An enzyme speeds up a chemical reaction in the cell, but can only be used once.

a. true
b. false


b. false

Anatomy & Physiology

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Delivers oxygen and nutrients to the tissues.

A) Lymphatic B) Cardiovascular C) Immune D) Endocrine

Anatomy & Physiology

If the stroke volume of the left ventricle is 65 mL/beat and the stroke volume of the right ventricle is 68 mL/beat, what will happen to the relative distribution of blood in the systemic and pulmonary circulation after 15 beats?

What will be an ideal response?

Anatomy & Physiology

An aggregation of cells and extracellular materials which performs a discrete function is known as a/an ________.

A. cell B. organelle C. organ D. tissue

Anatomy & Physiology

The action potential of a muscle fiber occurs

A.  at the end plate. B.  along the sarcolemma and down the T-tubules. C.  within the sarcoplasmic reticulum. D.  in the mitochondria.

Anatomy & Physiology