Holdfasts, gas-filled floats, and a thick, leathery
surface are found in species of
a. red algae.
b. brown algae.
c. bryophytes.
d. green algae.
e. euglenoids.
Answer: b
Biology & Microbiology
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Anaerobic organisms thrive:
a. in oxygen-free environments. b. where oxygen is abundant. c. where carbon dioxide is abundant. d. in surface waters of the ocean. e. in the middle of the water column.
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Lancelets possess which of the following as adults?
a. notochord b. gill slits c. nerve cord d. segmented muscles e. all of these
Biology & Microbiology
One gene is able to encode information for different forms of a protein via ____
a. alternative splicing b. primary splicing c. secondary splicing d. mRNA mutations e. tRNA mutations
Biology & Microbiology
How many different types of amino acids are found in proteins?
A) 4 B) 1,000 C) 200 D) 100 E) 20
Biology & Microbiology