The chromosomal structure that anchors the spindle fiber to the chromosome is
____________________. What will be an ideal response?
ANS: the centromere
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In lineages that moved onto land, gills were replaced by lungs; kidneys became better at conserving
__________, and the circulatory system became more efficient. Fill in the blank(s) with the appropriate word(s).
Answer the following questions true (T) or false (F)
1. The structure of DNA allows the molecule to replicate itself. 2. The structure of DNA allows repair of simple damage. 3. DNA polymerase cannot copy point mutations, so they are not passed on from parent cells to daughter cells in cell division.
When you hold your breath, which of the following leads to the urge to breathe?
a. Falling blood O2 concentration b. Falling blood CO2 concentration c. Rising blood CO2 concentration d. Rising blood CO2 concentration and falling pH e. Rising blood pH
Should any additional tests be performed on organisms identified using HardyCHROM chromogenic media?
> Yes, biochemical tests should be performed on colonies from pure cultures for complete identification for organisms other than E. coli and Enterococcus spp. > Yes, biochemical tests should be performed on ALL colonies from pure cultures for complete identification. > No additional tests are necessary