Lembar kerja Biologi untuk ujian masuk keperawatan dengan jawaban

Which definition of a species is most often used for animals?

1. AA group that can interbreed and have fertile offspring
2. BAll of the different organisms that live together in one area
3. CAll the animals that eat the same food
4. DAny organisms that look alike

Which molecules, made by immune cells, bind to specific antigens?

1. AEnzymes
2. BHormones
3. CPhospholipids
4. DAntibodies

Dalam suatu percobaan, apa itu variabel bebas?

1. AFaktor yang sengaja diubah oleh peneliti
2. BFaktor yang diukur sebagai hasil
3. CKelompok yang tidak menerima perlakuan
4. DFaktor yang dijaga sama pada setiap kelompok

The genetic code is described as nearly universal. What does this mean?

1. AEvery cell in the body makes the same proteins
2. BAll organisms have the same number of chromosomes in their cells
3. CThe same codons mean the same amino acids in nearly all organisms
4. DAll organisms have exactly the same genes

What do nitrogen-fixing bacteria do?

1. AThey convert nitrogen gas into compounds that plants can use
2. BThey turn carbon dioxide into sugar
3. CThey break down proteins into glucose
4. DThey release nitrogen gas from dead organisms into the air

Why does PCR use a DNA polymerase taken from bacteria that live in hot springs?

1. AIt copies RNA as well as DNA
2. BIt works only in the dark, like the bacteria it comes from
3. CIt survives the high temperatures used to separate the strands
4. DIt makes the DNA strands stick together

The wings of a bat and the wings of a butterfly are used for flying but have very different structures. What are they called, and what does this show?

1. AHomologous structures, which were inherited from a shared ancestor
2. BVestigial structures, which no longer have a function
3. CAnalogous structures, which evolved separately for the same job
4. DHomologous structures, which have the same bones inside

Untuk mengetahui seberapa banyak orang dewasa di sebuah kota berolahraga, seorang peneliti hanya mensurvei orang yang keluar dari pusat kebugaran. Apa masalah utamanya?

1. ASampelnya bias ke arah orang yang aktif
2. BSampelnya terlalu acak untuk berguna
3. CSurvei tidak pernah dapat dipakai dalam sains
4. DPeneliti tidak memiliki variabel terikat