정답이 있는 간호학 입학 시험 대비 생물학 학습지

What does homozygous mean?

1. AHaving only one copy of a gene
2. BHaving an extra chromosome
3. CHaving two different alleles for a gene
4. DHaving two identical alleles for a gene

What is a monomer?

1. AA small unit that joins with others to form a polymer
2. BA very large molecule that is made of many smaller units
3. CA molecule that contains no carbon
4. DAn enzyme that breaks down polymers

삼투는 선택적 투과성 막을 통한 어떤 물질의 확산인가요?

1. A포도당
2. B나트륨 이온
3. C단백질
4. D물

What happens to a protein when it is denatured?

1. AIt loses some of its amino acids but keeps its folded shape
2. BIt turns into a carbohydrate
3. CIt loses its 3D shape but keeps its amino acid sequence
4. DIt becomes more active than before

A deletion removes exactly three bases, forming one whole codon, from the middle of a gene. What is the most likely result?

1. ANo protein can be made at all
2. BThe protein lacks one amino acid but the rest is unchanged
3. CThe protein becomes three times longer
4. DEvery amino acid after the deletion is changed to a new one

세균은 보통 어떻게 번식하나요?

1. A씨앗을 만들어서
2. B바이러스를 출아시켜서
3. C감수 분열로
4. D이분법으로

A man with an X-linked recessive disorder (XʰY) has children with a woman who has two normal alleles (XᴴXᴴ). What is expected among their children?

1. AHalf of the sons and half of the daughters are affected
2. BAll sons are affected, and no daughters are carriers
3. CAll daughters are affected, and all sons are carriers
4. DAll daughters are carriers, and no sons are affected

Griffith injected mice with heat-killed harmful bacteria mixed with live harmless bacteria. The mice died, and live harmful bacteria were found in them. What did this show?

1. AHeat makes harmless bacteria become harmful when they are injected
2. BA substance from the dead bacteria changed the harmless ones
3. CThe mice were killed by the dead bacteria alone
4. DBacteria can be killed by the immune system of mice