Biologia na egzaminy wstępne na pielęgniarstwo: karta pracy z odpowiedziami

What is an antigen?

1. AA drug that kills viruses
2. BA protein that carries oxygen
3. CA white blood cell that engulfs and digests bacteria
4. DA molecule that the immune system sees as foreign

Which codon signals the start of translation in most genes?

1. AUGA
2. BUAA
3. CAUG
4. DUAG

Which organelle breaks down fatty acids and hydrogen peroxide?

1. ACentriole
2. BRibosome
3. CPeroxisome
4. DChloroplast

Sickle cell disease is caused by a single base change that replaces one amino acid in haemoglobin. What type of mutation is this?

1. AA frameshift mutation
2. BA missense mutation
3. CA silent mutation
4. DA nonsense mutation

Kiedy zachodzi crossing-over między chromosomami homologicznymi?

1. AW anafazie mitozy
2. BW profazie I mejozy
3. CW telofazie II mejozy
4. DW fazie S interfazy

Dlaczego ślepota barw czerwono-zielonych jest częstsza u mężczyzn niż u kobiet?

1. AAllel jest dominujący u mężczyzn i recesywny u kobiet
2. BKobiety nie mogą odziedziczyć allelu po ojcach
3. CMężczyźni mają jeden chromosom X, więc wystarczy jeden allel
4. DAllel znajduje się na chromosomie Y

A person's body temperature starts to fall in a cold room. Which responses help bring it back up?

1. ASweating and widening of blood vessels in the skin
2. BSlower heart rate and less muscle activity
3. CFaster breathing and more urine production
4. DShivering and narrowing of blood vessels in the skin

In a family, a trait appears mostly in males. Affected men have daughters who are unaffected, but some of these daughters have affected sons. Which pattern fits best?

1. AY-linked
2. BAutosomal recessive with equal sexes
3. CX-linked recessive
4. DAutosomal dominant