Scheda di esercizi di Biologia per i test di ammissione a infermieristica con soluzioni

What is an ecosystem?

1. AA single organism together with all of its organs and tissues
2. BThe living things in an area and their non-living surroundings
3. CAll the members of one species in an area
4. DThe weather in a particular region

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

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

Which enzyme adds new nucleotides to build a new DNA strand?

1. AHelicase
2. BDNA polymerase
3. CPepsin
4. DRNA polymerase

Which sequence describes the usual flow of genetic information in a cell?

1. AProtein to RNA to DNA
2. BDNA to RNA to protein
3. CRNA to DNA to protein
4. DDNA to protein to RNA

A patient's blood type is B positive. What does this mean?

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

What is the function of the pores in the nuclear envelope?

1. AThey attach the nucleus to the cell membrane
2. BThey make ribosomal RNA for the cell
3. CThey let molecules such as mRNA pass in and out
4. DThey let chromosomes leave the nucleus to be copied

A plant is kept in the dark to use up its starch. One leaf is then sealed in a bag with a chemical that absorbs CO₂, and the plant is placed in light. Later, that leaf has no starch, but the other leaves do. What does this show?

1. AChlorophyll is needed for photosynthesis
2. BCarbon dioxide is needed for photosynthesis
3. CLight is needed for photosynthesis
4. DOxygen is needed for photosynthesis

Cells lining the small intestine have tiny finger-like folds of membrane called microvilli. What does this tell you about their job?

1. AThey absorb substances, so they need a large surface area
2. BThey move food along by beating like cilia
3. CThey make digestive enzymes in large amounts
4. DThey protect the gut from bacteria by producing mucus