Zadanie 1a
(i) Distinguish the structure of a green leaf cell from that of a typical fungal cell. (ii) Distinguish a plant nuclear chromosome from a typical bacterial chromosome.
Nucleic acids
Umiejętności w tym dziale
Umiejętności z tego działu sprawdza 41 zadań wzorowanych na arkuszach IB z lat 2022–2026. Dział pojawia się w 29 z 54 arkuszy w bazie.
Zadania z tego działu: 41 Otwórz w wyszukiwarce z filtrami
Zadanie 2
A nucleotide contains one of the pentose structures shown. Which structure can provide the sugar component of a DNA nucleotide? A. Structure A B. Structure B C. Structure C D. Structure D
- Materiał graficzny
Zadanie 2a
Draw a labelled diagram of a single nucleotide that could be incorporated into an RNA transcript.
Zadanie 2b
State the reaction type by which adjacent nucleotides become covalently joined in an RNA chain.
Zadanie 2
A short section of a nucleic acid is represented below. Which component is indicated by X? A. A five-carbon sugar B. A peptide linkage C. A phosphate group D. A nitrogen-containing base
- Materiał graficzny
Zadanie 2
Two double-stranded DNA samples give these approximate base percentages. Which values best fit X and Y? A. X = 30.6; Y = 23.8 B. X = 38.8; Y = 52.4 C. X = 19.4; Y = 26.2 D. X = 25.0; Y = 25.0
- Tabela do uzupełnienia
Zadanie 9
Inherited information is encoded in DNA and expressed in phenotypes. (a) Draw a DNA segment containing two base pairs. Label its nucleotide components and the interactions between the bases. (b) Describe how whole-genome sequencing can be used to infer…
Zadanie 2a
(i) Using the model, identify the molecule in the outer region and give a reason for your identification. (ii) Describe the molecular structure of the core.
- Materiał graficzny
Zadanie 2b
Suggest why the chromosome of Escherichia coli is not packaged into nucleosomes of this type.
- Materiał graficzny
Zadanie 2
An electron-microscope model of chromatin shows repeated bead-like units along a DNA molecule. What is the basic composition of one nucleosome? A. An entire chromosome enclosed by its nuclear membrane B. A ribosome attached to several amino acids C. A lipid…