Lembar kerja Biologi untuk ujian masuk keperawatan dengan jawaban

What is a genetically modified organism (GMO)?

1. AAn organism that has caught a virus
2. BAn organism produced by normal sexual reproduction between two parents
3. CAn organism that has been grown in a greenhouse
4. DAn organism whose DNA has been changed by genetic engineering

What is an organism's genotype?

1. AThe traits that can be seen or measured
2. BThe environment in which it lives
3. CThe alleles it carries for a trait
4. DThe number of cells in its body

Basa mana yang ada pada RNA tetapi tidak pada DNA?

1. ATimin
2. BUrasil
3. CGuanin
4. DAdenin

Why do many plants close their stomata on hot, dry days?

1. ATo release more oxygen
2. BTo reduce water loss
3. CTo speed up photosynthesis
4. DTo take in more carbon dioxide

Pada fase mitosis mana kromosom berbaris di bagian tengah sel?

1. AMetafase
2. BAnafase
3. CTelofase
4. DProfase

What happens in the lytic cycle of a virus?

1. AThe viral DNA joins the host DNA and stays inactive for a long time
2. BThe host cell makes antibodies against the virus
3. CThe virus divides by binary fission outside the cell
4. DThe virus makes many copies in the host cell, which then bursts

Two genes lie very close together on the same chromosome. In a test cross, most offspring look like the parents instead of the expected 1:1:1:1 ratio. Why?

1. AThe genes are linked and are rarely separated by crossing over
2. BThe genes are on different chromosomes and assort independently
3. CBoth genes show incomplete dominance
4. DA frameshift mutation happened in both genes

Bacteria in a closed flask grow quickly at first, but the population then stops increasing. What is the main reason?

1. ANutrients run out and waste products build up
2. BThe bacteria change into viruses after many divisions
3. CThe flask becomes too cold for growth
4. DThe bacteria stop dividing once they reach adult size