Chemical reactions that require an input of energy are said to be ________.
Fill in the blank(s) with the appropriate word(s).
endergonic
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Plasma membranes allow certain molecules to pass, while blocking others. Membranes with this property are called
A) impermeable. B) freely permeable. C) selectively permeable. D) actively permeable. E) nonpermeable.
Answer the following statements true (T) or false (F)
1. Third-degree burns can damage tissue down to the bone. 2. The nails are accessory structures of the integumentary system. 3. The skin is an accessory structure of the integumentary system. 4. A thin sheetlike structure in the body can be referred to as a membrane. 5. The skin can be considered both a cutaneous membrane and a connective tissue membrane.
The humerus is an example of:
a. a short bone b. a long bone c. a flat bone d. an irregular bone
In a(n) ________ synapse, current flows directly between cells
A) electrical B) chemical C) electrochemical D) ionic E) charged