What direction does something that has oxygen-rich blood go?
Options:
- (A) mouth of rivers
- (B) the body's largest organ
- (C) move to different locations
- (D) Earth orbiting the Sun
- (E) Move to another area
- (F) to move people
- (G) animal transport
- (H) Away from the heart
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Let's think first: Arteries generally carry oxygen-rich blood. Arteries carry blood away from the heart. Something that brings blood away from the heart carries oxygen-rich blood.... So the answer is [(H)]


What describes something that requires activation energy to get started?
Options:
- (A) igniting fuel and oxidiser
- (B) heating liquids
- (C) Fully cooking the oysters
- (D) Riding a bike
- (E) an engine
- (F) burning coal
- (G) chemical equations
- (H) Firecrackers
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Let's think first: All chemical reactions require activation energy to get started. Chemical equations describe chemical reactions. Chemical equations describe something that requires activation energy to get started.... So the answer is [(G)]


What is used as energy by most organisms?
Options:
- (A) sodium
- (B) water
- (C) energy.
- (D) food
- (E) sugar
- (F) Energy
- (G) solutes
- (H) light
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Let's think first: Glucose is used for energy by the cells of most organisms. For instance, glucose is a sugar. Sugar is used for energy by the cells of most organisms.... So the answer is [(E)]


What are cell walls made of?
Options:
- (A) fossils
- (B) peat
- (C) moss
- (D) cations
- (E) Carbon
- (F) Fiber
- (G) Fungi
- (H) sodium
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Let's think first: Plants use cellulose for their cell walls. Basically, fiber is cellulose . Cells walls are fiber.... So the answer is [(F)]


What kind of plant would shed its leaves each year?
Options:
- (A) it needs them
- (B) grapevines
- (C) burning coal
- (D) warm-blooded
- (E) When it's cold
- (F) white
- (G) heat or cold
- (H) homogenous
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Let's think first: Plants that shed their leaves seasonally each year are called deciduous plants. Grapevines are woody deciduous plants. Grapevines shed their leaves seasonally each year.... So the answer is [(B)]


What do reptiles have?
Options:
- (A) wild rides
- (B) nerves
- (C) toadies
- (D) Bodily water
- (E) backbones
- (F) four limbs
- (G) Leptospirosis
- (H) pipe
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Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Let's think first: Vertebrate chordates have a backbone. Because reptiles are vertebrates, they are chordates. Reptiles have backbones.... So the answer is [(E)]