What gets converted into the type of energy that animal cells need?
Options:
- (A) photosynthesis
- (B) solar energy
- (C) sugar
- (D) UV
- (E) food
- (F) water
- (G) Energy
- (H) Light
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Let's think first: Glucose is used for energy by the cells of most organisms. Food is converted into glucose. Food is converted into the type of energy that most cells use.... So the answer is [(E)]

What organism uses their sense of smell to find a mate?
Options:
- (A) fur seals
- (B) bears
- (C) Amphibians
- (D) Fish
- (E) mammals
- (F) Butterflies
- (G) rabbit
- (H) Honey smelling bees
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Let's think first: Most salamanders use their sense of smell to find a mate. Salamanders are a type of amphibian. Some amphibians use their sense of smell to find a mate.... So the answer is [(C)]

What shape are the things that develop from spores?
Options:
- (A) fungi
- (B) a prism
- (C) small
- (D) Heart
- (E) complex
- (F) bushes
- (G) ferns
- (H) gills
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Let's think first: Flowers produce spores that develop into gametophytes. Gametophytes are photosynthetic and often heart-shaped. Flowers produce spores that develop something heart-shaped.... So the answer is [(D)]

Running water is better able to dissolve oxygen and nutrients than what?
Options:
- (A) pouring water
- (B) scarce resources
- (C) ocean water
- (D) river water
- (E) acetic acid
- (F) Veins and arteries.
- (G) an organism's body
- (H) stagnant water
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Let's think first: Running water is better able to dissolve oxygen and nutrients than standing water. If the water stands still and becomes stagnant, it can become a breeding ground for mosquitoes. Running water is better able to dissolve oxygen and nutrients than stagnant water.... So the answer is [(H)]

Where do rays enter the eye?
Options:
- (A) glass
- (B) Summer
- (C) pupil
- (D) lenses
- (E) harmful
- (F) the sun
- (G) photons
- (H) skin
--
Let's think first: Light enters the eye through an opening called the pupil. Light rays are focussed on the retina. When rays are shined at the eyes, they enter an opening called the pupil.... So the answer is [(C)]

Sperm and egg nuclei combine to do what?
Options:
- (A) combine genes
- (B) rapid expansion
- (C) fertilize gametes
- (D) reproduce
- (E) allow growth
- (F) build proteins
- (G) spread flower seeds
- (H) remove eggs
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Let's think first: Fertilization of gametes produces a diploid zygote. Sperm and egg nuclei combine to form the diploid zygotic nucleus 2. Sperm and egg nuclei combine to fertilize gametes.... So the answer is [(C)]