True or False: Plants require a great deal of water because water is consumed in the process of photosynthesis
A. true
B. false
B
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You start to culture a petri dish of marine bacteria. Each day, the number of visible colonies growing on the agar surface increases in this fashion: 2, 4, 16, 32, 64, 128 . This growth pattern is best described as
a. logarithmic. b. logistic. c. exponential. d. quadratic.
In order to activate the cell mediated immune response, which event must occur?
a. A naïve helper T cell must bind to an antigen-presenting dendritic cell.
b. A naïve B cell must be activated in order to activate the effector helper T cell. c. A free bacterium must pass through a lymph node where it will directly activate the effector helper T cell. d. A damaged or infected body cell must pass through a lymph node in order to activate T cells. e. Antibodies must bind to naïve helper T cells.
The solvent, cohesive, and temperature
stabilization properties of water are due to its a. ability to promote hydrophilic interactions. b. ionic bonds. c. hydrogen bonds. d. ability to promote hydrophobic interactions. e. nonpolar nature.
The ends of chromosomes are called ________.
A. caps B. telomeres C. centromeres D. DNA termini