HUMAN NUTRITION

NUTRITION

DIGESTIVE SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Humans cannot digest food without the aid of small single-celled organisms that live in our digestive tract. Which common name is associated with these single-celled organisms that help humans digest food?
A
algae
B
bacteria
C
protozoa
D
virus
Explanation: 

Detailed explanation-1: -Bacteria are tiny, single-celled organisms that get nutrients from their environments. Some bacteria are good for our bodies-they help keep the digestive system in working order and keep harmful bacteria from moving in.

Detailed explanation-2: -The main types of bacteria in the colon are obligate anaerobes, and the most abundant bacteria are members of the genus Bacteroides, anaerobic gram-positive cocci, such as Peptostreptococcus sp., Eubacterium sp., Lactobacillus sp., and Clostridium sp.

Detailed explanation-3: -Microorganisms can be unicellular (single cell), multicellular (cell colony), or acellular (lacking cells). They include bacteria, archaea, fungi, protozoa, algae, and viruses. Bacteria are single celled microbes that lack a nucleus.

There is 1 question to complete.