Available under Creative Commons-ShareAlike 4.0 International License.
- The first forms of life on Earth were thought to be .
- single-celled plants
- prokaryotes
- insects
- large animals such as dinosaurs
- The first organisms that oxygenated the atmosphere were .
- cyanobacteria
- phototrophic organisms
- anaerobic organisms
- all of the above
- Which of the following consist of prokaryotic cells?
- bacteria and fungi
- archaea and fungi
- protists and animals
- bacteria and archaea
- Prokaryotes stain as Gram-positive or Gram- negative because of differences in the .
- cell wall
- cytoplasm
- nucleus
- chromosome
- Prokaryotes that obtain their energy from chemical compounds are called .
- phototrophs
- auxotrophs
- chemotrophs
- lithotrophs
- Bioremediation includes .
- the use of prokaryotes that can fix nitrogen
- the use of prokaryotes to clean up pollutants
- the use of prokaryotes as natural fertilizers
- All of the above
- What event is thought to have contributed to the evolution of eukaryotes?
- global warming
- glaciation
- volcanic activity
- oxygenation of the atmosphere
- Mitochondria most likely evolved from .
- a photosynthetic cyanobacterium
- cytoskeletal elements
- aerobic bacteria
- membrane proliferation
- Protists with the capabilities to absorb nutrients from dead organisms are called .
- photoautotrophs
- autotrophs
- saprobes
- heterotrophs
- Which parasitic protist evades the host immune system by altering its surface proteins with each generation?
- Paramecium caudatum
- Trypanosoma brucei
- Plasmodium falciparum
- Phytophthora infestans
- Which polysaccharide is usually found in the cell walls of fungi?
- starch
- glycogen
- chitin
- cellulose
- What term describes the close association of a fungus with the root of a tree?
- a rhizoid
- a lichen
- a mycorrhiza
- an endophyte
- 1825 reads
