Робочий аркуш «Біологія для вступних іспитів на медсестринство» з відповідями

Which molecules, made by immune cells, bind to specific antigens?

1. AEnzymes
2. BAntibodies
3. CPhospholipids
4. DHormones

A solution has a pH of 3. How is it described?

1. ABasic
2. BAcidic
3. CNeutral
4. DIsotonic

What is the main job of the large central vacuole in a plant cell?

1. AIt stores water and keeps the cell firm
2. BIt captures light energy for photosynthesis
3. CIt assembles proteins from amino acids
4. DIt copies DNA before the cell divides

Чим полегшена дифузія відрізняється від простої дифузії?

1. AВона переміщує лише гази, як-от кисень
2. BВона використовує АТФ для переміщення молекул угору
3. CВона переміщує молекули проти градієнта за допомогою насоса й АТФ
4. DВона використовує канальні або транспортні білки, але не АТФ

There are 64 possible codons but only about 20 amino acids. What does this tell you about the genetic code?

1. AEach codon codes for more than one amino acid at the same time
2. BOnly 20 of the codons are ever used
3. CEach amino acid has exactly three codons
4. DMost amino acids are coded for by more than one codon

When plotting the results of an experiment, which variable usually goes on the y-axis?

1. AThe independent variable
2. BThe controlled variable
3. CThe time the experiment started
4. DThe dependent variable

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 the gene's stop codon
4. DIn a section that is removed after the protein is made

In uncontrolled diabetes, glucose appears in the urine and the person passes large volumes of urine. What is the best explanation?

1. AGlucose is broken down into water in the bladder
2. BInsulin makes the kidneys filter more blood
3. CGlucose makes the kidneys absorb more water
4. DGlucose in the kidney filtrate holds water by osmosis