Which embryonic cell layer develops into the lining of the gut in most eumetazoans?
a. mesoderm
b. epiderm
c. mesoglea
d. endoderm
e. ectoderm
D
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Lack of telomerase activity limits what?
A. the rate of DNA replication B. the number of replication bubbles that form during replication C. the number of times a cell can divide D. the number of Okazaki fragments that can be linked together E. the rate of meiosis
Glial cells function to ____
a. conduct electrical impulses b. support and nourish neurons c. secrete collagen fibers into the extracellular matrix d. release secretions from a free surface e. move ions across the cell membrane
All of the following are organisms within the
domain eukarya with one exception. Select the exception.
a. bacteria. b. animals. c. protists. d. fungi. e. plants
The cuticle helps a plant conserve water by ____.?
a. covering the stomata
b. reducing a plant’s capacity for photosynthesis
c. absorbing visible light
d. restricting the amount of water a plant’s root absorbs
e. restricting the amount of water vapor that diffuses out of aboveground parts.