Exam 5: Cell Structure and Internal Compartments

Nuclear pores allow the nucleus to pass through the plasma membrane.

The _______ is the place where the genetic material of a eukaryotic cell is stored.

Which of the following components make up the cytoskeleton of a cell?

Which of the following statements is true of chloroplasts?

The _______ endoplasmic reticulum is covered with ribosomes.

A microscope is used to obtain a magnified view of an object.

Lysosomes are organelles responsible for the breakdown of macromolecules. Why is it useful to have the lysosome's reactions compartmentalized rather than allowing them to take place freely in the cytoplasm of the cell?

Microtubules are responsible for

The __________includes the entire contents of a cell except for the nucleus.

The hydrophobic portions of a membrane's phospholipid bilayer are oriented toward the interior of the membrane.

Certain _______ in a cell's membrane form channels through which ions and molecules may pass.

A cell you view under a microscope has a cell wall and chromosomes but no nucleus. The cell you are viewing could be a(n)

Chemical reactions occur more efficiently in _____ because their reactants are concentrated within a specialized compartment.

You are looking at a cell under a microscope and trying to determine whether it is a prokaryote or a eukaryote. You know it is a eukaryote if you see

A ribosome has internal cristae.

Which of the following structures in not found in all types of cells?

Prokaryotes and eukaryotes are distinguished mainly by whether internal membrane-bound organelles are present. Are prokaryotes at an evolutionary disadvantage because they do not have organelles?

Which of the following works like a propeller?

Which of the following statements is false?

The ___________ model describes the plasma membrane as a mobile mixture of phospholipids and proteins.