Freely movable joints are ______ joints.
a) bony
b) catilaginous
c) synovial
d) elastic
e) fibrous
Answer: c) synovial
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The damming of water and removal of water from rivers and streams puts ______ particularly at risk, causing them to seek terrestrial habitats, to decline in numbers, and to go extinct faster than other species.
a. amphibians b. monkeys c. fish d. crustaceans
Transmitter substances may be described as all of the following EXCEPT
a. include acetylcholine. b. change the permeability of postsynaptic cells. c. may be excitatory or inhibitory. d. may participate in synaptic integration. e. ions.
Mitochondria and chloroplasts are the other organelles besides the nucleus that contain:
A. DNA. B. pigments. C. plasma membranes. D. channels. E. pores.
Similar to the nucleus, chloroplasts and mitochondria are ________
A) surrounded by two membranes B) able to synthesize carbohydrates C) manufactured by the nucleolus D) able to synthesize lipids