Bacteria present in the digestive tracts of some herbivores function to:
a. provide bulk to their feces.
b. produce minerals for their hosts.
c. detoxify harmful materials found in the food.
d. digest the animal waste products from the herbivore diet.
e. digest the cellulose cell wall of plant cells.
E
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________ anaphylaxis is referred to as an atopic reaction.
Fill in the blank(s) with the appropriate word(s).
In plants, wilting of leaves and stems results from ____
a. hemolysis b. an increase in turgor pressure c. plasmolysis d. a lack of solutes in the cell e. a higher than normal concentration of water in the cell
Which of the following statements about australopiths is true? a. Thin-enameled molars hint that the australopiths must have eaten a diet of soft plants and tender meat
b. Dentition shows that australopiths were carnivores. c. Australopith footprints found in Tanzania by Mary Leakey proved that they moved by knuckle-walking like modern gorillas. d. Fossils and footprints indicate that all australopiths walked upright.
In DNA replication, a primer is _____
a. what the original DNA strands are called b. an enzyme that breaks the hydrogen bonds between base pairs c. a short piece of nucleic acid that serves as an attachment point for DNA polymerase
d. a molecule that provides the energy for nucleotide attachments e. a regulatory protein that turns on the gene that starts DNA replication