When we eat dairy products, we need ________, the enzyme used to hydrolyze ________ into glucose and galactose. In the absence of this enzyme, we may experience cramps and diarrhea, a condition called ________.

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


lactase; lactose; lactose intolerance

Biology & Microbiology

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Choose the true statements about the evolution of larval dispersal in marine snails. 

_____ The evolution of non-dispersing snails is likely to hinder speciation. _____ Clades of non-dispersing snails are less species rich than those of dispersing snails. _____ Loss of structures in the transition from dispersing to non-dispersing may inhibit evolutionary reversal. _____ Possession of dispersing larvae is the ancestral state in snails. _____ Cladistics shows that there are more instances of the transition from dispersing to non-dispersing larvae than the reverse.

Biology & Microbiology

Prokaryotes belong to ________

a. Kingdom Plantae. b. Domain Archaea. c. Kingdom Protista. d. Kingdom Animalia. e. Domain Eukarya.

Biology & Microbiology

The appearance of an egg outside of a goose's nest is called

A. an innate releasing mechanism. B. a sign stimulus. C. imprinting. D. a fixed action pattern.

Biology & Microbiology

A(n) ________ is the attachment point of a muscle to a bone that remains stationary during movement

Fill in the blank(s) with correct word

Biology & Microbiology