Shawn's mother and Heather's mother are sisters. Shawn and Heather have ________ of their genes in common.
A) 1/2
B) 1/4
C) 1/8
D) 1/16
C) 1/8
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Which of the following is not an accurate description of events leading to the lytic pathway following viral infection in a bacterium?
A. Upon infection, the linear bacteriophage DNA forms a circle and transcription is initiated from promoters PL and PR. B. The transcripts from PR encode the proteins cro and cII. C. The cro protein represses transcription from PM so that the cl protein is not transcribed. D. Strong protease activity rapidly degrades cII, and cro continues to repress cI expression, leading to the lytic path. E. Reduced protease activity due to poor conditions allows cII to accumulate, which then stimulates transcription from PE and thus expression of cI.
Why are mitochondria so prevalent in skeletal muscle?
A) They give the muscle enough elasticity to contract. B) They are needed to repair damaged tissue that accumulates during exercise. C) They are needed to provide energy for muscle contraction. D) Bones and muscles require a great deal of energy to prevent them from separating. E) The flow of blood is greatest in skeletal muscle.
Localization economies are cost savings that a firm achieves by
A) using local rather imported than labor. B) clustering with other similar firms. C) locating in rural areas. D) locating in multiple areas. E) avoiding globalization.
B has been HIV positive for several years. Recently, B began to experience some disturbing symptoms. B has begun to have problems with vision and motor control. Clinical tests indicate B's immune function is declining. What other viruses besides HIV might be causing B's problems? How might this be verified?
What will be an ideal response?