Worms with a well-developed circulatory system (including five pairs of hearts) are
A) echinoderms.
B) eels.
C) nematodes.
D) annelids.
E) platyhelminths.
D
Biology & Microbiology
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The nucleolus is the site of:
A. protein synthesis. B. uncoiling and unraveling of chromosomes. C. ribosome assembly. D. lipid synthesis. E. chromosome replication.
Biology & Microbiology
The SA node, the __________ spontaneously
generates the action potentials that set the pace for cardiac contractions. Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology
Which of the following causes of biodiversity loss are NOT interconnected?
A. habitat loss B. pollution C. overharvesting D. global climate change E. None of the above are correct. All of these causes are interconnected.
Biology & Microbiology
The outer lining of a cell is the:
A) cytosol. B) nucleus. C) cytoskeleton. D) plasma membrane.
Biology & Microbiology