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.
A
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Match the following names with the correct statements.
_______1. This German scientist proposed the theory of biogenesis—that life can arise only from preexisting life. _______2. This Dutchman built single lens microscopes as a hobby and is believed to be the first person to see live bacteria and protozoa. _______3. This German physician developed a step-by-step scientific method to prove that a particular microorganism causes a particular disease and contributed to what is known as “the germ theory of disease.” _______4. This French scientist discovered that microorganisms are responsible for fermentations, contributed to disproving abiogenesis, and contributed to what is known as “the germ theory of disease.” a. Robert Koch b. Louis Pasteur c. Rudolf Virchow d. Antony van Leeuwenhoek
During which phase of the bacterial growth curve does a bacterial population become much more resistant to harmful conditions?
A. Lag phase B. Exponential phase C. Stationary phase D. Late log phase
Discuss the functions of the large intestine
What will be an ideal response?
One technique for chromosome analysis is called ____________________, which uses chromosome-specific DNA
sequences attached to fluorescent dyes to target specific chromosomal regionsFill in the blank(s) with the appropriate word(s).