Which of the following statements about
digestion in ruminants is false?
a. Ruminant animals have symbiotic bacteria
to aid in the digestion of their food.
b. Food materials are re-chewed.
c. Chewing results in mechanically breaking
down food and exposing more cellulose to
digestive enzymes.
d. Ruminants have a smaller range of foods in
their diet than do humans.
e. Pronghorn antelopes and other herbivores
have a single but disproportionately large
stomach.
E
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A model organism called Caenorhabditis elegans (a soil nematode) has been used to study cell signaling during development because of its simplicity. For example, a structure such as the vulva arises from only three cells, which are called ____ cells
Fill in the blank with the appropriate word.
Who was the first person acknowledged to have seen living, moving cells by using a microscope?
a. Robert Hooke b. Robert Brown c. Galileo Galilee d. Rudolf Virchow e. Anton van Leeuwenhoek
What is the study of the interactions of organisms with one another and their physical environment?
a. biology b. physiology c. microbiology d. ecology e. environmental science
Sensations of fear, pleasure, and sexual arousal are produced by the ________
Fill in the blank(s) with correct word