Which plant compound is involved in systemic acquired resistance and shows potential as a drug for preventing heart disease in humans?
A. Curcumin
B. Strigolactone
C. Resveratrol
D. Caffeine
E. Epicatechin
Answer: E
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Viruses are generally measured in
A. nanometers. B. millimeters. C. micrometers. D. centimeters. E. decimeters.
Which of the following statements about plant cell walls is NOT true?
A. The cell wall has three layers: the middle lamella, the primary cell wall, and the secondary cell wall. B. In the late stages of cell division the middle lamella is the first cell wall layer to be formed, serving to attach the daughter cells to each other. C. The primary cell wall is thin and flexible, formed while the cells are still growing. D. The secondary cell wall contains complex components such as lignin that are rigid. E. Like the extracellular matrix formed by animal cells, the cell wall polymers are formed in the cytoplasm and secreted to the outside of the cell.
Acellular vaccines and subunit vaccines
A. are always genetically engineered. B. confer passive immunity. C. contain select antigenic components of a pathogen rather than whole cells or viruses. D. contain modified bacterial exotoxin molecules. E. utilize DNA strands that will produce the antigen.
Which of the following is the site of photosynthesis in cyanobacteria?
A) peroxisomes B) mitochondria C) photosynthetic membranes D) outer walls E) thylakoid lumens