Zadanie 4a
Identify the DNA-profiling technique used to: (i) make many copies of a DNA region; (ii) separate DNA fragments by size.
DNA replication
Umiejętności w tym dziale
Umiejętności z tego działu sprawdza 29 zadań wzorowanych na arkuszach IB z lat 2022–2026. Dział pojawia się w 22 z 57 arkuszy w bazie.
Zadania z tego działu: 29 Otwórz w wyszukiwarce z filtrami
Zadanie 4b
The model profiles show one mother, her child and three possible fathers. Deduce the most likely father and give a reason.
- Materiał graficzny
Zadanie 4c
Explain why forensic DNA profiles use multiple independent markers.
Zadanie 6
A thermocycler follows the temperature programme shown. What is the purpose of holding the mixture at stage X? A. To expose the templates by melting hydrogen bonds B. To permit primers to anneal at the lowest temperature C. To allow the thermostable polymerase…
- Materiał graficzny
Zadanie 6
The schematic shows a DNA replication fork. What does helicase do at this fork? A. Separates paired strands by disrupting hydrogen bonds between bases B. Forms peptide bonds between neighbouring nucleotides C. Adds phosphate groups to every amino acid D. Makes…
- Materiał graficzny
Zadanie 7
DNA fragments migrate from the wells through the gel. Which labelled migration distance corresponds to the longest fragments? A. A B. B C. C D. D
- Materiał graficzny
Zadanie 6
Each panel proposes the strand composition of two DNA molecules after one round of replication. Which panel represents semiconservative replication? A. Panels Q and R B. Panel Q only C. Panel R only D. Panel P only
- Materiał graficzny
Zadanie 7
Each band represents a DNA fragment in a simplified profile. Which candidate is compatible with being the child’s father, assuming the listed mother is correct and ignoring mutation? A. Candidate Q B. Candidate S C. Candidate P D. Candidate R
- Materiał graficzny
Zadanie 7
DNA fragments move through an agarose gel from the wells shown. Which deduction is supported? A. P travelled furthest and represents smaller DNA fragments than Q B. Q is positively charged and moves toward the negative electrode C. Q must have a lower…
- Materiał graficzny
Zadanie 8
Biological function depends on coordinated structures and recurring processes. (a) Outline the roles and regulation of progesterone during the menstrual cycle. (b) Describe the polymerase chain reaction. (c) Explain how carbon is recycled through a terrestrial…