Archaeans include three main groups which include

__________ (methane producers), __________ (salt
lovers), and __________ (heat lovers). Fill in the blank(s) with the appropriate word(s).


Answer: methanogens; extreme halophiles; extreme thermophiles

Biology & Microbiology

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The integration of phage DNA into the bacterial chromosome occurs because of

A. the phage's ability to synthesize an enzyme that integrates its DNA into the host's chromosome. B. the phage's ability to synthesize enzymes to enter the bacterium. C. similar RNA nucleotides in both. D. the similarity in enzyme metabolism. E. the phage's ability to synthesize enzymes to enter the bacterium AND similar RNA nucleotides in both.

Biology & Microbiology

All EXCEPT which of the following is true about

chlamydia? a. Forty percent of those persons infected are between ages 15 and 19. b. One in ten sexually active teenage girls is infected. c. Most infected males are undiagnosed because they have no symptoms. d. Many untreated females develop PID. e. Untreated males risk infertility.

Biology & Microbiology

Pollination begins when pollen is transferred from the ________ to the ________ of a flower.

A. anther; ovary B. stigma; embryo sac C. anther; receptacle D. synergid; egg E. anther; stigma

Biology & Microbiology

Which stage marks the progression of HIV to AIDS?

A) stage I B) stage II C) stage III D) stage IV E) stage V

Biology & Microbiology