The immediate ancestors of the genus Australopithecus is believed to be the genus:a
Aegyptopithecus.
b. Pongo.
c. Pan.
d. Sahelanthropus.
e. Ardipithecus
E
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The total solute concentration of a solution of water and other substances (salts, proteins, etc.) is referred to specifically as its
A. osmolarity. B. tonicity. C. salinity. D. specific gravity. E. density.
Order the following statements to correctly describe the route of secreted protein as it is synthesized and secreted from a eukaryotic cell. _____ The protein folds and undergoes modification within the rough ER. _____ The protein travels within a membranous vesicle from the ER to the cis face of the Golgi apparatus. _____ Translation begins on a ribosome. _____ The protein travels toward the trans face of the Golgi, from which it is packaged into a secretory vesicle. _____ The secretory vesicle travels to and merges with the cell membrane, releasing its contents outside of the cell. _____ The ribosome attaches to the rough endoplasmic reticulum and the newly formed polypeptide is pushed into the lumen of the rough ER.
Fill in the blank(s) with the appropriate word(s).
The undulating membrane of Parabasala is used for ____
a. defensive purposes b. asexual reproduction c. structural support d. food absorption e. movement
The knee-jerk reflex used by physicians to check
nerve response is based on a. muscle spindles. b. stretch receptors. c. spinal cord synapses. d. muscle spindles and stretch receptors. e. all of these.