seminar 4 - energy production

Question 1

In what place in the human body can we find the highest concentration of brown adipose tissue?

Answer 1

In and around the thorax

Question 2

What is the name of the molecule that is involved in leaking protons in the mitochondria without contributing to ATP production?

Answer 2

Uncoupling protein 1 (UCP-1)

Question 3

What is not a difference between brown and white adipose tissue?

Answer 3

Brown adipose tissue can take up glucose, whereas white adipose tissue can’t

Question 4

True or false: exposure to mild cold activates brown adipose tissue

Answer 4

true

Question 5

Both people with obesity and endurance athletes have higher intramyocellular triglyceride concentrations compared to untrained but lean individuals. What is the name of this paradox?

Answer 5

the athletes paradox

Question 6

Despite having similar quantities of IMTG in their muscles, there are some differences between the IMTG in obese people and endurance athletes. What is the correct difference?

Answer 6

Endurance athletes have smaller lipid droplets

Question 7

So, in endurance athletes, lipid droplets inside the muscle are smaller and are located near the mitochondria. Select the two answers why this characteristic is beneficial for an endurance athlete.

Answer 7

• Smaller droplets can be broken down more quickly and thus free fatty acids can be used for beta-oxidation
• Being close to the mitochondria means a shorter travel distance for free fatty acids to be transported into the mitochondria