Which of the following is not a part of the mitotic spindle apparatus in plants?
A. centrosome
B. centriole
C. tubulin protein
D. kinetochore microtubules
E. astral microtubules
B. centriole
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Which statement is correct regarding acids and bases?
A. Bases increase the proportion of hydrogen ions (H+), and acids reduce the proportion of H+. B. Acids increase the proportion of oxygen ions (O+), and bases reduce the proportion of O+. C. Bases reduce the proportion of oxygen ions (O+), and acids increase the proportion of H+. D. Acids increase the proportion of hydrogen ions (H+), and bases reduce the proportion of H+.
What is a leaf blade attached to a stem by a stalk-like structure?
A) internode B) stoma C) petiole D) node
Which of the following statements about the two paired nucleotide strands of the DNA double helix are correct?
A: The nucleotides that make up one strand of the molecule are joined by hydrogen bonds. B: A-T basepairs have the same width as G-C basepairs. C: The G on one strand forms 3 hydrogen bonds with the C on the complementary strand. D: It is thermodynamically easier to break the bonds between A-T base pairs than between the G-C base pairs. E: A, B and C. F: B, C and D G: C and D
Bioremediation involves the use of microbes to degrade or detoxify pollutants
Indicate whether the statement is true or false