Photosynthesis converts the energy of light into ____
a. pigments
b. chemical bond energy
c. proteins
d. electrons and protons
e. heat energy
ANSWER: b
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You have before you a living organism, which you examine carefully. Which of the following should convince you that the organism is acoelomate?
A) It is triploblastic. B) It has bilateral symmetry. C) It possesses sensory structures at its anterior end. D) Muscular activity of its digestive system distorts the body wall.
Which of the following types of epithelia would be likely to make up the tubules of the kidney?
A. cuboidal B. squamous C. columnar and squamous D. columnar E. pseudostratified
An individual who is a carrier of a genetically inherited disease
a. has the disease, and any of their offspring will have the disease. b. does not have the disease but must have a parent with the disease. c. does not have the disease but may have offspring with the disease. d. has the disease and must have a parent with the disease. e. does not have the disease but must have a parent with the disease and may have offspring with the disease.
An action potential in a neuron begins when
a. a threshold potential is reached. b. the resting potential is established. c. gated sodium channels close. d. when gated potassium channels close. e. more than one of these occur