Answer:
Explanation:
A skeletal muscle cell is surrounded by a plasma membrane called the sarcolemma with a cytoplasm called the sarcoplasm. A muscle fiber is composed of many fibrils, packaged into orderly units.
Answer:
The cell wall is like the integumentary system of the human body because they both protect the interior from the external environment.
Explanation:
The answer is b because it is negative on our world
Answer:
exoskeleton
Explanation:
An exoskeleton is the hard outer covering that supports and protects some animals without backbones.
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