A. Bacteria exist in staggering numbers in wide range of habitats. A. Bacteria exist in staggering numbers in wide range of habitats. Bacilli rod-shaped 3. Have almost no other cell organelles, no cytoskeleton. E. We combat disease-causing bacteria with antibiotics.
Most antibiotics are from fungi, which have waged war of survival with bacteria.
F. Mode of nutrition includes all types known. Photoautotrophy Use light energy and carbon dioxide to create energy-rich carbon compounds, as plants do too. Heterotrophy Obtain energy from organic material, as do animals and fungi. Are microscopic, single-celled, lack nuclei. High or low temperatures, high pressure, high salt, extreme pH. 2.