Vertebrae in the neck are classified as ________ vertebrae
Fill in the blank(s) with correct word
cervical
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Although choanoflagellates are fundamentally unicellular organisms, they possess the genes that code for cadherins and integrins
Which of the following hypotheses regarding the function of these molecules in choanoflagellates is supported by laboratory experiments? A. Choanoflagellates use adhesion molecules to facilitate the capture of bacterial prey. B. The genes are not actually expressed and are simply vestiges of an ancestor that used cadherins and integrins for adhesion. C. Cadherins and integrins are used for cell adhesion during the formation of temporary multicellular structures to defend against predators. D. Cadherins and integrins are used for cell adhesion during the formation of complex multicellular structures that are resistant to freezing temperatures. E. Choanoflagellates are parasites and use cadherins to attach to host organisms.
If ozone layers in the atmosphere are depleted
A. more infrared wavelength radiation will reach Earth's surface, causing more cases of skin cancer. B. more ultraviolet wavelength radiation will reach Earth's surface, causing more genetic damage in organisms. C. less visible wavelength radiation will reach Earth's surface, causing an increase in photosynthesis. D. less ultraviolet wavelength radiation will reach Earth's surface, causing global cooling. E. less infrared wavelength radiation will reach Earth's surface, causing global warming.
The autonomic subdivision consists specifically of
a. central and peripheral nerves. b. parasympathetic and sympathetic nerves. c. somatic and involuntary nerves. d. brain and spinal cord nerves. e. spinal and cranial nerves.
In photosynthesis, the cycle of reactions that uses carbon dioxide to synthesize glucose is known as the ___.
a) Calvin cycle b) light-independent cycle c) unicycle d) light-dependent cycle