ใบงาน ชีววิทยาสำหรับข้อสอบเข้าพยาบาล พร้อมเฉลย

What is a eukaryote?

1. AAn organism made of a single cell without a nucleus
2. BAn organism that lives only in extreme heat
3. CAn organism whose cells have a nucleus
4. DA virus that infects animal cells

What is a karyotype?

1. AA list of all the proteins that a cell makes during its life
2. BA picture of a cell's chromosomes arranged in pairs by size
3. CA map of the organelles inside a cell
4. DA diagram of a family's inheritance pattern

What is a model in science?

1. AAn exact copy that has no limitations
2. BA simplified representation of a real system
3. CThe control group of a study
4. DA single measurement from an experiment

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

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

Why is a buffer system important in blood?

1. AIt raises the blood glucose level
2. BIt makes the blood clot faster
3. CIt carries oxygen to the tissues
4. DIt resists changes in pH

Which element is found in all amino acids but not in carbohydrates?

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

A single-celled organism has a nucleus, no cell wall and swims using cilia. In which group is it best placed?

1. AProtists
2. BBacteria
3. CFungi
4. DPlants

A mutation changes one amino acid in an enzyme. In which location is the change most likely to stop the enzyme from working?

1. AOn the outer surface, far from the active site
2. BIn the active site
3. CIn a section that is removed after the protein is made
4. DIn the gene's stop codon