The only known eukaryotic-bacterial symbioses are the two that explain the development of the chloroplast and mitochondria

A. true
B. false


B

Biology & Microbiology

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Space is not a limiting factor on a rocky intertidal beach

Indicate whether the statement is true or false

Biology & Microbiology

Climate is the

a. average weather conditions an area receives over a short period of time. b. average weather conditions an area receives over a long period of time. c. amount of sunlight an area receives over the course of a year. d. amount of rainfall an area receives over the course of a year. e. amount of erosion that occurs in an area over the course of a year

Biology & Microbiology

Stretched out, an adult's gastrointestinal tract would be

a. 10?15 feet. b. 15?20 feet. c. 21?30 feet. d. 30?35 feet. e. 5?10 feet.

Biology & Microbiology

Hox genes regulate limb formation by ____.

A. suppressing Dlx gene expression in areas where limbs should not grow B. timing the activation of Dlx genes C. causing cell death in any cell not expressing the Hox gene D. converting sugar into energy to allow the process to go to completion E. inducing mutations in plants

Biology & Microbiology