A human body has about ________ cells.
A) 3.2 billion
B) 20,600
C) 30 trillion
D) 10 to 100 million
C) 30 trillion
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Enzymes, once released from plant and animal cells, can remain present and function independent of the organisms that synthesized them.
Answer the following statement true (T) or false (F)
A trait that is adaptive in one context and later turns out to have adaptive value in a different context is called ____
a. paedomorphic b. heterochronic c. allometric d. an exaptation e. endemic
Flies are most likely to be attracted to flowers that
a. have red and yellow patterned petals. b. emit putrid odors. c. have UV light reflective petals. d. have large, showy flowers. e. emit strong, fruity odors.
MacConkey agar plates represent ________ medium
A) a minimal B) a selective C) a differential D) both a differential and a selective E) both a minimal and a selective