Which of the following pairs of organisms excrete nitrogenous wastes in the form of uric acid?
A) mice and birds
B) insects and birds
C) lions and horses
D) humans and frogs
E) fish and turtles
Answer: B
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Which of the following is an example of diffusion?
A. movement of individual oxygen molecules from the air to the bloodstream B. movement of large numbers of air molecules into and out of the lungs C. transport of oxygen throughout the body via the circulatory system D. binding of oxygen to hemoglobin within the red blood cells E. movement of oxygen molecules from the lungs to the bloodstream AND movement of large numbers of air molecules into and out of the lungs
Which of the following statements is correct regarding rubella?
A. It is not preventable by a vaccine. B. It is caused by the measles virus (Morbillivirus). C. It is associated with congenital transmission causing miscarriage, deafness, and cardiac and mental defects in the infant. D. It manifests as high fever, severe sore throat, severe cough, and myalgia.
Paired homologous chromosomes are found at the spindle equator during ____
a. metaphase I b. telophase I c. prophase II d. metaphase II e. anaphase II
Which of the following explains the events occurring when water boils?
a. Hydrogen bonds are broken between neighboring water molecules. b. Covalent bonds are broken between oxygen and hydrogen atoms. c. Ionic bonds are broken when the minerals in water are heated. d. The bond between one water molecule and another is strengthened. e. The hydrogen atoms break away from the oxygen and escape as vapor.