Lembar kerja Biologi untuk ujian masuk keperawatan dengan jawaban

Which sugar is found in DNA?

1. ADeoxyribose
2. BRibose
3. CFructose
4. DGlucose

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

In science, what is an observation?

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

What is the role of cholesterol in animal cell membranes?

1. AIt forms a rigid wall around the cell
2. BIt stores the cell's genetic information
3. CIt carries glucose molecules across the membrane into the cell
4. DIt keeps membrane fluidity stable as temperature changes

Urutan mana yang komplementer dengan untai DNA A-T-G-C-C-A?

1. AA-T-G-C-C-A
2. BG-C-A-T-T-G
3. CU-A-C-G-G-U
4. DT-A-C-G-G-T

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

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

A point mutation changes a codon in the middle of a gene into a stop codon. What is the most likely effect?

1. AA protein with one different amino acid
2. BA shortened protein that usually does not work
3. CA protein that is longer than normal
4. DNo change, because stop codons are ignored

Cystic fibrosis is caused by a faulty CFTR protein, which forms a chloride channel in the cell membrane. Which process is directly affected?

1. ADiffusion of oxygen molecules through the lipid bilayer
2. BCopying of DNA in the nucleus
3. CProduction of ATP in the mitochondria
4. DMovement of chloride ions through a membrane protein