Leprosy is caused by a microbe of the genus ________.
A. Mycobacterium
B. Streptococcus
C. Chlamydia
D. Staphylococcus
Answer: A
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Which set of codons terminate transcription in most organisms?
A. ACT, TAC, ATT B. AGU, UAG, UAA C. TGA, TAG, TAA D. UGA, UAG, UAA
Because of the complexity of the Schistosoma life cycle, there are several parts of the cycle that could be disrupted to halt the spread of the disease. Which of the following proposals is not likely to succeed in decreasing the prevalence of schistosomiasis?
A. Install sanitary sewage treatment facilities to prevent the dispersal of eggs present in urine and feces. B. Apply chemical molluscicides (chemicals targeted to molluscs like snails) to bodies of fresh water. C. Identify a surface protein on Schistosoma miracidia that the immune system can recognize and create a vaccine using that antigen. D. Monitor water bodies to detect the presence of infectious miracidia and enforce no bathing rules when they are present.
Which of the following is not one of the four main functions of the stem of a plant?
1.containing meristematic tissue that gives rise to new cells of the shoot 2.housing the vascular tissues 3.mechanical support 4.photosynthesis
The range of physical and chemical conditions under which each species can persist (survive and reproduce) and the array of essential resources it utilizes are referred to as its ecological ________
Fill in the blank(s) with correct word