Trochophores, the free-swimming larvae of many mollusks, are propelled through the water by  

A.  flagella.
B.  cilia.
C.  flame cells.
D.  nephridia.
E.  the radula.


B.  cilia.

Biology & Microbiology

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When a phosphate group is transferred from ATP, active transport pumps ____

a. trigger exocytosis b. change their shapes c. become ionized d. fuse with the surrounding phospholipid membrane e. are destroyed

Biology & Microbiology

Each nucleosome has __________ base pairs of DNA wrapped around a disc-shaped core of eight

histone molecules. a. 146 b. 28 c. 18 d. 10,000 e. 456

Biology & Microbiology

Which of the following is common to both Sanger sequencing and next-generation sequencing?

A) radioactive labels B) gel electrophoresis C) tethered DNA fragments D) chain terminating nucleotides E) lasers

Biology & Microbiology

Viroids cause disease in

A. animals. B. plants. C. bacteria. D. fungus.

Biology & Microbiology