PH 88S Microbiota

What term refers to all the different microbes living in a defined habitat?

• microbiome

• microbiota

• gut bacteria

• short-chain fatty acids

Tags

NGSS.MS-LS2-3

What is one of the important things that our commensal gut microbes do that our body can't really do on its own?

• synthesize glucose

• produce amino acids

• enhance oxygen absorption

• break down complex carbohydrates

Tags

NGSS.HS-LS2-3

What happens when gut microbes are not fed enough diverse fiber?

• they become dormant

• they produce excess SCFAs

• they infect the body

• they signal the brain to eat more

How does a diverse range of fiber-rich foods help in weight management?

• by increasing calorie intake

• by suppressing appetite

• by reducing metabolism

• by promoting overeating

What diseases can a healthy gut microbiota protect against? (Select all that apply)

• Alzheimer's disease

• diabetes

• heart disease

• cancer

• asthma

How does propionate contribute to satiety signals?

• By reducing glucose production

• By decreasing cholesterol metabolism

• By lengthening the time period of SCFA signaling

• By decreasing the time period of SCFA signaling

How long does the natural GLP-1 molecule last in the human body?

• 20 seconds

• 3-4 minutes

• 30 minutes

• 7 days

What is the approximate half-life of the synthetic GLP-1 molecule?

• 3-4 minutes

• 7 days

• 1 month

• 30 minutes

How does the creation of more SCFAs affect the gut environment?

• it inhibits the growth of commensal microbes

• it makes the environment more basic

• it encourages the growth of harmful pathogens such as E. Coli

• it makes the environment more acidic

We eat 15 g of fiber today. How much fiber did our ancestors consume, on average?

• 100 g

• 30 g

• 20 g

• 50 g