Zooxanthellae are members of the following group of Eukaryotes:
a. diatoms.
b. coccolithophores.
c. amoebas.
d. dinoflagellates.
e. ciliates.
D
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Organisms that ignore oxygen and grow equally well in its presence or absence are called
A. microaerophiles. B. aerotolerant. C. facultative anaerobes. D. anoxygenic.
Division of the cytoplasm in animal cells
a. begins with the formation of microtubules at each pole of the nucleus. b. begins with Golgi body vesicles guided by microtubules to the center of the cell. c. begins in the S phase of interphase. d. begins with the deposition of a very rigid lipid bilayer, which is the major constituent of the cell wall. e. is visible as a cleavage furrow created by microfilaments in the cell's midsection
A researcher has hypothesized that the chemical tributyltin (an additive in boat paint) seeps into the water causing reproductive defects in developing marine snails
In an experiment testing the effects of tributyltin on developing snails, which condition should be used as a control? A) Developing snails are kept in a tank of water and exposed to below-expected levels of tributyltin. B) Developing snails are kept in a tank of water and exposed to boat paint without tributyltin. C) Developing snails are kept in a dry tank to avoid exposure to contaminated water. D) Developing snails are kept in a tank of water that has been cleaned with chlorine bleach.
The part of the brain that directly controls secretions from the pituitary gland is the ___________
Fill in the blank(s) with the appropriate word(s)