Metaphase
What will be an ideal response?
Chromosomes line up in the middle of the cell.
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The liver is commonly damaged if drugs or other toxins are over consumed. Why? What will be an ideal response?
One way to control herd sizes in national parks is the reintroduction of predators, but this course is opposed by
A. animal rights activists. B. neighbors and local ranchers. C. wilderness advocates. D. scientists. E. park rangers.
Apes walk on their feet and knuckles. The apes with opposable thumbs have opposable toes.
Answer the following statement true (T) or false (F)
Biologists use the fluid mosaic model to describe membrane structure. Which statements about the fluid mosaic structure of a membrane are correct? Select the three correct statements.
A. Because membranes are fluid, membrane proteins and phospholipids can drift about in the membrane. B. The framework of a membrane is a bilayer of phospholipids with their hydrophilic heads facing the aqueous environment inside and outside of the cell and their hydrophobic tails clustered in the center. C. The diverse proteins found in and attached to membranes perform many important functions. D. The kinky tails of some proteins help keep the membrane fluid by preventing the component molecules from packing solidly together. E. Membranes include a mosaic, or mix, of carbohydrates embedded in a phospholipid bilayer.