解答つき看護学校入学試験のための生物ワークシート

Which of these hormones is a steroid?

1. AGrowth hormone
2. BTestosterone
3. CInsulin
4. DGlucagon

How many strands does an RNA molecule usually have?

1. AOne
2. BTwo
3. CFour
4. DThree

What does gel electrophoresis separate?

1. ACells by their shape
2. BDNA fragments by size
3. CChromosomes by their colour
4. DBlood into plasma and cells

Why do the palisade cells near the top surface of a leaf contain many chloroplasts?

1. AThey get the most light and do most of the photosynthesis
2. BThey carry sugars from the leaves down to the roots
3. CThey protect the leaf from insects and strong winds
4. DThey store most of the plant's water for dry periods

How does facilitated diffusion differ from active transport?

1. AIt moves only water and no other substances
2. BIt works without any membrane proteins
3. CIt needs no energy and moves substances down their gradient
4. DIt needs ATP and moves substances against their gradient

赤緑色覚異常が女性より男性に多いのはなぜか。

1. A男性はX染色体が 1 本なので、対立遺伝子が 1 つあれば十分だから
2. Bその対立遺伝子はY染色体上にあるから
3. C女性は父親からその対立遺伝子を受け継げないから
4. Dその対立遺伝子は男性では優性、女性では劣性だから

Kidney tubule cells move glucose from the filtrate back into the blood, even when there is less glucose in the filtrate than in the cells. What does this show?

1. AGlucose is moved by simple diffusion
2. BGlucose is moved by osmosis
3. CGlucose is moved by active transport
4. DGlucose moves only down its gradient

Parts of a protein chain coil into alpha helices and fold into beta sheets, held by hydrogen bonds. Which level of protein structure is this?

1. AQuaternary structure
2. BSecondary structure
3. CPrimary structure
4. DTertiary structure