Which statement is not true about metabolism?

Which statement is not true about metabolism?

The statement "Metabolism is solely determined by a person's body weight" is not true about metabolism. Metabolism is a complex process that involves various factors beyond body weight. While body weight can influence metabolic rate to some extent, it is not the sole determining factor.

Several other factors affect metabolism, including:

(i) Body composition: The proportion of muscle mass to fat mass plays a role in metabolism. Muscles are more metabolically active than fat, so individuals with a higher percentage of muscle tend to have a higher metabolic rate.

(ii) Age: Metabolism tends to naturally slow down with age. This is partly due to a decrease in muscle mass and hormonal changes.

(iii) Gender: Men typically have a higher metabolic rate than women. This is because men generally have more muscle mass and a higher basal metabolic rate.

(iv) Hormonal factors: Hormones, such as thyroid hormones and sex hormones (estrogen and testosterone), can influence metabolism. Imbalances in these hormones can lead to changes in metabolic rate.

(v) Physical activity level: Regular exercise and physical activity can increase metabolism, even beyond the calories burned during the activity itself. Exercise helps build muscle, which increases the basal metabolic rate.

(vi) Genetic factors: Genetics can influence an individual's metabolic rate. Some people may naturally have a faster or slower metabolism due to their genetic makeup.

Overall, metabolism is a multifaceted process influenced by various factors, and body weight alone does not determine an individual's metabolic rate.