Answer the following statements true (T) or false (F)

1. Zooplankton are heterotrophs.
2. Biomass is always highest at the lower trophic levels.
3. Most of the Earth's phosphorus is trapped in sedimentary rocks.
4. Assimilation is the process by which inorganic substances are incorporated into organic molecules.


1. TRUE
2. FALSE
3. TRUE
4. TRUE

Biology & Microbiology

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a. light b. ATP and NADPH c. photosystem 2 d. glucose e. NADP+

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Stomach motility

a. decreases following a heavy meal. b. controls the amount of material leaving the pyloric sphincter. c. is unaffected by emotional state or external environmental factors. d. may be retarded when stretch receptors on the stomach wall are activated. e. is increased by hormones released in response to high stomach acidity.

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