Lembaran kerja Biologi untuk peperiksaan kemasukan kejururawatan dengan jawapan

Seorang organisma mempunyai genotip Bb. Bagaimanakah ia dihuraikan?

1. AHomozigus resesif
2. BHeterozigus
3. CHomozigus dominan
4. DHaploid

What does gel electrophoresis separate?

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

What is endocytosis?

1. ASplitting the cytoplasm after the nucleus divides
2. BReleasing material from the cell by fusing vesicles with the membrane
3. CTaking material into the cell by folding the membrane around it
4. DMoving water across the membrane by osmosis

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 becomes more active than before
4. DIt loses its 3D shape but keeps its amino acid sequence

What happens when a ribosome reaches a stop codon on the mRNA?

1. ATranslation ends and the protein is released
2. BA special amino acid is added to end the chain
3. CThe ribosome goes back to the start codon
4. DThe mRNA is copied back into DNA

Bagaimanakah enzim mempercepat tindak balas kimia?

1. AIa merendahkan tenaga pengaktifan
2. BIa menambah tenaga kepada hasil
3. CIa menaikkan suhu sel
4. DIa dihabiskan sebagai bahan tindak balas

A pre-mRNA is 3000 bases long, and 1200 bases of introns are removed. If all remaining bases code for amino acids, what is the largest number of amino acids in the protein?

1. A600
2. B400
3. C1000
4. D1800

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. APinocytosis of extracellular fluid
2. BReceptor-mediated endocytosis
3. CSimple diffusion
4. DExocytosis