Which two of the following both involve a progressive degeneration of the nervous system?
a. epilepsy and concussion
b. multiple sclerosis and meningitis
c. meningitis and encephalitis
d. Alzheimer's and encephalitis
e. Parkinson's and Alzheimer's
E
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In higher animals, including humans, meiosis results in the production of
(a) egg cells (ova). (b) gametes. (c) sperm cells. (d) all of the above.
To prepare for a hiking trip in the Appalachian mountains you buy several field guides for the region from a used bookstore. You notice that the older guides list a single species of tiger swallowtail butterfly Papilio glaucus and an Appalachian morph of this species. However the newest guide list two separate species P. glaucus and P. appalachiensis. The authors of this guide state that the biological species concept was used in determining their classifications. What do you think led them to list two separate species of tiger swallowtail?
A. The discovery that P. glaucus and P. appalachiensis interbreed in the wild. B. The discovery that P. glaucus and P. appalachiensis have a genomic similarity of 99%. C. The discovery that P. glaucus and P. appalachiensis do not interbreed in the wild. D. The discovery that P. glaucus and P. appalachiensis have distinct differences in wing coloration. E. The discovery that P. glaucus and P. appalachiensis feed on different host plants.
Which organelle is found in plant cells but not in animal cells?
A) chloroplast B) endoplasmic reticulum C) centriole D) mitochondrion
Sperm cells are the only type of cell in animals that have:
A) cilia. B) a flagellum. C) pili. D) cytoplasm. E) genetic material.