What property of phospholipids allows them to form cell membranes? What will be an ideal response?
Phospholipids have both hydrophilic and hydrophobic components. The hydrophilic phosphate end
interacts well with the watery environment outside and inside the cell, while the hydrophobic fatty acid
tails form the middle of the phospholipid bilayer.
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Decreases in CO2 concentration result in ____
a. faster breathing b. deeper breathing c. faster and deeper breathing d. slower and more shallow breathing e. slower breathing
Once commercial whaling stopped, whale populations quickly returned to their pre-whaling sizes
Indicate whether the statement is true or false
Bordetella pertussis is an example of which group of organisms?
A) Cytophaga-Flavobacterium-Bacteroides B) high G+C bacteria C) Proteobacteria D) spirochetes
Which of the following is present during meiosis but not mitosis?
A) a chromatid B) a centromere C) a spindle D) a tetrad E) sister chromatids