________ tissue covers body surfaces
A) Nervous
B) Epithelial
C) Connective
D) Muscle
B
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When one atom donates an electron to another atom, the donating atom becomes a ________ charged ion, and the receiving atom becomes a ________ charged ion. These ions are joined together by a/an ________ chemical bond.
A. positively; negatively; hydrogen B. negatively; positively; ionic C. positively; negatively; ionic D. negatively; positively; covalent
Which of the following curves develops as a child begins to stand and walk?
A) lumbar B) thoracic C) sacral D) coccygeal E) spinal
In what ways are the autonomic nervous system and the somatic nervous system different?
What will be an ideal response?
What do human cells require to carry out energy-yielding chemical reactions?
a. oxygen b. carbon dioxide c. salt d. ATP molecules e. sunlight