What are molecules that the immune system recognizes as foreign to the physical entity?
Options:
- (A) bacteria
- (B) proteins
- (C) antibodies
- (D) Allergies
- (E) negative
- (F) immunities
- (G) parasites
- (H) antigens
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Let's think first: Antigens are molecules that the immune system recognizes as foreign to the body. Bodies are physical entities. Antigens are molecules that the immune system recognizes as foreign to the physical entity.... So the answer is [(H)]

The penetration of the egg by a sperm takes place where?
Options:
- (A) salt and water.
- (B) an area swollen with pus
- (C) By wind and rain
- (D) outside the body
- (E) Earth revolving around the sun
- (F) inside the prostate
- (G) inside the female organism
- (H) inside the male organism
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Let's think first: Fertilization takes place inside the female organism. Fertilization is the penetration of the egg by a sperm. The penetration of the egg by a sperm takes place inside the female organism.... So the answer is [(G)]

Most invertebrates have brains capable of what?
Options:
- (A) telepathy
- (B) movement
- (C) telekinesis
- (D) allow growth
- (E) animals
- (F) learning
- (G) relocation
- (H) power
--
Let's think first: Most invertebrates have a more complex nervous system. Cephalopods have well developed nervous systems with complex brains capable of learning. Most invertebrates have brains capable of learning.... So the answer is [(F)]

What happens in the archegonium?
Options:
- (A) eggs separate
- (B) Earth orbiting the Sun
- (C) sperm and egg fuse
- (D) competition
- (E) fallopian tubes join
- (F) permineralization
- (G) It expands
- (H) cloning
--
Let's think first: Fertilization occurs when sperm swim to an egg inside an archegonium. Fertilization occurs when the egg and sperm fuse and join. An egg and sperm can fuse when sperm swim to an egg inside an archegonium.... So the answer is [(C)]

Organisms rely on a relatively narrow range of what?
Options:
- (A) Decibels
- (B) water
- (C) food
- (D) relativity
- (E) acidity
- (F) spectrum
- (G) balance
- (H) Light
--
Let's think first: All life relies on a relatively narrow range of pH, or acidity. All organisms have a life-span. Organisms rely on a relatively narrow range of acidity.... So the answer is [(E)]

Aggression is behavior that is intentionally what?
Options:
- (A) friendly
- (B) complex
- (C) loud
- (D) made
- (E) negative
- (F) quiet
- (G) abusive
- (H) kicked
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Let's think first: Aggression is behavior that is intended to cause harm or pain. Abuse means causing intentional pain or harm. Aggression is behavior that is intentionally abusive.... So the answer is [(G)]