Using a Macrophage‐like Cell Line, Researchers Infected One Set of Petri

question 19

Multiple Choice

Using a macrophage‐like cell line, researchers infected one set of petri dishes with wild‐type Listeria, and, as anegative control, infected another set with a Listeria mutant that was unable to enter cells. At specific time points, the cells were fixed and prepared for electron microscopy. Two hours after infection, they observed that the wild‐type Listeria in the cytoplasmwere surrounded by ______________.

• A)a cloud of tubulin
• B)a cloud of actin
• C)a cloud of keratin
• D)agrowth cone
• E)comet tails of actin filaments

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Definitions:

Demand Function

An equation showing the relationship between the quantity of a good consumers want to buy and its price, alongside other factors like income and prices of related goods.

Buick Owner's Demand

The specific preferences and buying patterns of individuals who own or are interested in purchasing Buick vehicles.

Gasoline

A volatile, flammable liquid derived from petroleum, used primarily as fuel in internal combustion engines.

Gas Pump

A gas pump is a machine at a filling station that is used to transfer gasoline from a reservoir to a vehicle's fuel tank.