An element is
a. a pure substance that can be broken down
to another substance.
d. an atom with an unstable nucleus.
b. a pure substance that cannot be broken
down to another substance.
e. an atom with positive electrons.
c. the smallest unit that has properties of a
given element.
B
You might also like to view...
Which statement is least consistent with the beliefs of Lamarck?
a. “Fluida” moves into areas of the body in need of change. b. Acquired characteristics are inherited. c. Giraffes' necks have become longer in response to stretching. d. Environmental pressures bring about changes in organisms. e. Changes in an individual are not passed to its offspring.
Explain what genetic ‘trick’ could have confounded Mendel is his recognition of segregation? What will be an ideal response?
Which of the following is NOT true regarding an
incomplete digestive system? a. Food enters a saclike gut. b. Food and wastes pass through the same opening. c. Food is only partially digested in this system; therefore, fecal material is good fertilizer. d. This system favors regional specialization. e. There is two-way traffic of materials in this system.
During prophase I of meiosis, homologous chromosomes lie side by side. This phenomeon is knownas:a
chromatid pairing. b. divalent formation. c. tetrad formation. d. paternal pairing. e. parental pairing.