The ____ forms the skeleton of invertebrate chordates

a. pharynx
b. neural crest
c. oral hood
d. notochord
e. cranium


ANSWER: d

Biology & Microbiology

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Which of the following reactions prevails in red blood cells traveling through alveolar capillaries? (Hb = hemoglobin)

A) Hb + 4 O2 ? Hb(O2)4 B) Hb(O2)4 ? Hb + 4 O2 C) CO2 + H2O ? H2CO3 D) H2CO3 ? H+ + HCO3- E) Hb + 4 CO2 ? Hb(CO2)4

Biology & Microbiology

Chromatin remodeling can act as an on/off switch for ________, while microRNA binding can block ________.

A) transcription; translation B) translation; transcription C) synthesis of tRNAs; synthesis of rRNAs D) DNA replication; DNA repair

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A fracture to the cheek would likely damage all of the following bones EXCEPT ____

a. zygomatic b. parietal c. maxilla d. sphenoid e. ethmoid

Biology & Microbiology

Drake wants to know how related he is to his cousin's new baby. Calculate r for him please.

A. 0.125 B. 0.03125 C. 0.0625 D. 0.5 E. 2.5

Biology & Microbiology