Antibodies transferred from mother to fetus through the placenta is an example of: MCQ with Answer and Explanation

Explanation:
Fibroblast Growth Factor 21 (FGF21) is a hormone primarily secreted by the liver (and to a lesser extent by adipose tissue and pancreas) in response to metabolic stresses like fasting, a high-carbohydrate diet, or mitochondrial dysfunction. Its primary functions are to regulate glucose and lipid metabolism. It improves insulin sensitivity, promotes the uptake of glucose by adipose tissue, stimulates the breakdown of fats (lipolysis) and ketogenesis in the liver, and reduces triglyceride levels. It is considered a 'starvation hormone' and a potential therapeutic target for metabolic diseases like diabetes and obesity.

Explanation:
Lipase, produced by the pancreas, breaks down dietary fats (triglycerides) into monoglycerides and free fatty acids, aided by bile salts.

Explanation:
The pyramid of energy shows the flow of energy at successive trophic levels. Energy decreases as it moves up (about 10% transfer), so the pyramid is always upright. Pyramids of number and biomass may be inverted in some ecosystems (e.g., parasitic food chains, pond ecosystem), but the energy pyramid never is, according to the second law of thermodynamics.