Muscles can only pull; they never push
a. true
b. false
Ans: a. true
You might also like to view...
The plant alkaloid ricin is nontoxic inside castor beans, but becomes active when digested by an animal. The toxic form of ricin kills by
A. inactivating the animal's immune system. B. over stimulating the animal's heart rate. C. inactivating ribosomes needed for translation. D. binding to RNA polymerase. E. releasing cyanide.
Which of the following definitions is
CORRECT?
a. A community refers to interaction between populations and their environment. b. A community refers to interaction between species and their environment. c. A community refers to the area in which different species live. d. A community refers to all species that live and interact in a specific area. e. None of these are correct
The portion of the DNA molecule that is translated is
composed of a. introns. b. anticodons. c. exons. d. transcriptons. e. exons and transcriptons.
Which is NOT a correct association?
Select one: a. adhesion junctions—skin b. adhesion junctions—bladder c. gap junctions—stomach d. tight junctions—intestines e. tight junctions—bladder