What is hypertonic
What will be an ideal response?
Answer: A solution with a higher salt concentration than in the cell
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Which of the following is not part of the P1 lytic cycle?
A. The DNAs are cut from the linear product of rolling circle replication, circularized, and then packaged into phage heads. B. When P1 DNA enters the cell, it circularizes its genomes using the Cre-lox recombination system. C. Rolling circle replication occurs, generating many copies of the phage genome as a long linear DNA. D. The cells lyse and the mature phages can infect other cells. E. All of the choices given are part of the lytic cycle.
Early on, researchers suspected that Dolly was
physically older than her chronological age because of the results from a study of her a. telomeres. b. blood. c. egg cells. d. brain tissue. e. teeth.
Based on the data in the table, this population has a(n) ________ growth pattern
Time (years) Number of organisms 1998 200 2000 15 2002 175 2004 30 2006 215 A) exponential B) boom-and-bust C) S-curve D) J-curve E) scramble competition
One main reason kidneys filter the blood is to dispose of
A. excess water. B. toxic levels of glucose. C. excessive calories in the body. D. toxic nitrogen-containing by-products of protein metabolism.