Робочий аркуш «Біологія для вступних іспитів на медсестринство» з відповідями

Which protein carries oxygen in red blood cells?

1. AInsulin
2. BCollagen
3. CKeratin
4. DHaemoglobin

What is a model in science?

1. AA single measurement from an experiment
2. BA simplified representation of a real system
3. CAn exact copy that has no limitations
4. DThe control group of a study

What is true of a recessive allele?

1. AIts trait shows whenever one copy is present
2. BIt is found only on the X chromosome
3. CIt is always harmful to the organism
4. DIts trait shows only when two copies are present

Why does ice float on liquid water?

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

In a pedigree, a trait appears in every generation, and every affected child has at least one affected parent. Which inheritance pattern is most likely?

1. AA new mutation in each generation
2. BAutosomal recessive
3. CAutosomal dominant
4. DX-linked recessive

A woman with blood type O has a child with a man of type AB. Which blood types can their children have?

1. AO only
2. BA, B, AB or O
3. CO or AB
4. DA or B

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. BBoth genes show incomplete dominance
3. CA frameshift mutation happened in both genes
4. DThe genes are linked and are rarely separated by crossing over

Under the microscope, homologous chromosomes are moving to opposite poles, and each is still made of two chromatids. Which stage is this?

1. AProphase of mitosis
2. BAnaphase I of meiosis
3. CAnaphase of mitosis
4. DAnaphase II of meiosis