Hostility can be one outcome of:
Options:
- (A) relocation
- (B) behavior research
- (C) decrease stamina
- (D) forces
- (E) fungi
- (F) competition
- (G) tolerance
- (H) Gunshots
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Let's think first: Competition may lead to aggressive behaviors or displays of aggression. Frequently their behavior is aggressively hostile. Competition may lead to hostility.... So the answer is [(F)]

What is important for the chemical equilibrium of the body?
Options:
- (A) sleep
- (B) exercise
- (C) hydration
- (D) dish soap
- (E) eyesight
- (F) hormones
- (G) detergent
- (H) glucose
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Let's think first: Hormones control many cell activities, so they are very important for homeostasis. Homeostasis is the chemical equilibrium of the body. Hormones are very important for the chemical equilibrium of the body.... So the answer is [(F)]

What might fall on land may soak into the ground, becoming groundwater?
Options:
- (A) river
- (B) floods
- (C) Rocks
- (D) Hail
- (E) rain
- (F) Soil
- (G) Trash
- (H) salt
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Let's think first: Some precipitation that falls on land may soak into the ground, becoming groundwater. Hail, rain, sleet, and snow are referred to as precipitation . Hail that falls on land may soak into the ground, becoming groundwater.... So the answer is [(D)]

What is needed from cells for phosphatases to keep the proper ph?
Options:
- (A) plasma
- (B) secretion of bases only
- (C) secretion of proteins
- (D) metabolic reaction
- (E) it helps plants in growing
- (F) Positive charges
- (G) Transfers energy
- (H) secretion of acids and bases
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Let's think first: Cells secrete acids and bases to maintain the proper pH for enzymes to work. Phosphatases are enzymes that remove phosphates from other enzymes. Cells secrete acids and bases to keep the proper pH for phosphatases to work properly.... So the answer is [(H)]

What are molecules that are recognized by the body as alien?
Options:
- (A) parasites
- (B) Acids
- (C) heat or cold
- (D) negative
- (E) antigone
- (F) antibodies
- (G) antigens
- (H) blood cells
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Let's think first: Antigens are molecules that the immune system recognizes as foreign to the body. Yes, foreigners are called Aliens. Antigens are molecules that the immune system recognizes as alien to the body.... So the answer is [(G)]

Viruses first infect, then they release into the host by doing what?
Options:
- (A) Cooking
- (B) kill them
- (C) harm them
- (D) lysing
- (E) illness
- (F) fever
- (G) migrate
- (H) propagate
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Let's think first: Viruses infect and live inside the cells of living organisms. If the virus is nonenveloped it is released by lysing the host cell. Infection by viruses leads to lysing and release.... So the answer is [(D)]