What is the difference between an atom and an element?
Answer: -Huge amounts of identical atoms make up an element
-an atom is one timy part of an element
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Determine the rate of diffusion in the gas-exchange organ of an air-breathing animal where the area for gas exchange in the lung is 200 mm2,
the diffusion constant is 0.08, the (partial pressure of oxygen) of the air in the lung is 140 mm Hg, the in blood flowing into the lung is 90 mmHg, and the thickness of the gas exchange membrane is 0.001 mm. A) 800,000 B) 125 C) 00032 D) 10,000,000
The term ________ is used to describe a mutually beneficial association in which the growth of an organism is dependent on one or more growth factors, nutrients, or substrates provided by another organism in the same vicinity.
Fill in the blank(s) with the appropriate word(s).
When molecules are referred to as D- or L- (for example D-forms of sugars and L-forms of amino acids), the D- and Ldesignations
refer to the specific ____.
a. functional group b. structural isomer c. covalent bond d. secondary structure e. stereoisomer
Because microorganisms are nearly everywhere we can describe them as:
a. Aseptic b. Contaminated c. Ubiquitous d. Pure e. Inoculating