Chloride ions move by ________, following the transport of sodium out of the proximal tubule
Fill in the blank(s) with correct word
passive diffusion or diffusion
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What is the role of the enzyme ligase in DNA replication?
A. It matches new bases to the old strand by complementary base-pairing. B. It folds the DNA into a coiled structure. C. It unzips the double-stranded DNA. D. It seals any breaks in the sugar-phosphate backbone. E. It breaks the hydrogen bonds that hold the two strands of the DNA together.
Give an example of an acute and a chronic carrier of disease. What disease characteristics allow for chronic carriers to play significant roles in the spread of the disease? How are diseases with chronic carriers controlled?
What will be an ideal response?
Worms have no skeletal system or muscular organ sytem.
a. true b. false
Choose the true statements about the human and mouse genomes.
_____ The human genome shares 99% of its genes with the mouse genome. _____ A comparison of genomes confirms that mice and humans shared a common ancestory more recently than humans and pufferfish. _____ Very few genes are conserved in the two genomes. _____ Little rearrangement of genes has occurred in the two genomes.