Lembar kerja Biologi untuk ujian masuk keperawatan dengan jawaban

What is the R group of an amino acid?

1. AThe amino group that is shared by all amino acids
2. BThe peptide bond between two amino acids
3. CThe carboxyl group at one end
4. DThe side chain that differs between amino acids

What is a sister chromatid?

1. AA chromosome that is inherited from the mother only, never the father
2. BOne of the two sex chromosomes
3. COne of two identical copies of a chromosome joined at the centromere
4. DA small ring of DNA found in bacteria

What is a bacteriophage?

1. AA bacterium that infects viruses
2. BA fungus that kills bacteria
3. CA virus that infects bacteria
4. DA white cell that eats bacteria

Which stage of aerobic respiration produces the most ATP?

1. AFermentation
2. BThe electron transport chain
3. CThe Krebs cycle in the matrix
4. DGlycolysis in the cytoplasm

A tablet contains 2,5 g of a substance. How many milligrams is this?

1. A250 mg
2. B0,0025 mg
3. C2500 mg
4. D25 mg

Why can small nonpolar molecules cross the cell membrane easily while ions cannot?

1. AThe membrane is made mostly of long carbohydrate chains
2. BIons are larger than most membrane proteins
3. CThe membrane carries a strong positive charge
4. DThe bilayer's core is made of hydrophobic tails

A drug lowered blood pressure in a study of 20 men aged 40 to 50. Why might the result not apply to women over 70?

1. AThe study had a dependent variable
2. BThe sample did not represent that group
3. CBlood pressure cannot be measured in older women
4. DThe results were too precise to be trusted

Satu basa tambahan disisipkan di dekat awal sebuah gen. Mengapa hal ini biasanya berdampak besar pada protein?

1. AHanya mengubah satu asam amino dalam protein
2. BTidak berdampak karena kodenya redundan
3. CMengubah gen itu menjadi kromosom yang berbeda
4. DMenggeser kerangka baca semua kodon berikutnya