Which organelle makes most of the lipids that
form the cell’s membranes?
a. rough ER
b. smooth ER
c. Golgi body
d. peroxisomes
e. mitochondria
B
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Changes in gene expression that are not the result of changes to the gene itself are known as ________ changes.
Fill in the blank(s) with the appropriate word(s).
Once the initial case has occurred, Legionnaires' disease spreads as a propagated epidemic.
Answer the following statement true (T) or false (F)
How does cell volume affect nutrient exchange between the cell and its external environment?
a. Very large cells are the best adapted for nutrient exchange. b. Very small cells are the best adapted for nutrient exchange. c. Nutrient exchange is not impacted by cell volume. d. The ratio of cell volume to surface area determines the efficiency of nutrient exchange. e. Cells with a large volume and small surface area are well-adapted for nutrient exchange.
What evolutionary advantage is provided by sexual reproduction?
a. increased genetic diversity b. making clones c. making diploidy possible d. making polyploidy possible e. being able to work with chromosomes