The smallest unit that carries out all the basic functions of life is a ________.
Fill in the blank(s) with the appropriate word(s).
cell
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Which of the following subatomic particles are shared by two atoms to form covalent bonds?
1. neutron 2. electron 3. proton a) 1 only b) 2 only c) 3 only d) 2 & 3 only e) 1, 2 & 3
Which of the following is NOT a membrane lipid?
A) phospholipids B) sphingolipids C) cholesterol D) All are membrane lipids.
Why is it possible for a person with type A negative blood to have a negative reaction when receiving a transfusion of whole type O negative blood?
A. Some type O cells possess B agglutinogens on their surface. B. The Rh factor would cross-react. C. Blood transfusions can only occur within the same blood group. D. The type O blood may have high enough levels of anti-A antibodies that could cross-react with the recipient's cells.
In the excitement phase, the uterus rises from its forward-tilted (anteverted) position.
Answer the following statement true (T) or false (F)