During inspiration, the diaphragm __________ and __________ the volume of the thoracic cavity, causing air to flow __________.
a. relaxes; increases; inward
b. contracts; increases; inward
c. relaxes; decreases; outward
d. relaxes; decreases; inward
e. contracts; decreases; inward
B
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Homologous chromosomes are held together in the
A) synaptonemal complex. B) centromere. C) kinetochore. D) nucleus. E) MTOC
Blood collected from a victim at a crime scene contains 30% adenine. A short distance away, a knife is found with traces of blood containing 20% thymine. What conclusion can be drawn from this evidence?
a. The blood on the knife belonged to the killer. b. The blood on the knife belonged to the victim. c. The knife was not the murder weapon. d. Further DNA sequencing is required.
An example (or examples) of potential energy is/are
A. light and chemical bonds. B. concentration gradients. C. chemical bonds. D. chemical bonds and concentration gradients. E. light.
Increasingly population density will most
likely lead to which type of distribution pattern?
a. clumped b. random c. uniform d. uniform and clumped e. random and clumped