Why are agricultural GMOs developed?
What will be an ideal response?
To improve the quality of crops
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How can freeze-fracture be used to determine the orientation of a protein in a membrane?
A. Freeze-fracture allows a cell to be cleaved in between the lipid bilayer, splitting the plasma membrane into two layers. B. Freeze-fracture allows a cell to be cleaved in such a way as to preserve the embedded proteins. C. Freeze-fracture cuts the membrane in protein-sized components for viewing under an electron microscope.
You have discovered a new bacterial strain that causes urinary tract infections. Closely related bacterial species cannot cause infections. You compare the strains and find that your new strain has structures composed of protein external to its cell wall
What structures might your new strain have that the other strains do not? Why? What will be an ideal response?
Which of the following microbes can oxidize ferrous iron while using chlorate or perchlorate as the electron acceptor?
A. Thiobacillus ferrooxidans B. Ferribacterium limneticum C. Dechlorosoma suillum D. Pseudomonas denitrificans
The type of adhesive junction that connects epithelial cells to the basal lamina is a
A) hemidesmosome. B) desmosome. C) gap junction. D) tight junction. E) focal contact.