Lembar kerja Biologi untuk ujian masuk keperawatan dengan jawaban

What is a monomer?

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

Which gas do plants take in from the air for photosynthesis?

1. ACarbon dioxide
2. BOxygen
3. CHydrogen
4. DNitrogen

Which element is found in all organic molecules?

1. ASulfur
2. BNitrogen
3. CPhosphorus
4. DCarbon

HIV is a retrovirus. What does its enzyme reverse transcriptase do?

1. AIt makes DNA from the virus's RNA
2. BIt makes RNA from the host's DNA
3. CIt makes proteins from the virus's DNA
4. DIt breaks down the host's ribosomes

A seedling is 4 cm tall at week 1, 8 cm at week 2, 12 cm at week 3 and 16 cm at week 4. If the trend continues, how tall will it be at week 6?

1. A20 cm
2. B32 cm
3. C18 cm
4. D24 cm

How does facilitated diffusion differ from active transport?

1. AIt moves only water and no other substances
2. BIt works without any membrane proteins
3. CIt needs no energy and moves substances down their gradient
4. DIt needs ATP and moves substances against their gradient

A student puts a fertilised plant in a sunny window and an unfertilised plant in a dark cupboard. The fertilised plant grows more. What is the main flaw?

1. AThe student used too much fertiliser on the plant in the window
2. BThe dependent variable was not measured
3. CTwo variables were changed, so the cause is unclear
4. DThere was no hypothesis to test

A plant is kept in the dark to use up its starch. One leaf is then sealed in a bag with a chemical that absorbs CO₂, and the plant is placed in light. Later, that leaf has no starch, but the other leaves do. What does this show?

1. ACarbon dioxide is needed for photosynthesis
2. BChlorophyll is needed for photosynthesis
3. CLight is needed for photosynthesis
4. DOxygen is needed for photosynthesis