After spending approximately 40 weeks inside the womb, the average newborn weighs 7 1/2 pounds. Most babies weigh between 5 1/2 and 10 pounds. The average length of a newborn is 20 inches (50 centimeters), with a range of 18 to 22 inches. The average head circumference (the distance around the head) is 14 inches (35 centimeters).
Lactobacillus and Bifidobacterium are the most common probiotic bacteria. The Lactobacillus genus has 18 different bacteria strains, while the Bifidobacterium genus consists of eight strains.
1 8. 2  Heterotroph Bacteria Heterotroph Bacteria, is a bacteria that requires organic substrates to get its chemical energy for growth and development. 3  Heterotroph Bacteria is divided into 4 types: â¢ Parasite Bacteria â¢ Saprophyte Bacteria â¢ Pathogen Bacteria â¢ NonPathogen Bacteria. 4  9. It has been known for 150 years that these bacteria play an important part in oxidizing and fixing iron. 2  8. 3  Heterotroph Bacteria Heterotroph Bacteria, is a bacteria that requires organic substrates to get its chemical energy for growth and development.