Biologia na egzaminy wstępne na pielęgniarstwo: karta pracy z odpowiedziami

What is the active site of an enzyme?

1. AThe part of the cell where the enzyme is made
2. BThe gene that codes for the enzyme
3. CThe product formed by the reaction
4. DThe region where the substrate binds

What is the main role of carbohydrates in the human diet?

1. ATo build muscle tissue
2. BTo provide a quick source of energy
3. CTo form antibodies
4. DTo carry the body's genetic information

What do centrioles do in an animal cell?

1. AThey capture light for photosynthesis
2. BThey help organise the spindle during cell division
3. CThey store the cell's digestive enzymes until they are needed
4. DThey make lipids for the cell membrane

Czym tłuszcze nasycone różnią się od nienasyconych?

1. AŁatwo rozpuszczają się w wodzie
2. BMają wiele wiązań podwójnych i w temperaturze pokojowej są ciekłe
3. CZawierają azot i tworzą białka
4. DNie mają wiązań podwójnych C=C i zwykle są stałe

Which list puts these human energy sources in order from fastest to use to longest-lasting store?

1. AATP, then fat, then glycogen
2. BGlycogen, then ATP, then fat
3. CFat, then glycogen, then ATP
4. DATP, then glycogen, then fat

Which process removes carbon dioxide from the atmosphere?

1. ABurning fossil fuels
2. BCellular respiration
3. CPhotosynthesis
4. DDecomposition

A green plant is kept in a sealed jar in complete darkness for a day. What happens to the carbon dioxide level in the jar?

1. AIt rises, because the plant respires but cannot photosynthesise
2. BIt stays the same, because plants do not respire
3. CIt falls, because the plant keeps photosynthesising
4. DIt falls, because plants take in more CO₂ when they respire in the dark

Potato cylinders are placed in sugar solutions of different strengths. They gain mass in weak solutions, lose mass in strong ones and show no change at 0,3 mol/L. What can be concluded?

1. ASugar enters the cells only by active transport, not by diffusion
2. BPotato cells are always hypertonic to sugar solutions
3. CThe potato cells contain no water at all
4. DThe potato cells have a solute concentration of about 0,3 mol/L