护理入学考试生物练习卷（附答案）

Which group of biomolecules forms the basic bilayer of the cell membrane and also stores long-term energy?

1. AProteins
2. BNucleic acids
3. CCarbohydrates
4. DLipids

What does ATP stand for?

1. AAdenosine triphosphate
2. BAmino triphosphate
3. CAdenine tetraphosphate
4. DAdenosine diphosphate

What is a sister chromatid?

1. AOne of the two sex chromosomes
2. BOne of two identical copies of a chromosome joined at the centromere
3. CA chromosome that is inherited from the mother only, never the father
4. DA small ring of DNA found in bacteria

What happens to an enzyme after it has catalysed a reaction?

1. AIt is broken down into amino acids
2. BIt changes into the substrate
3. CIt is released unchanged and can be used again
4. DIt becomes part of the product and leaves with it

在有丝分裂的哪个时期，染色体排列在细胞中部？

1. A后期
2. B末期
3. C前期
4. D中期

What happens during telophase of mitosis?

1. AThe sister chromatids are pulled apart
2. BThe chromosomes line up across the middle of the cell
3. CA nuclear envelope forms around each set of chromosomes
4. DThe DNA is copied for the next division

A child's DNA profile has bands A, B, C and D. The mother has bands A and C. Man 1 has bands B and D, man 2 has A and E, and man 3 has C and F. Which man could be the biological father?

1. AMan 2
2. BNone of them
3. CMan 3
4. DMan 1

In Tay-Sachs disease, a lysosomal enzyme does not work. What happens inside the affected nerve cells?

1. AThe cells can no longer make ATP in their mitochondria
2. BThe undigested substance builds up inside lysosomes
3. CThe DNA cannot be copied before division
4. DThe ribosomes stop making proteins