A parent cell with 12 chromosomes will produce daughter cells with _____ chromosomes by mitosis
a. 48
b. 24
c. 12
d. 6
e. 3
ANSWER: c
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What do some scientists believe led to the increase in the level of oxygen in the atmosphere?
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What will be an ideal response?
A bond that joins atoms that have opposite charges is a(n)
a. covalent bond. b. hydrogen bond. c. ionic bond. d. coordinate covalent bond. e. polar covalent bond.
Specific heat refers to the amount of energy required to change 1 gram of a substance from the liquid phase to the
vapor phase. __________________ Indicate whether the statement is true or false.