What is the major force that drives a growing root through the soil?
a) cell elongation from the tip of the root cap
b) cell Phylum in the root meristem
c) cell elongation behind the root meristem
d) differentiation of xylem cells in the root meristem
e) branch root formation
Answer: c) cell elongation behind the root meristem
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Complementary nucleic acid hybridization, which is coupled with nucleic acid replication and applied repeatedly through numerous cycles, is based on which of the following methods?
a. Hybridization b. Sequencing c. Amplification (PCR) d. Genotypic
What organ is stimulated by insulin, released by the pancreas, to convert glucose into glycogen?
A) stomach B) gallbladder C) liver D) brain
You have found a new prokaryote. What line of evidence would support your hypothesis that the organism is a cyanobacterium?
A) It is able to form colonies and produce oxygen. B) It is an endosymbiont. C) It forms chains called mycelia. D) It lacks cell walls.
How are viruses used in gene therapy?
A.) to attack the immune system B.) to carry new genes into cells C.) to infect disease-causing bacteria D.) to kill cancer cells that have "suicide genes"