Which of the following are not part of plant defense systems for pathogens?
A. Protein receptors detect a broad class of
molecules produced by many pathogens and
mount defense mechanisms.
B. R proteins inside the plant cells recognize
AVR proteins on pathogens.
C. Plants reinforce barriers, such as by
closing stomata and reinforcing cell walls.
D. Cells surrounding the infection site
produce reactive oxygen species.
E. Plants produce AVR proteins when
invaded by a pathogen.
E
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Cells that crawl rely mainly on ___________________ to facilitate their movement
A. microtubules B. microfilaments C. intermediate filaments
Where in the cell are the receptor proteins located on the postsynaptic cell synthesized?
A. the Golgi apparatus B. the cytoplasm C. the rough endoplasmic reticulum D. the lysosome
An internal checkpoint can be found where?
a. between the S phase and the G2 phase b. at the end of cytokinesis c. near the end of the G1 phase d. after prophase
Liz has two sons and two daughters, and she is heterozygous for hemophilia, an X-linked condition. Which of the following will likely occur?
a. Liz will pass the disease to both sons. b. Liz will pass carrier status to one daughter. c. Both of Liz’s daughters will be hemophiliacs. d. All four of Liz’s children will have carrier status.