question: What disease is caused when mitosis is regulated?
Options:
- (A) tuburculosis
- (B) death
- (C) HIV
- (D) disease
- (E) illness
- (F) arthritis
- (G) Toxicity
- (H) cancer
answer: Cancer is a disease that occurs when the cell cycle is no longer regulated. Mitosis is part of the cell cycle. Cancer is a disease that occurs when mitosis is no longer regulated.
The answer is (H)

question: The bonds of that which when heavy is deuterium cause what to expand when it freezes?
Options:
- (A) matter
- (B) rings
- (C) CO 2
- (D) liquids
- (E) gas
- (F) solutes
- (G) cations
- (H) water
answer: Hydrogen bonds cause water to expand when it freezes. Deuterium, or heavy hydrogen, is an isotope of hydrogen, or a hydrogen atom with a neutron added. The bonds of that which when heavy is Deuterium cause water to expand when it freezes.
The answer is (H)

question: Energy enters what in the form of sunlight or chemical compounds.
Options:
- (A) biomes
- (B) fire
- (C) light
- (D) Energy.
- (E) Energy
- (F) LEDs
- (G) propagate
- (H) photons
answer: Energy enters ecosystems in the form of sunlight or chemical compounds. Biomes are global ecosystems. Energy enters biomes in the form of sunlight or chemical compounds.
The answer is (A)

question: Urine is a product of what organ of the body that is excreted by the urinary system?
Options:
- (A) bowel
- (B) epidermal
- (C) bladder
- (D) alveoli
- (E) lungs
- (F) urine
- (G) mammals
- (H) NaCl
answer:
Urine is the liquid waste product of the body that is excreted by the urinary system. Liquid waste is put into the bladder. Urine is the waste product in the bladder that is excreted by the urinary system.
The answer is (C)