Lembar kerja Biologi untuk ujian masuk keperawatan dengan jawaban

What is a chromosomal deletion?

1. AThe loss of a piece of a chromosome
2. BThe swap of a single DNA base
3. CAn extra copy of a whole chromosome
4. DA piece of chromosome that is turned around

Struktur mana yang ada di sel tumbuhan tetapi tidak di sel hewan?

1. AMitokondria
2. BRibosom
3. CMembran sel
4. DDinding sel

What is a monomer?

1. AAn enzyme that breaks down polymers
2. BA very large molecule that is made of many smaller units
3. CA molecule that contains no carbon
4. DA small unit that joins with others to form a polymer

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

A cell has a nucleus and mitochondria but no cell wall and no chloroplasts. What kind of cell is it most likely to be?

1. AA fungal cell
2. BAn animal cell
3. CA bacterial cell
4. DA plant cell

Red-green colour blindness is X-linked recessive. A colour-blind woman (XᵇXᵇ) has children with a man with normal colour vision (XᴮY). What fraction of their sons is expected to be colour-blind?

1. AOne half
2. BNone
3. CAll
4. DOne quarter

Bacteria from hot springs have enzymes that work best at about 80 °C, while most human enzymes work best near 37 °C. What is the best explanation?

1. ATheir enzymes are made of lipids, not proteins
2. BTheir enzymes have structures that stay stable at high temperatures
3. CHigh temperature never affects any enzyme
4. DTheir enzymes do not have an active site, so heat cannot affect them

Dua tanaman kapri yang keduanya AaBb disilangkan. Gen-gennya berada pada kromosom yang berbeda. Berapa bagian keturunan yang diharapkan menunjukkan kedua sifat resesif (aabb)?

1. A1/16
2. B9/16
3. C3/16
4. D1/4