Biologia na egzaminy wstępne na pielęgniarstwo: karta pracy z odpowiedziami

What is an allele?

1. AA section of DNA between genes
2. BA pair of matching chromosomes from each parent
3. CA different version of the same gene
4. DA protein made from a gene

What is a zygote?

1. AAn unfertilised egg cell
2. BThe diploid cell formed when a sperm fertilises an egg
3. CA body cell that has just completed its first round of mitosis
4. DA haploid cell made by meiosis

What do receptor proteins in the cell membrane do?

1. AThey bind specific signal molecules, such as hormones
2. BThey make ATP for the cell
3. CThey digest bacteria that enter the cell
4. DThey store the cell's genetic code for making proteins

What does Mendel's law of segregation state?

1. AEach gamete receives both alleles of every gene
2. BDominant alleles are more common in a population than recessive ones
3. CGenes on different chromosomes are always inherited together
4. DThe two alleles of a gene separate so each gamete gets only one

Co decyduje o kształcie i funkcji białka?

1. AKolejność kwasów tłuszczowych w błonie
2. BLiczba niesionych grup fosforanowych
3. CIlość glukozy w komórce
4. DSekwencja jego aminokwasów

How can bacteria pass antibiotic-resistance genes directly to other bacteria?

1. ABy osmosis, moving genes in water
2. BBy mitosis, sharing copies of their chromosomes with neighbours
3. CBy meiosis, forming gametes with new alleles
4. DBy conjugation, transferring plasmids through a pilus

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

1. A12
2. B4
3. C2
4. D3

Matrycowa nić DNA ma sekwencję 3'-TACGGA-5'. Jakie mRNA z niej powstaje?

1. A5'-ATGCCT-3'
2. B5'-AUGCCU-3'
3. C5'-UACGGA-3'
4. D5'-TACGGA-3'