Which of the following is a potential response by a plant host to a parasite?
A) formation of a gall
B) allelopathy
C) increased production of lymphocytes
D) more rapid growth of tissues
A
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You are talking to a 54-year-old patient who has joint pain. As the attending physician, you order a scan to look at the cartilage in the patient's painful joints because you suspect that cartilage has worn away, leading to
A. acromegaly. B. rheumatoid arthritis. C. scoliosis. D. osteoporosis. E. osteoarthritis.
Matching II. Choose the one most appropriate
answer for each. 1. ___ control over enzyme activity 2. ___ transcript processing 3. ___ post-translational control 4. ___ transcriptional control 5. ___ transport control A. influences the amount and kinds of mRNA assembled from structural genes B. snipping out of transcript regions; chemical modification of transcript before it arrives at ribosome control C. nuclear envelope selectively regulates passage of transcripts D. phosphorylation of translated protein E. for example, the interior environmental pH determines whether a protein can act as a cell catalyst
For a donor organ not to be rejected by the recipient:a
the MHC complexes should be compatible. b. the recipient's plasma cells would be inactivated. c. the recipient's passive immunity pathway would be activated. d. the NK cells of the recipient would be inactivated. e. the cytotoxic T cells would be inactivated.
Which of the following is true of both mitochondria and chloroplasts?
A. They include stacks of membranes that absorb light B. They break down sugar to produce ATP C. They produce sugars using energy harvested in the cytoplasm D. They are found in the cells of eukaryotic autotrophs and heterotrophs E. They include compartments where hydrogen ions are concentrated