ใบงาน ชีววิทยาสำหรับข้อสอบเข้าพยาบาล พร้อมเฉลย

Which of these hormones is a steroid?

1. AInsulin
2. BGlucagon
3. CTestosterone
4. DGrowth hormone

What is a mutagen?

1. AAn enzyme that copies DNA
2. BA cell that divides without control
3. CSomething that can cause changes in DNA
4. DA protein that repairs damaged DNA

What is cytokinesis?

1. AThe copying of DNA before division
2. BThe condensing of chromosomes in prophase
3. CThe pairing of homologous chromosomes
4. DThe division of the cytoplasm into two cells

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

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

What does it mean that a person's blood is Rh negative?

1. ATheir plasma has no antibodies at all
2. BTheir red cells carry extra RhD antigen
3. CTheir red cells lack the A and B antigens
4. DTheir red cells lack the RhD antigen

In which part of the chloroplast do the light-dependent reactions happen?

1. AIn the outer membrane
2. BIn the stroma
3. CIn the thylakoid membranes
4. DIn the cell wall

Plants in waterlogged soil take up fewer mineral ions, even when the ions are plentiful. What is the best explanation?

1. ARoot cells lack oxygen, so less ATP is made for active transport
2. BMineral ions only enter by osmosis, and osmosis stops in wet soil
3. CWaterlogged roots carry out more photosynthesis
4. DWater dilutes the ions so much that roots cannot detect them

Why can standard DNA profiling not tell identical twins apart?

1. AIdentical twins have no non-coding DNA
2. BTwins always share the same fingerprints on their hands
3. CIdentical twins come from one zygote and have the same DNA
4. DOnly one twin inherits the father's DNA