Nitrifying bacteria convert
a. ammonia to nitrite and nitrate.
b. nitrate to nitrite to nitrogen gas.
c. nitrate to ammonia.
d. urea to ammonia.
e. ammonia to urea.
A
Biology & Microbiology
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Cells that can break down bone matrix by secreting enzymes and acids are called ________
a. osteocytes b. osteoclasts c. marrow d. osteoblasts
Biology & Microbiology
Notochords are found in
a. adult hemichordates (acorn worms). b. adult urochordates (tunicates). c. adult cephalochordates (lancelets). d. a and b only. e. b and c only.
Biology & Microbiology
Over 90% of all cells in the nervous system are ____
a. motor neurons b. sensory neurons c. integrator neurons d. interneurons e. glial cells
Biology & Microbiology
Photons from light can boost an electron to a higher energy state.
Answer the following statement true (T) or false (F)
Biology & Microbiology