QuestionSBA
QuestionChoice
Monoamine oxidases are a family of enzymes that catalyse the oxidation of monoamines. They are involved in breakdown of digestive products and also act as monoamine neurotransmitters. They do not cause the brown colouration of brown adipose tissue.
10007015
e
Monoamine oxidase
QuestionChoice
Alkaline phosphatase is an enzyme found in many forms, most commonly in the liver and bone. It is a diagnostic biomarker in diseases such as hepatitis or osteomalacia. It does not cause the brown colouration of brown adipose tissue.
10007014
d
Alkaline phosphatase
QuestionChoice
Brown adipose tissue is present during foetal life but diminishes after the first decade of life. It has high levels of cytochrome oxidase in the mitochondria, which plays a role in energy production in aerobic cells by catalysing the last step of respiration. Cytochrome oxidase enzymes account for its brown colouration.
10007011
a
Cytochrome oxidase
QuestionChoice
Xanthine oxidase is a form of xanthine oxireductase, catalysing the oxidation of xanthine to uric acid and the general catabolism of purines. It is unrelated to adipose tissue.
10007012
b
Xanthine oxidase
QuestionChoice
Alanine transaminase is an enzyme found most commonly in the liver, used as a clinical biomarker for liver health. It does not cause the brown colouration of brown adipose tissue.
10007013
c
Alanine transaminase
Concept
Chapter
2693
4558
Adipose tissue
Topic
154
Musculoskeletal physiology and disease
13949
Adipose tissue can be divided into brown and white adipose tissue.

Which of the following enzymes accounts for the brown colouration of brown adipose tissue?
a