A steer must eat at least 100 pounds of grain to gain less than 10 pounds of muscle tissue. This illustrates
A) the first law of thermodynamics.
B) the second law of thermodynamics.
C) that some energy is destroyed in every energy conversion.
D) that energy transformations are typically 100% efficient.
Answer: B
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Organisms that live in and around hydrothermal vents at the bottom of the ocean are:
A) acidophilic, psychrophilic, and halophilic. B) halophilic, alkaliphilic, and psychrophilic. C) halophilic, psychrophilic, and barophilic. D) halophilic, thermophilic, and barophilic.
How does DNA structure relate to its function?
A) The three-dimensional structure allows DNA to catalyze chemical reactions. B) The order of nucleotides in a DNA strand specifies the order of amino acids in a protein. C) DNA folds in a variety of shapes, each with a unique function. D) The three-dimensional shape of DNA is critical for the storage of genetic information.
Answer the following statements true (T) or false (F)
1.When fluid enters the collecting duct, it is called urine. 2.An endotherm typically will have a larger nasal cavity than an ectotherm of equivalent mass. 3.Urine leaves the collecting duct and travels to the ureter. 4.Fever is part of humoral immunity since the temperature of the body is controlled from the bone marrow. 5.A doctor who attempts to induce a fever in a patient might be trying to help fight a pathogen or a cancer.
Information from the right visual field is ____
a. carried into the thalamus by the optic chiasm b. detected by both eyes c. sent directly to the visual cortex d. processed by the right visual cortex e. carried by the left optic nerve