Folate (Vitamin B9): Why we need it, dietary sources, and how we absorb and metabolize it

The video tutorial discusses folate, also known as vitamin B9, its dietary sources, absorption, metabolism, and biological functions. It highlights the importance of folate in synthesizing nucleic acids, amino acids, and catecholamines, and its role in treating methanol toxicity. The recommended daily allowance varies by age, with special considerations for pregnancy and lactation. The video concludes with a summary of folate's significance and dietary guidelines.

What is another name for folate?

• Vitamin C

• Vitamin B9

• Vitamin D

• Vitamin B6

Which of the following is NOT a source of dietary folate?

• Fish

• Fortified cereals

• Broccoli

• Nuts

Where in the body is folate primarily absorbed?

• Colon

• Liver

• Stomach

• Duodenum

What is the bioavailability of folate from dietary sources?

• 25%

• 50%

• 75%

• 100%

Folate is crucial for the synthesis of which of the following?

• Carbohydrates

• Lipids

• Proteins

• Nucleic acids

How does folate help in methanol toxicity?

• By increasing methanol absorption

• By decreasing methanol production

• By metabolizing formic acid

• By enhancing methanol excretion

Which enzyme is responsible for converting dihydrofolate to tetrahydrofolate?

• Adenosyl transferase

• Thymidylate synthase

• Dihydrofolate reductase

• Methionine synthase

What is the recommended daily allowance of folate for adults?

• 300 micrograms

• 200 micrograms

• 400 micrograms

• 150 micrograms

During pregnancy, what is the recommended daily intake of folate for normal risk?

• 1000 micrograms

• 800 micrograms

• 600 micrograms

• 400 micrograms

For high-risk pregnancies, what is the recommended folate intake?

• 3000 micrograms

• 4000 micrograms

• 2000 micrograms

• 1000 micrograms