Archaea in pelagic deep-water are almost exclusively
A) Crenarchaeota.
B) Euryarchaeota.
C) Nanoarchaeota.
D) Thaumarchaeota.
Answer: D
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Of the following, the best way to separate the effects of genes and environment in research is to study
a. identical twins b. adopted children and their adoptive parents c. fraternal twins d. identical twins raised in different environments
Which of the following steps is not one of the phases of a fungal invasion of a plant?
A. Windblown fungal spores land on plant leaves. B. Hyphae grow through cell walls and press against the cell membrane. C. Fungal DNA is replicated by the plant cells. D. Hyphae differentiate into specialized structures called haustoria. E. A fungal spore germinates and forms an adhesion pad that allows it to stick to a plant's leaf.
It is the morning of a big test. You are very nervous about it. Your heart is racing and your blood pressure is increased
You are feeling the effects of the ____ division of the ____ nervous system.
a. parasympathetic; autonomic b. parasympathetic; somatic c. sympathetic; autonomic d. sympathetic; somatic e. autonomic; somatic
The discharge of high levels of microbial nutrients into marine environments has ________.
A. resulted in algal blooms and red tides that have killed marine mammals B. resulted in the production of large hypoxic or anoxic regions C. had negative impacts on shellfish and other bottom-dwelling marine animals D. All of the choices are correct.