Short hairlike parts on the cell surface are called:
A. Cilia
B. Pseudopod
C. Flagella
D. Spores
Ans: A. Cilia
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Which of the following statements regarding photosystem II is FALSE?
A. Photosystem II encompasses a series of redox reactions. B. Photosystem II contains a chlorophyll molecule that absorbs light at 680 nm. C. Photosystem II strips an electron from water for direct transfer to the electron transport chain. D. Photosystem II oxidizes water to form oxygen. E. Photosystem II contains a series of pigments where energy is transferred by resonance energy transfer.
Answer the following statements true (T) or false (F)
1. Sweat has a higher salt concentration than the blood does in humans. 2. Animals that do not control internal water concentration also typically do not control the concentrations of ions like sodium and potassium. 3. An animal that exhibits broad tolerance for changes in the salinity of its environment is said to be "euryhaline." 4. The materials in urine are ONLY those that are filtered from the blood or hemolymph and not reabsorbed by the body following filtration.
What information is used to calculate the age-specific fertility rate, mx?
A. total number of offspring born to females within a reproductive age class B. number of female offspring born to females within a reproductive age class C. the per capita growth rate of all females D. the net reproductive rate of females E. the average age of first reproduction for females
Which of the following toxins causes the MOST serious consequences when absorbed through the skin?
A) Dry lime B) Poison oak C) Pesticides D) Sulfuric acid