Lembar kerja Biologi untuk ujian masuk keperawatan dengan jawaban

In science, what is an observation?

1. AA guess about why something happens
2. BA conclusion drawn before any data are collected
3. CInformation gathered with the senses or instruments
4. DA rule that explains all known facts

Which bonds hold the two strands of a DNA double helix together?

1. AHydrogen bonds between the bases
2. BPeptide bonds between the sugars
3. CIonic bonds between the phosphates
4. DDisulfide bonds between the bases

Which organelle breaks down fatty acids and hydrogen peroxide?

1. AChloroplast
2. BCentriole
3. CRibosome
4. DPeroxisome

What is an inversion mutation?

1. AA whole extra chromosome is added to the cell
2. BA segment of a chromosome is lost completely
3. CA chromosome segment breaks off and is reattached the wrong way round
4. DA segment of a chromosome moves to a different, non-matching chromosome

In disease spread, what is a vector?

1. AThe first person to catch a disease
2. BA medicine that destroys a pathogen in the body
3. CAn organism that carries a pathogen between hosts
4. DA blood test used to detect antibodies

During childbirth, pressure on the cervix causes oxytocin release, which causes stronger contractions and more pressure. What kind of control is this?

1. APositive feedback
2. BHomeostatic balance
3. CNegative feedback
4. DNatural selection

A plant cell is placed in a strong salt solution. Its membrane and cytoplasm pull away from the cell wall. What is this called?

1. ATurgor
2. BLysis
3. CCrenation
4. DPlasmolysis

Sebuah sampel DNA mengandung 30% adenin. Berapa persen basanya yang berupa guanin?

1. A20%
2. B70%
3. C30%
4. D40%