This unique feeding structure, called a lophophore, is found in which of these groups?
1.brachiopods
2.bivalves
3.porifera
4.polychaetes
1
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Which of the following statements are true of Trichomonas vaginalis?
_____ It attacks the human genitourinary tract. _____ It lacks mitochondria. _____ It is a member of the supergroup Discoba. _____ It synthesizes its own organic nutrients. _____ It uses flagella for movement.
How many oxygen atoms are in the products of the following reaction? C6H12O6 + 6 H2O + 6 O2 ? 6 CO2 + 12 H2O
A) 18 B) 6 C) 12 D) 24
In the phototrophic production of energy, the oxygen originates from
A. carbon dioxide. B. water. C. glucose. D. hydrogen peroxide.
Individuals with adaptive traits tend to survive longer and produce more offspring, leading to ___ of the species
a. extinction b. descent c. artificial selection d. evolution e. a decrease in fitness