The protein that carries oxygen in human blood is __________.

Fill in the blank(s) with the appropriate word(s).


Ans: hemoglobin

Biology & Microbiology

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Semen components are produced by

a. the prostate gland. b. the seminal vesicles. c. the testes. d. the urinary bladder. e. all except “urinary bladder.”

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Which is not one of the four atoms that make up the bulk of living organisms?

A) Oxygen B) Nitrogen C) Calcium D) Carbon

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The use of phenol (carbolic acid) as a wound disinfectant was first practiced by

A) Lister. B) Semmelweis. C) Pasteur. D) Holmes. E) Koch.

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Choose the receptor that is not correctly matched with its function.

A. Nociceptor: transmits signals that the brain interprets as pain B. Baroreceptor: monitors hydrostatic pressure in blood vessels C. Proprioceptor: monitors stretch of muscle fibers D. Peripheral chemoreceptor: monitors the pH of the cerebrospinal fluid E. Chemoreceptor: perceives taste and smell stimuli

Biology & Microbiology