Answer the following questions true (T) or false (F)
1. Anything that occupies space and has mass is energy.
2. An element can't be broken down into another form of pure matter.
3. The number of neutrons in the nucleus of an atom gives it a unique chemical nature.
1. FALSE
2. TRUE
3. FALSE
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Based on this diagram, which organisms evolved more recently?
a. humans and pigs b. moths c. tuna d. yeast
A fat is called ________ if all carbons of the fatty acid chain are single-bonded to 2 other carbons and 2 hydrogens.
A. polyunsaturated B. unsaturated C. saturated D. monounsaturated
Tetanus, which humans acquire from wounds that become infected with the soil microbe Clostridium tetani, is considered noncommunicable.
a. true b. false
The right atrium
A. is the location of the pacemaker cells of a normal heart. B. prevents blood flow from the right ventricle to the right atrium. C. prevents blood flow from the left ventricle to the left atrium. D. prevents blood flow from the pulmonary artery to the right ventricle. E. prevents blood flow from the aorta to the left ventricle.