The first wildlife refuges were established in the United States shortly after 1960.

a. true
b. false


Answer: b. false

Biology & Microbiology

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Phycobilins are

(a) photosynthetic pigments. (b) found in the red algae. (c) blue and red pigments. (d) all of the above.

Biology & Microbiology

A spontaneously generated enclosed bilayer structure is called a(n) ____

Fill in the blank with the appropriate word.

Biology & Microbiology

Which group of cells makes antibodies?

a. Red blood cells b. B cells c. Platelets d. C cells e. T cells

Biology & Microbiology

 TRAIT    SPECIESABCDE110000211111311111411110511100611000 The table shows the distribution of traits (A-E) in six extant species (1-6). A "0" indicates the ancestral condition, while a "1" indicates the derived condition. Based on this data, which pair of species diverged most recently?

A. 6 and 5 B. 1 and 4 C. 2 and 3 D. 6 and 4 E. 2 and 4

Biology & Microbiology