A radula is characteristic of certain members of phylum Platyhelminthes

____________________ Indicate whether the statement is true or false.


F, Mollusca

Biology & Microbiology

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The three-dimensional structure of a functional protein composed of a single polypeptide chain is referred to as the ____________ structure

A. primary B. secondary C. tertiary D. quaternary

Biology & Microbiology

If Andrew has indeed inherited the Huntington's allele from his mother, what are the chances that he could pass the allele to his children?

a. 1 in 4 (25%) b. 2 in 4 (50%) c. 3 in 4 (75%) d. 4 in 4 (100%)

Biology & Microbiology

The breast muscle of a wild duck is dark, while that of a domesticated chicken is white. The breast muscle in a wild duck consists predominately of

A. fast-twitch muscles with abundant capillaries and mitochondria. B. fast-twitch muscles with few capillaries or mitochondria. C. slow-twitch muscles with abundant capillaries and mitochondria. D. slow-twitch muscles with few capillaries or mitochondria. E. random-twitch muscles with few capillaries or mitochondria.

Biology & Microbiology

The typical waking and sleeping cycles of most people can be described as:

a. crepuscular. b. nocturnal. c. diurnal. d. lunar. e. annual.

Biology & Microbiology