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

What are the parts of a triglyceride (a fat molecule)?

1. AOne glycerol and three fatty acids
2. BThree glucose units and one phosphate
3. CTwo glycerols and one fatty acid
4. DOne amino acid and three fatty acids

Які будівельні блоки (мономери) білків?

1. AАмінокислоти
2. BНуклеотиди
3. CМоносахариди
4. DЖирні кислоти

What does xylem carry in a plant?

1. ASeeds from the flowers to the soil
2. BOxygen from the leaves to the roots
3. CWater and minerals from the roots upward
4. DSugars from the leaves to the roots

Researchers randomly assign patients to receive either a new wound dressing or the standard dressing and compare healing times. What type of study is this?

1. AA survey
2. BA case report
3. CAn observational study
4. DA controlled experiment

Why is a buffer system important in blood?

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

Many vitamins act as coenzymes. What does this mean?

1. AThey help enzymes carry out their reactions
2. BThey are digested to release large amounts of energy
3. CThey are built into the cell membrane
4. DThey replace enzymes that have been denatured

A pre-mRNA is 3000 bases long, and 1200 bases of introns are removed. If all remaining bases code for amino acids, what is the largest number of amino acids in the protein?

1. A600
2. B1000
3. C1800
4. D400

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