The second law of thermodynamics states that:
A) energy can be neither created nor destroyed.
B) all living organisms must eat to derive energy.
C) energy is required to bring molecules into a cell against a concentration gradient.
D) in energy-yielding reactions, matter goes from a more-ordered to a less-ordered state.
Answer: D
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Chlorophyll b absorbs green wavelengths of light that chlorophyll a cannot absorb. In this respect, chlorophyll b acts as
A. an accessory pigment. B. an energizer for photosynthetic bacteria. C. a light absorber in the green light. D. a more efficient pigment.
An important feature of many wounds that may lead to more serious problems is that they are
A. well aerated. B. well fed. C. sterile. D. relatively anaerobic.
A tissue type that is composed of fibroblasts and collagen fibers, provides support for intestinal muscles and forms
capsules around kidneys is known as ____ tissue.
a. dense, irregular connective b. dense, regular connective c. cartilage d. stratified epithelium e. simple squamous epithelium
DNA codes for the production of
a. proteins. b. minerals. c. inorganic molecules. d. vital gasses. e. water.