Biologia na egzaminy wstępne na pielęgniarstwo: karta pracy z odpowiedziami

In an enzyme reaction, what is the substrate?

1. AThe gene that codes for the enzyme
2. BThe substance that the enzyme acts on
3. CThe part of the enzyme that changes shape
4. DThe product released at the end

Co powstaje w wyniku mitozy?

1. ADwie komórki o połowie liczby chromosomów
2. BJedna komórka z podwojoną liczbą chromosomów
3. CCztery genetycznie różne komórki potomne
4. DDwie genetycznie identyczne komórki potomne

In the scientific name Homo sapiens, what does Homo name?

1. AThe family
2. BThe species
3. CThe kingdom
4. DThe genus

A bone marrow transplant can treat some blood cancers. Why does it work?

1. AThe donor red cells divide to make more red cells
2. BThe transplant replaces the patient's bones
3. CThe donor stem cells produce new, healthy blood cells
4. DThe donor marrow contains antibiotics that kill cancer

Czerwona krwinka trafia do bardzo słonego (hipertonicznego) roztworu. Co się dzieje?

1. AWoda wnika do komórki, a ona pęka
2. BSól wnika do komórki, a ona puchnie
3. CWoda opuszcza komórkę, a ona się kurczy
4. DNic się nie zmienia, bo sól nie może przeniknąć

Why does ice float on liquid water?

1. AIce molecules are lighter than liquid water molecules
2. BIce contains more air than liquid water
3. CHydrogen bonds hold ice in an open, less dense structure
4. DIce is denser than liquid water

HIV infects and destroys helper T cells. Why do people with untreated advanced HIV get infections that healthy people rarely get?

1. ATheir immune response is too weak to control normally harmless microbes
2. BHIV kills the normal flora of the skin and gut
3. CHelper T cells make the antibiotics that the body needs to fight infection
4. DThe virus turns harmless microbes into pathogens

Which parent's gamete decides the biological sex of a human baby, and why?

1. AThe father's, because a sperm carries either an X or a Y
2. BThe mother's, because an egg carries either an X or a Y
3. CBoth equally, because each gives one Y chromosome
4. DThe mother's, because she gives two X chromosomes