Zadanie 6
(a) Describe how proteins are built from their constituent units. (b) Explain hormonal regulation of human blood glucose concentration. (c) Explain how meiosis contributes to genetic variation.
Point mutations and altered protein structure
Use a specific example to connect a DNA base change with a change in protein structure or function.
Tę umiejętność sprawdza 5 zadań wzorowanych na arkuszach IB z lat 2022–2024.
Zadania sprawdzające tę umiejętność: 5 Otwórz w wyszukiwarce z filtrami
Zadanie 6
A health study considers sickle-cell anaemia in a malaria-endemic region of Uganda. Individuals with two sickle-cell alleles may develop severe anaemia; heterozygotes generally lack that severe phenotype and have some protection against malaria. (a) Outline…
Zadanie 9
A point mutation changes one amino acid in a haemoglobin chain without changing the chain length. How can this affect the protein? A. The substitution must convert the chain into a fatty acid B. It can alter interactions and the three-dimensional structure or…
Zadanie 14
Which genetic change produces the altered beta-globin associated with sickle-cell disease? A. Loss of an entire chromosome from every erythrocyte precursor B. A single base substitution in the beta-globin coding sequence C. Addition of a complete second…
Zadanie 4d
Explain how a single-base substitution can change a protein.
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