Substances that start chemical reactions are called
a. substrata.
b. starters.
c. promoters.
d. reactants.
e. products.
D
Biology & Microbiology
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Andrew is studying bone development and calcium absorption in elephants. Which vitamin is
likely an important component of his study?
a. vitamin D b. vitamin A c. vitamin K d. vitamin B
Biology & Microbiology
Which of the following pertains to diphtheria?
A. Prevented by the DTaP immunization B. Symptoms include vomiting and diarrhea C. Results in meningitis D. Can be transmitted from mother's birth canal to neonate
Biology & Microbiology
Describe the symbiotic relationships of tube-dwelling and burrowing worms
What will be an ideal response?
Biology & Microbiology
Vertebrate locomotion results from the contraction of muscles anchored to what other tissue?
A. bone B. an exoskeleton C. nerves D. the plasma membrane E. each other
Biology & Microbiology