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

What is true of a recessive allele?

1. AIts trait shows whenever one copy is present
2. BIts trait shows only when two copies are present
3. CIt is always harmful to the organism
4. DIt is found only on the X chromosome

What is a model in science?

1. AAn exact copy that has no limitations
2. BA single measurement from an experiment
3. CThe control group of a study
4. DA simplified representation of a real system

What are the three parts of a nucleotide?

1. AA phosphate, a sugar and a nitrogen base
2. BA glycerol, a phosphate and a fatty acid
3. CA carboxyl group, a base and a lipid
4. DAn amino group, a sugar and a fatty acid

A thermometer gives readings of 36,1, 36,1 and 36,2 °C for a water bath that is really at 37,0 °C. How are these readings best described?

1. AAccurate but not precise
2. BPrecise but not accurate
3. CBoth accurate and precise
4. DNeither accurate nor precise

In che cosa i grassi saturi differiscono da quelli insaturi?

1. AHanno molti doppi legami e sono liquidi a temperatura ambiente
2. BNon hanno doppi legami C=C e di solito sono solidi
3. CContengono azoto e formano proteine
4. DSi sciolgono facilmente in acqua

How are photosynthesis and aerobic respiration related?

1. ABoth take place only in chloroplasts
2. BBoth release oxygen into the air
3. CBoth happen only in animal cells, never in plant cells
4. DThe products of one are the reactants of the other

Quale tipo di grafico è il migliore per mostrare come cambia la temperatura di un paziente nell'arco di 24 ore?

1. AUn grafico a linee
2. BUn quadrato di Punnett
3. CUn grafico a torta
4. DUna rete alimentare

An inhibitor binds to an enzyme away from the active site and changes the enzyme's shape. Adding more substrate does not restore the rate. What type of inhibition is this?

1. ADenaturation by heat
2. BCompetitive inhibition
3. CNoncompetitive inhibition
4. DSubstrate saturation