How does an atom become a positive ion?
o
a. it gains an electron.
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b. it gains a neutron.
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c. it loses an electron.
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d. it loses a neutron.
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Specialized cells which perform a particular function form : organisms organs tissues

Nucleic acid certain protein cell membranes certain carbohydrates

Which statement about the pancreas is not true? a. it is an endocrine organ in the abdomen. b. it release chemicals into the digestive system. c. it releases insulin to increase glucose levels. d. it release hormones into the bloodstream.