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Questions and Answers
What is an exoskeleton?
What is an exoskeleton?
- A connective tissue found in vertebrates and invertebrates
- A rigid internal frame to which organs attach
- A rigid outer shell that supports an organism's shape (correct)
- A flexible internal structure supported by body fluids
What is the skeletal system of vertebrates typically composed of?
What is the skeletal system of vertebrates typically composed of?
- Exoskeleton and endoskeleton
- Cartilage and body fluids
- Hydroskeleton and exoskeleton
- Bones and cartilages (correct)
What is a hydroskeleton?
What is a hydroskeleton?
- A flexible internal structure supported by the hydrostatic pressure of body fluids (correct)
- A connective tissue found in vertebrates and invertebrates
- A rigid internal frame to which organs attach
- A rigid outer shell that supports an organism's shape
What are invertebrates that lack a vertebral column referred to as?
What are invertebrates that lack a vertebral column referred to as?
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What is cartilage?
What is cartilage?
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What is the chemical symbol for hydrogen?
What is the chemical symbol for hydrogen?
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At standard conditions, in what state is hydrogen?
At standard conditions, in what state is hydrogen?
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What is the most abundant chemical substance in the universe?
What is the most abundant chemical substance in the universe?
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How many protons does the most common isotope of hydrogen have?
How many protons does the most common isotope of hydrogen have?
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When did the formation of protons, the nuclei of hydrogen, occur according to the text?
When did the formation of protons, the nuclei of hydrogen, occur according to the text?
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