Biology Pearson Exam Revision for 2024/2025

Which sequence lists organisms in the order of producer, consumer, and decomposer? - Ansalgae, bird, earthworm Background: Algae are photosynthetic organisms. Many birds consume plant parts. Earthworms decompose dead materials. Organisms with prokaryotic cells are separated into two domains... - AnsBacteria and Archaea Bacteria - AnsMost diverse and widespread prokaryotes. Where do the prokaryotes archaea live? - AnsExtreme environments, such as salty lakes. In which domain are all organisms with eukaryotic cells grouped? - AnsDomain Eukarya Protists - AnsA diverse collection of mostly single-celled eukaryotes. Kingdom Plantae - AnsConsists of multicellular eukaryotes that produce their food by photosynthesis. Kingdom Fungi - AnsIncludes eukaryotic organisms that mostly decompose organic wastes and absorb nutrients into their cells. Kingdom Animalia - AnsConsists of multicellular eukaryotes that obtain their food by ingesting (eating) other organisms. In the figure below, what leads directly to the reproductive success of these beetles? - AnsThe beetles with traits best suited to the environment survive. Background: Those individuals with heritable traits best suited to the environment will leave the greatest number of healthy, fertile offspring. A single-celled eukaryotic organism that is neither a consumer nor a decomposer would most likely be classified in _____. - Ansone of the kingdoms of Protista Background: Protista is a diverse group of several kingdoms, but some of its members are algae, singlecelled producers. When the human virus HIV first appeared, the mortality rate of infected individuals was close to 100%. However, recent information shows some individuals are unaffected by exposure to the virus. Why is this not surprising? - AnsHumans are genetically diverse, and some are immune to the virus. Background: As in all populations, individuals in human populations vary in their traits. Some individuals have genetic modifications that do not allow entry of HIV into their immune cells, thus making them immune to the virus and its effects. Such individuals could be favored by natural selection. Which statement about genetics is true? - AnsDifferences among organisms reflect different nucleotide sequences in their DNA. Technology is _____. - Ansthe application of scientific knowledge for some specific purpose. Background: This is technologies goal. The teeth of grain-eating animals (such as horses) are usually broad and ridged. This makes the teeth suitable for grinding and chewing. Meat-eating animals (such as lions) have pointed teeth that are good for puncturing and ripping flesh. This illustrates - Ansa result of natural selection, which connects form and function. To be of value to science, hypotheses must be __________. - Anstestabl