Although Our Human Brain Is Only About 2% of Our

question 53

Multiple Choice

Although our human brain is only about 2% of our body weight, it uses some _____% of our energy.

• A) 15
• B) 25
• C) 35
• D) 45

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Definitions:

Phenylketonuria

A genetic disorder caused by a deficiency in the enzyme needed to process phenylalanine, leading to harmful levels of the amino acid in the body.

Klinefelter Syndrome

Sex chromosome abnormality in which a male has an extra X chromosome (XXY).

Dominant-Recessive

A pattern of inheritance in genetics where one allele (variant of a gene) masks the effects of another allele.

Huntington's Disease

A genetic disorder that causes the progressive breakdown of nerve cells in the brain, affecting an individual's functional abilities and usually resulting in movement, cognitive, and psychiatric disorders.