Complete the following sentence: Hemoglobin functions in ________ cells and carries ________ to all cells of the body.

A. bone; calcium
B. white blood; carbon dioxide
C. neural; neurotransmitters
D. red blood; oxygen


Answer: D

Biology & Microbiology

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The classic work of Friedrich Wöhler (1828) that united the fields of biology and chemistry was based on the

A) discovery of yeast ferments. B) production of urea in the laboratory. C) discovery of ATP. D) identification of nucleotide bases. E) analysis of gene segregation.

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Who discovered that DNA was the genetic material or transforming factor that could convert nonvirulent R-type Streptococcus pneumoniae bacterium to the virulent S-type?

A. Weismann and Nageli. B. Griffith. C. Avery, MacLeod, and McCarty. D. Hershey and Chase. E. Watson, Crick, Wilkins, and Franklin.

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The procedure in which tissue is suctioned from the placenta and analyzed for fetal abnormalities is

called a. chorionic villus sampling. b. preimplantation diagnosis. c. amniocentesis. d. fetoscopy. e. senescence.

Biology & Microbiology

What could be considered an evolutionary protective mechanism that occurs frequently during the germinal period?

a. migration b. miscarriage c. endometriosis d. proliferation

Biology & Microbiology