Depletion of carbon and nitrogen initiate endospore formation in Bacillus, Clostridium, and Sporosarcina.
A) True
B) False
A) True
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The quick response of the immune system to a second infection is due to the _____, a feature of the immune system as demonstrated by the success of vaccines
a. activation of macrophage cells b. suppression of suppressor cells c. T and B memory cells d. high levels of antigen e. new cytotoxic T cell.
Binding of _____ to _____ in DNA can increase the rate of transcription of specific genes
a. activators; promoters b. activators; enhancers c. repressors; operators d. both activators; promoters and activators; enhancers
_____ cut(s) DNA molecules at specific sites
a. DNA polymerase b. DNA probes c. Restriction enzymes d. Reverse transcriptase
Which of these statements about hypertension is true?
A. Blood pressure is less than 120/80. B. Poor diet and lack of regular exercise puts one at increased risk. C. Sickle-cell anemia often accompanies this condition. D. Most Americans with the condition seek treatment. E. Atherosclerosis is another name for this condition.