Lembar kerja Biologi untuk ujian masuk keperawatan dengan jawaban

What is the job of messenger RNA (mRNA)?

1. AIt forms the main structure of the ribosome
2. BIt carries amino acids to the ribosomes
3. CIt stores genetic information in the nucleus permanently
4. DIt carries the genetic code from DNA to the ribosomes

What is a chromosome?

1. AA strand of RNA that leaves the nucleus
2. BA single gene that codes for one protein
3. CA small organelle in the cytoplasm that makes ATP for the cell
4. DA long DNA molecule, packed with proteins, carrying many genes

Which of these hormones is a steroid?

1. ATestosterone
2. BInsulin
3. CGrowth hormone
4. DGlucagon

Tanaman bergenotipe Aa disilangkan dengan tanaman aa. Berapa bagian keturunan yang diharapkan menunjukkan sifat resesif?

1. A3/4
2. BTidak ada
3. C1/4
4. D1/2

Many vitamins act as coenzymes. What does this mean?

1. AThey help enzymes carry out their reactions
2. BThey are digested to release large amounts of energy
3. CThey are built into the cell membrane
4. DThey replace enzymes that have been denatured

Nearly all cells in a person's body contain the same DNA. Why do nerve cells and muscle cells look and work so differently?

1. AEach cell type has a different set of chromosomes
2. BNerve cells have lost the genes for muscle proteins
3. CMuscle cells have extra DNA from mitochondria
4. DDifferent genes are switched on in each type of cell

Sebuah kodon mRNA berbunyi AUG. Apa antikodon pada tRNA yang sesuai?

1. AAUG
2. BGUA
3. CUAC
4. DTAC

The field of view of a microscope is 0,5 mm wide. About 10 cells fit across it in a line. What is the approximate width of one cell?

1. A5 µm
2. B0,5 µm
3. C50 µm
4. D500 µm