解答つき看護学校入学試験のための生物ワークシート

How many strands does an RNA molecule usually have?

1. AOne
2. BFour
3. CThree
4. DTwo

優性対立遺伝子について正しいものはどれか。

1. A表現型には決して現れない
2. B常に母親から受け継がれる
3. C2 コピーあるときにだけ、その効果が現れる
4. D1 コピーしかなくても、その効果が現れる

In genetics, what is a carrier?

1. AA person with two recessive alleles who has the disorder
2. BA person who has a dominant disorder
3. CA person with one recessive allele for a disorder but no symptoms
4. DA person who has lost both alleles for the gene, so shows no trait

What does the enzyme lipase break down?

1. ADNA into nucleotides
2. BProteins into amino acids and peptides
3. CStarch into sugars
4. DFats into fatty acids and glycerol

Why do root hair cells have long, thin extensions?

1. ATo increase the surface area for absorbing water
2. BTo carry out photosynthesis underground
3. CTo anchor the plant firmly against strong winds and rain
4. DTo store starch for the winter

A greenhouse is warm and brightly lit, but the air has very little carbon dioxide. What is most likely limiting the rate of photosynthesis?

1. AThe number of stomata
2. BThe light intensity in the greenhouse
3. CThe carbon dioxide concentration
4. DThe temperature

Redi placed meat in open jars and in jars covered with gauze. Maggots appeared only on meat that flies could reach. What did this show?

1. AGauze produces chemicals that stop meat from rotting
2. BMeat turns into maggots when exposed to air
3. CMaggots come from eggs laid by flies, not from the meat itself
4. DFlies form from rotting meat, and then they lay eggs on fresh meat

A man has Klinefelter syndrome (XXY). Which error most likely produced it?

1. AA frameshift mutation in one of the genes on the father's Y chromosome
2. BExtra mitosis in the zygote after fertilisation
3. CNondisjunction of the sex chromosomes during meiosis in a parent
4. DCrossing over between chromosome 21 and the X chromosome