1. Escherichia coli
2. Euglena viridis
3. Amoeba proteus
4. Paramecium caudatum
Virus envelope is known as:
1. capsid
2. virion
3. nucleoprotein
4. core
Some hyperthermophilic organisms that grow in highly acidic (pH 2) habitats belong to the two groups called:
1. eubacteria and archaea
2. cyanobateria and diatoms
3. protists and mosses
4. liverworts and yeasts
Infectious proteins are present in:
1. geminiviruses
2. prions
3. viroids
4. satellite viruses
Oxygenic photosynthesis occurs in:
1. Chromatium
2. Oscillatoria
3. Rhodospirillum
4. Chlorobium
T.O. Diener discovered a:
1. free infectious RNA
2. free infectious DNA
3. infectious protein
4. bacteriophage
1. | Archaea resemble eukarya in all respects. |
2. | Archaea have some novel features that are absent in other prokaryotes and eukaryotes. |
3. | Archaea completely differ from both prokaryotes and eukaryotes. |
4. | Archaea completely differ prokaryotes. |
1. | archaebacteria that contain protein homologous to eukaryotic core histones |
2. | archaebacteria that lack any histones resembling those found in eukaryotes but whose DNA is negatively supercoiled |
3. | bacteria whose DNA is relaxed or positively supercoiled but which have a cytoskeleton as well as mitochondria |
4. | bacteria that contain a cytoskeleton and ribosomes |
Which of the following is a slime mould?
1. Rhizopus
2. Physarum
3. Thiobacillus
4. Anabaena