The mass of a substance divided by its volume is:
a. heat capacity.
b. surface tension.
c. density.
d. salinity.
e. viscosity.
C
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A frameshift mutation could result from _____
A) a base insertion only B) a base deletion only C) a base substitution only D) deletion of three consecutive bases E) either an insertion or a deletion of a base
The electronegativity of nitrogen (N) is 3.0, while the electronegativity of hydrogen (H) is 2.1. Knowing this, consider how the electrons will be shared in ammonia (NH3 ). What do you predict about the polarity of ammonia?
A. Each H atom has a partial positive charge B. The N atom has a partial positive charge C. Each H atom has a partial negative charge D. The N atom has a strong positive charge
At higher altitudes:a
the concentration of oxygen decreases. b. the concentration of carbon dioxide increases. c. the partial pressure of oxygen decreases. d. the partial pressure of carbon dioxide increases. e. there is no change in the concentration or partial pressures of atmospheric gases.
Which of the following is an adaptation to increase the surface area of a part of a cell that is involved in cellular respiration?
A) the cristae of a mitochondrion B) the outer membrane of a chloroplast C) the grana of a chloroplast D) the endoplasmic reticulum