Lembaran kerja Biologi untuk peperiksaan kemasukan kejururawatan dengan jawapan

What is an antigen?

1. AA white blood cell that engulfs and digests bacteria
2. BA protein that carries oxygen
3. CA molecule that the immune system sees as foreign
4. DA drug that kills viruses

Apakah bentuk molekul DNA?

1. AGelang rata
2. BSatu untai lurus
3. CHeliks tiga
4. DHeliks berganda

What is the pH of pure water at 25 °C?

1. A0
2. B7
3. C14
4. D1

Bagaimanakah teori saintifik berbeza daripada hipotesis?

1. AIa penjelasan luas yang disokong oleh banyak bukti yang telah diuji
2. BTeori ialah tekaan yang belum diuji
3. CTeori tidak boleh diubah oleh data baharu
4. DTeori ialah keputusan satu eksperimen

Why does each type of virus infect only certain kinds of cells?

1. AIt must find cells with the same DNA as its own
2. BIt can only enter cells that are dividing by meiosis at that time
3. CIt must attach to specific receptor proteins on the cell surface
4. DIt can only enter cells that have no nucleus

To insert a human gene into a bacterial plasmid, scientists cut both the gene and the plasmid with the same restriction enzyme. Why?

1. ASo both pieces become exactly the same length
2. BSo the cut ends match and can join together
3. CSo the gene is turned into RNA
4. DSo the plasmid loses all its genes

Liver cells take in cholesterol-carrying LDL particles only after the particles bind to specific proteins on the cell surface. Which process is this?

1. AExocytosis
2. BSimple diffusion
3. CReceptor-mediated endocytosis
4. DPinocytosis of extracellular fluid

Hemofilia ialah resesif terangkai-X. Seorang ibu pembawa (XᴴXʰ) dan bapa yang tidak terjejas (XᴴY) mempunyai seorang anak lelaki. Apakah kebarangkalian dia menghidap hemofilia?

1. A1
2. B1/4
3. C0
4. D1/2