The human body contains thousands of catalysts called ______________
Fill in the blank(s) with correct word
enzymes
Physics & Space Science
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Occurs on a planet or moon because the axis of rotation remains tilted in one direction during its orbit about its star
Physics & Space Science
An atom which has 4 protons and 6 neutrons will be electrically neutral if it contains
A) 4 electrons. B) 6 electrons. C) 10 electrons. D) at least 1 electron.
Physics & Space Science
In beta decay, it is found that the energy of the emitted electrons varies and is always less than what is calculated on the basis of the parent and daughter nuclei. This is evidence for the existence of another particle called the
A) gluon. B) meson. C) neutrino. D) quark. E) positrons.
Physics & Space Science
A nonchemical combination of two or more substances in variable proportions is called
a. a mixture. b. a compound. c. an ion. d. a molecule.
Physics & Space Science