Multiple choice

The normal flora of humans comprises microbes which are non-pathogenic to them. Which of the following organisms is/are present in the intestinal micro-flora of breast fed infants?

  1. Bacteroides

  2. Lactobacilli

  3. Bifidobacteria

  4. Streptococcus salivarius

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The intestinal microflora of the young breast fed infants consists mainly of Bifidobacteria, which are Gram-positive. The low pH in the large intestine of the breast fed babies would be unfavorable for the growth of E. coli, and so Bifidobacteria proliferate.