Starfish that reproduce by splitting into pieces are reproducing by

A.) binary fission.
B.) vegetative reproduction.
C.) budding.
D.) fragmentation.


Ans: D.) fragmentation.

Biology & Microbiology

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The ________ model was proposed by Mitchison and Kirschner to explain how polymerization and depolymerization of microtubules occur simultaneously.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

Denaturation of proteins may result in all of

the following EXCEPT a. breakage of hydrogen bonds. b. loss of three-dimensional structure. c. removal of R groups from amino acids. d. alteration of enzyme activity. e. endangerment of a cell's life

Biology & Microbiology

Sound amplification happens in the middle ear because of ________

A) size difference between the eardrum and oval window B) lever action of the ossicles C) resonance in the efferent outer hair cells D) stapedial reflex

Biology & Microbiology

Systemic acquired resistance is

A. a broad-ranging resistance that lasts for a period of days. B. a response whereby antibodies recognize specific antigens. C. a response that occurs when the hypersensitive response fails. D. the same as the human immune response. E. a method for plants to modify their DNA for protection.

Biology & Microbiology