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Anatomy wk 1-5
Question | Answer |
---|---|
Chemical bonds formed by the sharing of electrons are called: | covalent |
Atoms with fewer than eight electrons in the outer energy level will attempt to lose, gain, or share electrons with other atoms to achieve stability. This tendency is called the | octet rule |
Which of the following is not one of the major elements present in the human body? | Zinc |
The approximate pH of gastric fluid is: | 2 |
A magnesium atom has an atomic number of 12, an atomic mass of 25, and a +2 charge. This atom would contain _____ protons, _____ neutrons, and _____ electrons. | 12; 13; 10 |
Which area of the cytoplasm near the nucleus coordinates the building and breaking of microtubules in the cell? | centrosome |
Ribosomes are organelles that | float in the cytoplasm and attach to the endoplasmic reticulum. |
The plasma membrane is composed of all of the following except | tubulin protein. |
A major function of the cell membrane is to | control what enters and leaves the cell. |
The fluid environment that fills the spaces between the cells of the body is called | extracellular matrix. |