Lembar kerja Biologi untuk ujian masuk keperawatan dengan jawaban

What is the R group of an amino acid?

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

What is the aim of gene therapy?

1. ATo treat a disease by adding a working copy of a faulty gene
2. BTo give a patient antibiotics through a vein to kill a virus
3. CTo remove all the genes from a patient's cells
4. DTo change the patient's blood type

What is the main job of the large central vacuole in a plant cell?

1. AIt copies DNA before the cell divides
2. BIt captures light energy for photosynthesis
3. CIt stores water and keeps the cell firm
4. DIt assembles proteins from amino acids

Why does PCR use a DNA polymerase taken from bacteria that live in hot springs?

1. AIt works only in the dark, like the bacteria it comes from
2. BIt makes the DNA strands stick together
3. CIt copies RNA as well as DNA
4. DIt survives the high temperatures used to separate the strands

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. AMuscle cells have extra DNA from mitochondria
2. BEach cell type has a different set of chromosomes
3. CDifferent genes are switched on in each type of cell
4. DNerve cells have lost the genes for muscle proteins

Human adult height varies across a smooth, continuous range rather than falling into a few separate groups. What is the best explanation?

1. AIt is controlled only by the environment
2. BIt is controlled by many genes and also affected by environment
3. CIt is an X-linked recessive trait
4. DIt is controlled by one gene with two alleles and full dominance

Sucrose is broken down into glucose and fructose during digestion. What type of reaction is this?

1. AHydrolysis, which releases a water molecule
2. BHydrolysis, which uses a water molecule
3. CDehydration synthesis, which releases a water molecule
4. DDehydration synthesis, which uses a water molecule

Manakah berikut ini yang merupakan hipotesis yang dapat diuji?

1. ATanaman merasa lebih bahagia dan tenang bila diajak bicara setiap hari
2. BJika tanaman mendapat lebih banyak cahaya, tanaman akan tumbuh lebih tinggi
3. CTanaman seharusnya disiram oleh orang-orang yang peduli
4. DTanaman adalah makhluk hidup yang paling indah