Blood returns to the heart from the lungs through the pulmonary (arteries/veins/valves)

What will be an ideal response?


veins

Biology & Microbiology

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When an atom or molecule gains one or more electrons, it is said to be:  

A.  energized. B.  oxidized. C.  polarized. D.  reduced.

Biology & Microbiology

The minimal lethal concentration (MLC) is the ________.

A. highest concentration of a drug that prevents growth of a particular pathogen B. lowest concentration of a drug that prevents growth of a particular pathogen C. lowest concentration of a drug that kills a particular pathogen D. highest concentration of a drug that kills a particular pathogen

Biology & Microbiology

Which of the following organelles is correctly

matched with its function? a. nucleus; protein synthesis b. ER; heredity c. Golgi bodies; packaging d. mitochondria; digestion e. chloroplasts; storage of lipids

Biology & Microbiology

Cilia and flagella are both made of ________

A) actin B) tubulin C) intermediate proteins D) phospholipids

Biology & Microbiology