nucleic acids. certain proteins. cell membranes. certain carbohydrates.
Answer:
18ft
Explanation:
because there are 18 blocks total 9 blocks at the bottom 6 in the middle and 3 at the top.
The endocrine gland is the one that is ductless an release its secretion directly in bloodstream example liver, pancreas, etc. The given statement is true and the correct option is B.
<h3>What is endocrine gland's secretion called?</h3>
The secretion of endocrine gland is referred to as hormones, which are chemical messengers that helps in body's control and coordination.
The endocrine gland is the one that is ductless an release its secretion directly in bloodstream example liver, pancreas, etc.
Thus, the given statement is true and the correct option is B.
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Cell membranes serve as barriers and gatekeepers. They are semi-permeable, which means that some molecules can diffuse across the lipid bilayer but others cannot.
