A-LevelBiologyBiodiversity and conservation9700/41 · May/June 2025 · Q96 Marks
A species is classified into one of three domains.
- (a)Two of the domains contain only prokaryotic species. With reference to the two prokaryotic domains, describe the features used to classify prokaryotic species into two different domains.[3]
- (b)Tigers are large mammals that live in many parts of Asia. Fig. 9.1 shows a tiger, Panthera tigris. [Figure 9.1] Complete Table 9.1 by writing the domain, kingdom and genus in which tigers are classified. [Table 9.1][3]
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Mark scheme
Marking points from the official mark scheme (May/June 2025). The mark or mark type is shown in brackets.
- [3] (a) any three from: 1 (domains are) Archaea and Bacteria; 2 membrane lipids ester-linked (Bacteria) vs. ether-linked / not ester-linked (Archaea) ; 3 single type of rRNA (Bacteria) vs. 3 types (Archaea) or Archaea, rRNA / ribosomal subunit, similar to eukaryotic ; 4 peptidoglycan (Bacteria) vs. not peptidoglycan / different (Archaea) ; 5 AVP;
- [3] (b) taxon name domain Eukarya; kingdom Animalia; phylum Chordata class Mammalia order Carnivora family Felidae genus Panthera;
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