Lembar kerja Biologi untuk ujian masuk keperawatan dengan jawaban

Zat apa yang dihasilkan oleh fotosintesis?

1. AKarbon dioksida dan air
2. BProtein dan nitrogen
3. CAsam laktat dan ATP
4. DGlukosa dan oksigen

Which type of microscope is needed to see a virus?

1. AA magnifying glass
2. BA dissecting microscope
3. CAn electron microscope
4. DA light microscope

What are restriction enzymes?

1. AEnzymes that join amino acids into proteins
2. BEnzymes that digest fats in the intestine
3. CEnzymes that cut DNA at specific base sequences
4. DEnzymes that copy RNA into DNA

Why can an electron microscope show more detail than a light microscope?

1. AElectrons are brighter than light
2. BElectron microscopes use stronger glass lenses
3. CElectrons have a much shorter wavelength than light
4. DElectron microscopes use living cells only

A tall pea plant could be TT or Tt. Which cross will best reveal its genotype?

1. ACross it with a short (tt) plant
2. BCross it with another tall plant
3. CLet it grow for a longer time
4. DCross it with a TT plant

In gel electrophoresis, why does DNA move towards the positive electrode?

1. ADNA is pulled by gravity through the gel
2. BDNA has a positive charge from the nitrogen bases it contains
3. CDNA has a negative charge from its phosphate groups
4. DDNA has no charge and moves at random

A cube-shaped cell has sides of 2 µm. What is its surface area-to-volume ratio?

1. A3 : 1
2. B1 : 3
3. C6 : 1
4. D2 : 1

A leaf with green and white areas is kept in light and then tested with iodine. Only the green areas turn blue-black. What does this show?

1. AChlorophyll is needed for photosynthesis
2. BWhite areas store more starch than green areas
3. CIodine destroys chlorophyll in the leaf
4. DLight is not needed for photosynthesis