ورقة عمل الأحياء لامتحانات القبول في التمريض مع الإجابات

What is a pedigree in genetics?

1. AA chart that shows how a trait is inherited in a family
2. BA list of all the genes in an organism
3. CA table of codons and amino acids
4. DA picture of a person's chromosomes arranged in pairs by size

What is an ecosystem?

1. AThe living things in an area and their non-living surroundings
2. BAll the members of one species in an area
3. CThe weather in a particular region
4. DA single organism together with all of its organs and tissues

What is a mutagen?

1. AAn enzyme that copies DNA
2. BA protein that repairs damaged DNA
3. CA cell that divides without control
4. DSomething that can cause changes in DNA

The results of an experiment do not support the hypothesis. What should the scientist do next?

1. AStop doing any further research on the question
2. BReport that the hypothesis was proven correct
3. CChange the data so they fit the hypothesis
4. DRevise the hypothesis and test it again

A tablet contains 2,5 g of a substance. How many milligrams is this?

1. A25 mg
2. B0,0025 mg
3. C2500 mg
4. D250 mg

What does Mendel's law of segregation state?

1. ADominant alleles are more common in a population than recessive ones
2. BGenes on different chromosomes are always inherited together
3. CEach gamete receives both alleles of every gene
4. DThe two alleles of a gene separate so each gamete gets only one

Why does cooking oil not mix with water?

1. AOil is denser than water and sinks
2. BWater molecules are nonpolar and avoid each other
3. COil molecules are nonpolar and cannot form hydrogen bonds with water
4. DOil molecules are polar and repel the charged ends of water molecules

A solution contains 5 mg of a substance in every millilitre. How many milligrams are in 0,02 L of the solution?

1. A100 mg
2. B10 mg
3. C1000 mg
4. D0,1 mg