Which organ system collects and returns some tissue fluid to the bloodstream and defends the body against infection and tissue damage?
1.Circulatory system
2.Endocrine System
3.Lymph system
4.Urinary system
3
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Which of the following is not an example of euploidy?
A. Tetraploid B. Polyploid C. Triploid D. Diploid E. Aneuploid
A molecular biologist is interested in purifying a recombinant protein by His-tagging, but the protein and vector both lack histidine residues. In this case, the molecular biologist could use which of the following technique(s) to achieve purification?
A. Add a 6xHis-tag to the C-terminus of the protein B. Amplify the histidine-encoding sequence by PCR and add it to the gene of interest C. Add a series of histidine residues to the N-terminus of the protein D. All of the choices are correct.
Triglyceride (fat) storage
What will be an ideal response?
Which class is composed mostly of freshwater parasites called leeches?
a. Hirudinea b. Oligochaeta c. Cestoda d. Polychaeta