Where does human fertilization naturally take place?
Options:
- (A) hard shelled egg
- (B) petri dish
- (C) bushes
- (D) man
- (E) Earth
- (F) eggs
- (G) woman
- (H) orchids
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Let's think first: Fertilization takes place inside the female organism. Fatty tissue in a woman's body produces female hormones. Fertilization takes place inside a woman.... So the answer is [(G)]

For plants, what is the difference between running and standing water?
Options:
- (A) wind and rain
- (B) precipitation
- (C) distance
- (D) healthier
- (E) seasons
- (F) temperature
- (G) heat produced
- (H) root growth
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Let's think first: Running water is better able to dissolve oxygen and nutrients than standing water. To make it rich in nutrients so the plants are healthier. Running water is healthier for plants than standing water.... So the answer is [(D)]

What is essential for cellular respiration for organisms consuming voas and alcohols?
Options:
- (A) carbon
- (B) glucose
- (C) h2o
- (D) Air
- (E) oxygen
- (F) Energy
- (G) Energy.
- (H) water
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Let's think first: Oxygen is essential for cellular respiration for all aerobic organisms. Aerobic organisms consume VOAs and alcohols. Oxygen is essential for cellular respiration for organisms consuming VOAs and alcohols.... So the answer is [(E)]

What tells a cell what to do?
Options:
- (A) electricity
- (B) proteins
- (C) A computer
- (D) Energy
- (E) nerves
- (F) sweating
- (G) heat energy
- (H) Energy.
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Let's think first: Molecules of DNA are encoded with instructions that tell cells what to do. DNA encodes the information for protein sequences. Proteins tell cells what to do.... So the answer is [(B)]

Many _ can cause the immune system to not work properly.
Options:
- (A) fever
- (B) bacteria
- (C) radiation
- (D) fungi
- (E) A drug.
- (F) Allergies
- (G) cancers
- (H) Toxicity
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Let's think first: Immunodeficiency occurs when the immune system is not working properly. Many cancers can cause immunodeficiency. Many cancers can cause the immune system to not work properly.... So the answer is [(G)]

Evaporation of sweat uses what from the body?
Options:
- (A) expelled
- (B) Positive charges
- (C) all liquids
- (D) properties
- (E) Something to move
- (F) water vapor
- (G) kinetic energy
- (H) Cooling vapors
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Let's think first: Evaporation of sweat uses energy, and the energy comes from body heat. Kinetic energy comes from heat. Evaporation of sweat uses kinetic energy from the body.... So the answer is [(G)]