Lembar kerja Biologi untuk ujian masuk keperawatan dengan jawaban

How does a vaccine protect a person?

1. AIt blocks the pathogen from entering the nose
2. BIt trains the immune system with a harmless form of a pathogen
3. CIt replaces the person's white blood cells with stronger ones
4. DIt kills all bacteria in the body straight away

What does phloem carry in a plant?

1. AChlorophyll to the stem
2. BCarbon dioxide from the air
3. CSugars made in the leaves
4. DWater from the roots only

What is a haploid cell?

1. AA cell with an extra chromosome
2. BA cell with no nucleus
3. CA cell with one set of chromosomes
4. DA cell with two sets of chromosomes

Which is an example of negative feedback?

1. AContractions growing stronger during labour
2. BA wound becoming more inflamed over time
3. CBlood clotting speeding up once it starts
4. DSweating when body temperature rises

Why can small nonpolar molecules cross the cell membrane easily while ions cannot?

1. AThe bilayer's core is made of hydrophobic tails
2. BIons are larger than most membrane proteins
3. CThe membrane carries a strong positive charge
4. DThe membrane is made mostly of long carbohydrate chains

Sebuah sel darah merah ditempatkan dalam larutan yang sangat asin (hipertonik). Apa yang terjadi?

1. ATidak ada perubahan karena garam tidak dapat menembus
2. BGaram masuk ke sel dan sel membengkak
3. CAir keluar dari sel dan sel mengkerut
4. DAir masuk ke sel dan sel pecah

Parts of a protein chain coil into alpha helices and fold into beta sheets, held by hydrogen bonds. Which level of protein structure is this?

1. AQuaternary structure
2. BSecondary structure
3. CPrimary structure
4. DTertiary structure

In an onion root tip, 90 of 100 cells are in interphase and 10 are in mitosis. If the whole cell cycle takes 20 hours, about how long does mitosis last?

1. A2 hours
2. B0,5 hours
3. C10 hours
4. D18 hours