Human Microbiome 2

Question 1

(T/F) As our age increases, the diversity of microbes we are exposed to decreases

Answer 1

False!

Diversity increases

Question 2

(T/F) The AMOUNT of microbes we are exposed to stays relatively the same throughout our lives

Answer 2

True!

Question 3

Name some environmental factors that affect the microbe we are exposed to

Answer 3

breast milk, pets, foods, travel, sexual activity

Question 4

Name five factors that affect the human micro biome

Answer 4

Genetics, Hormonal changes, Weight gain, Stress, Declining immunity with age

Question 5

What do we mean when we say gnotobiotic animal?

Answer 5

We know the entire microbiota composition of that animal

Question 6

What do we mean when we say ex-germ free animal?

Answer 6

It was a germ free animal that was inoculated with one or more organisms

Question 7

Name some effects that occurred to the intestinal microbiota in germ free mice

Answer 7

They required:
More calories
Vitamin supplements like K and B
Were more susceptible to infection

Question 8

(T/F) Bacteria decreases nutrient absorption

Answer 8

False!

it increases it

Question 9

What is an example of a simple columnar epithelial tissue?

How many layers does it have?

Answer 9

Those found in the digestive tract

One (uni-layered)

Question 10

What type of epithelial tissue is found in the digestive tract?

Answer 10

Simple columnar

Question 11

What type of epithelial tissue is found in the skin?

Answer 11

Stratified epithelial tissues