Which of the following is NOT an adaptation used by marine mammals to extend dive times?
a. size-relative increase in blood volume.
b. increase in erythrocyte count
c. size-relative increase in lung volume
d. elevated concentration of muscle myoglobin
e. reduced circulation to nonessential organs
C
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A translocation cross may occur in an individual that has a(n)
A. reciprocal translocation B. unbalanced translocation. C. simple translocation. D. All of the answers are correct
Resting zone
What will be an ideal response?
Choose the description below that best matches the current model of RNA polymerase holoenzyme.
A. A core enzyme composed of five polypeptides bound by ribosomes. B. A core enzyme composed of five polypeptides bound by a transcription factor. C. A core enzyme composed of five sigma factors bound by a polypeptide chain. D. An open complex or "bubble" formed by DNA, mRNA, and RNA polymerase.
Two large, open spaces called the ________ contain three convoluted shelflike bones that increase the surface area for conditioning inhaled air
Fill in the blank(s) with correct word