Free CBC Obesity Science and Etiology Questions and Answers

Question 1

Which of the following accurately describes the primary roles of the hormones leptin and ghrelin in appetite regulation?

Accepted Answer

Leptin signals satiety and is produced by fat cells, while ghrelin stimulates hunger and is primarily produced by the stomach.

Answer

Ghrelin signals satiety and is produced by the pancreas, while leptin stimulates hunger and is produced by the liver.

Answer

Both leptin and ghrelin are produced in the small intestine and work together to stimulate hunger after meals.

Answer

Leptin is a short-term hunger signal released before meals, while ghrelin is a long-term satiety signal related to body fat stores.

Question 2

According to the 'set point theory' of body weight regulation, what happens when an individual significantly reduces their caloric intake to lose weight?

Accepted Answer

The body perceives the weight loss as a threat and initiates metabolic adaptations to conserve energy and increase hunger.

Answer

The body's metabolism permanently increases to burn more fat.

Answer

The body's natural set point automatically resets to the new, lower weight after approximately 30 days.

Answer

Hormones that regulate hunger, such as ghrelin, are suppressed, making it easier to maintain the diet.

Question 3

A counselor is working with a client who states, 'Obesity runs in my family. My parents and grandparents were all heavy, so it's just my genetics. There's nothing I can do.' Which of the following concepts is most important for the counselor to explain?

Accepted Answer

That genetic factors create a predisposition, but environmental and behavioral factors are critical in determining whether obesity develops.

Answer

That family history of obesity is primarily due to learned eating behaviors and has no genetic component.

Answer

That the client should undergo genetic testing to confirm they have the FTO gene before attempting weight loss.

Answer

That specific 'obesity genes' guarantee an individual will become obese, regardless of their lifestyle.

Question 4

In the context of the neurobiology of obesity, the consumption of highly palatable foods (high in sugar, fat, and salt) is known to activate the brain's mesolimbic pathway. This activation leads to a release of which key neurotransmitter, reinforcing the eating behavior and potentially leading to compulsive overeating?

Accepted Answer

Dopamine

Answer

Serotonin

Answer

Acetylcholine

Answer

GABA

Question 5

A bariatric counselor is assessing a client's environment. The client lives in a neighborhood with no sidewalks or parks, has limited access to affordable fresh produce, and is surrounded by fast-food restaurants. These factors are best described as components of:

Accepted Answer

an obesogenic environment.

Answer

a personal cognitive distortion.

Answer

a lack of behavioral motivation.

Answer

a genetic predisposition.

Question 6

From a physiological standpoint, excess visceral adipose tissue is a major health concern primarily because it functions as an active endocrine organ that:

Accepted Answer

releases pro-inflammatory adipokines and free fatty acids, contributing to systemic inflammation and insulin resistance.

Answer

secretes high levels of anti-inflammatory cytokines, reducing the risk of chronic disease.

Answer

increases the body's sensitivity to insulin, leading to improved glucose control.

Answer

primarily stores inert triglycerides that have no metabolic or hormonal effect on the body.