The rigid chitinous exoskeleton of an arthropod has all of the following functions except it
A. provides a place for muscle attachment.
B. protects the animal from predators.
C. impedes water loss.
D. maintains a uniform size for all individuals of that species.
E. prevents injury to the animal.
D. maintains a uniform size for all individuals of that species.
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EGF (epidermal growth factor) activates cell division by binding ________.
Fill in the blank(s) with the appropriate word(s).
Which of the following is a feature of prokaryotic cells but NOT eukaryotic cells?
A) pili B) cell wall C) flagella D) DNA
The hydrologic cycle involves
A. the formation of water molecules from hydrogen and oxygen in the atmosphere. B. the manufacture of water during photosynthesis in plants. C. the consumption of water during aerobic cellular respiration. D. None of these answers is correct.
An organism in the domain Eukarya is characterized by all of the following EXCEPT
A) ingestion of organic matter to acquire nutrients. B) the ability to maintain precise internal conditions. C) being composed of prokaryotic cells. D) the potential to grow and reproduce.