Which taxon of eukaryotic organisms is thought to be directly ancestral to the plant kingdom?
a) foraminiferans
b) apicomplexans
c) green algae
d) radiolarians
e) golden algae
Ans: c) green algae
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Which primate group is classified as hominins?
a. bonobos b. gorillas c. humans d. gibbons e. orangutans
Which statement is TRUE about Marfan syndrome?
a. The elasticity of the aorta is affected. b. The condition affects the shape and mobility of fingers. c. Some affected individuals are of normal height. d. One in 500 people are affected. e. Marfan syndrome is easily diagnosed.
The psychoactive drug Ecstasy
a. relieves anxiety. b. sharpens the senses. c. produces a mild high. d. can kill. e. does all of these.
Which statement about receptors is false?
a. They are highly selective. b. They are also called ligands. c. They are proteins or glycoproteins. d. They are found inside the cell and on the cell surface. e. They are activated by binding to a signaling molecule.