Each hemoglobin molecule contains

A) four alpha chains.
B) one alpha and one beta chain.
C) four iron atoms.
D) one heme group.
E) a molecule of oxygen and a molecule of carbon dioxide.


C

Anatomy & Physiology

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Myofibrils are composed primarily of

A) fascia and tendons. B) troponin and tropomyosin. C) actin and myosin. D) perimysium and endomysium.

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What is the function of sucrase, maltase, lactase?

What will be an ideal response?

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Cardiac muscle is found in the walls of the heart and blood vessels.

Answer the following statement true (T) or false (F)

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Acne is caused by

A. testosterone. B. sebum. C. abnormal keratinization of hair follicles. D. Propionibacterium. E. All of these are factors.

Anatomy & Physiology