Small Mammals Need More O₂ Per Gram of Body Weight

question 53

Multiple Choice

Small mammals need more O₂ per gram of body weight than large mammals do. Compared to large mammals, small mammals have _______ lungs and breathe _______ times per minute.

• A) bigger; more
• B) smaller; more
• C) similar-sized; more
• D) smaller; fewer

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Definitions:

Spina Bifida

A congenital defect in the spine in which part of the spinal cord and its meninges are exposed through a gap in the backbone.

Structural Malformation

A defect or abnormality in the structure of an organ or part of the body, often present from birth.

Spinal Tissues

The various types of tissues, including muscles, nerves, and skeletal structures, that make up or are associated with the spine.

Dominant Gene

A gene that masks the expression of a recessive gene in the phenotype; dominant genes express their traits when present.