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

What is cytokinesis?

1. AThe division of the cytoplasm into two cells
2. BThe condensing of chromosomes in prophase
3. CThe copying of DNA before division
4. DThe pairing of homologous chromosomes

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

1. ARNA polymerase
2. BPepsin
3. CDNA polymerase
4. DHelicase

What is activation energy?

1. AThe heat released when a reaction finishes
2. BThe energy plants take in from sunlight
3. CThe energy stored in a molecule of ATP
4. DThe energy needed to start a chemical reaction

What is the difference between an antiseptic and a disinfectant?

1. AAntiseptics kill all spores; disinfectants kill none
2. BAntiseptics are antibiotics; disinfectants are vaccines
3. CAntiseptics are used on living tissue; disinfectants are used on objects
4. DAntiseptics are used on objects and floors; disinfectants are used on skin

Qual è la struttura di base di un virus?

1. AMateriale genetico all'interno di un rivestimento proteico
2. BUn nucleo circondato da una parete cellulare
3. CUna singola cellula con ribosomi e mitocondri
4. DUna catena di amminoacidi senza DNA né RNA

Which statement about identical and non-identical twins is correct?

1. AIdentical twins come from one zygote; non-identical twins come from two
2. BIdentical twins come from two eggs that are fertilised by a single sperm
3. CBoth kinds of twin always share all of their genes
4. DNon-identical twins come from one zygote that splits in two

An mRNA reads AUG-UUU-GGC-UAA. How many amino acids are in the protein made from it?

1. A4
2. B2
3. C12
4. D3

Sucrose is broken down into glucose and fructose during digestion. What type of reaction is this?

1. AHydrolysis, which uses a water molecule
2. BDehydration synthesis, which uses a water molecule
3. CDehydration synthesis, which releases a water molecule
4. DHydrolysis, which releases a water molecule