Exam 3: Cell Structure and Function

Mutations are permanent alterations in which of the following?

The cellular organelle responsible for removing and recycling damaged or denatured proteins is called the

What is the function of the structure labeled #12?

Identify the phase of mitosis,which ends when daughter chromosomes move to the centrioles at opposite poles of the cell.

Synthesis of most ATP takes place in the

Shortly following DNA replication is a brief

Opening a bottle of perfume releases perfume molecules from the container,and within a few minutes the perfume can be smelled by a person many feet away from the bottle.This illustrates

During which phase of cell division do the chromatids line up along the equator of the cell?

Paired structures made of microtubules that are perpendicular to each other are called the

Which of the following functions in the synthesis of secretory products,as well as intracellular storage and transport?

A cell must expend energy to accomplish substance movement during

Which process occurs during telophase?

Which property of a membrane determines which molecules may enter or leave?

The type of RNA that holds an initial copy of the genetic information is the

Flu viruses enter into a prospective host cell (along the respiratory tract)and direct it to produce many copies of the viruses.As those viruses bud off of the infected cell,they take the cell membrane of the host cell with them.How might this kill the host cell?

The chemical cochicine,from a flowering plant,blocks the building of tubulin proteins into microtubules.This would cause cell damage by

The stage of the cell cycle during which DNA replication and synthesis of histones occur is called

Translation takes place on the

Which of the following is true of the sodium-potassium exchange pump?

Examination of a sample of cells reveals large numbers of mitochondria compared to most other cells.Which of the following is a likely reason for this?