagocytosis?

1. AA cell releasing hormones by exocytosis
2. BA cell taking in small droplets of fluid
3. CA cell dividing into two identical daughter cells
4. DA cell engulfing large particles such as bacteria

Which kind of organism causes malaria?

1. AA protist carried by mosquitoes
2. BA bacterium carried in water
3. CA fungus that grows on skin
4. DA virus spread by coughing

What does xylem carry in a plant?

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

Why does ice float on liquid water?

1. AIce molecules are lighter than liquid water molecules
2. BHydrogen bonds hold ice in an open, less dense structure
3. CIce is denser than liquid water
4. DIce contains more air than liquid water

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

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

By which process does oxygen enter a cell and carbon dioxide leave it?

1. AEndocytosis in small vesicles
2. BFacilitated diffusion through glucose carriers
3. CSimple diffusion through the lipid bilayer
4. DActive transport by membrane pumps

Two genes lie very close together on the same chromosome. In a test cross, most offspring look like the parents instead of the expected 1:1:1:1 ratio. Why?

1. AThe genes are on different chromosomes and assort independently
2. BThe genes are linked and are rarely separated by crossing over
3. CBoth genes show incomplete dominance
4. DA frameshift mutation happened in both genes

In a trial, 20% of patients improve on a new drug and 18% improve on a placebo. What is the best conclusion?

1. AThe drug works well, because 20% of patients improved
2. BThe drug is ten times better than the placebo
3. CThe drug adds little benefit beyond the placebo
4. DThe placebo was harmful to the patients